, QL A. §, Barber, U.S. National Museum, Washington, D. C, Paes v York StateMuseum Bulletin 8 second-class matter November 27, r915, at the Post Office at Albany, New York, the act of August 24, 1912. Acceptance for mailing at special rate of postage wided for in section 1103, act of October 3, 1917, authorized July 19, 1918. ublished monthly by The University of the State of New York Nos. 231-232 ALBANY, N. Y. March-April 1920 The University of the State of New York | _ New York State Museum’ Joun M. Crarke, Director EPHRAIM PorTER FELT, State Entomologist « 34th REPORT OF THE STATE ENTOMOLOGIST ON INJURIOUS AND OTHER INSECTS OF THE STATE OF NEW YORK 1918 PAGE PAGE SMESIMOCUCHION. .. 2.05.6. ...c0ec cece 7 Corn and grass insects ...... vo Oe Mapasiows ISects../.).2..-.....-% 17 Miscellaneous.....2. «> 0sae pe beaten ene Mote. ek eo 17 | Publications of the Entomologist .. 70 European corn borer........... 26 | Additions to collections....... Be MU MERE IMIETS ...025...2..0-.¢ -. 35 | Appendix: A Study of Gall Midges, Wiates for the year... ..... 26. ke. 54 VIT aga tena geen o 6 caw Sea £508 PRRUDMTIGOCTS clos cae’ s i cee 54 | Explanation of plates.......... - 2A Margen PUSCCES. oe ce ese ee es 58) bk Index 08 Bee Rec er ee ALBANY THE UNIVERSITY OF THE STATE OF NEW YORK 1921 Mrs6r-D20-1400 THE UNIVERSITY OF THE STATE OF NEW YORK Regents of the University With years when terms expire Revised to November 15, 1921 1926 Puiny T. Sexton LL.B., LL.D., Chartcellor Emeritus - - - - - - Palmyra 1922 CHESTER 9. LorD M. ie Bi D., Caer - - Brooklyn 1924 ADELBERT Moot LLD: Vice Cre, ~ - Buffalo 1927 ALBERT VANDER VEER M.D.,M.A.,Ph.D.,LL.D. Albany 1925 CHARLES B. ALEXANDER M.A., LL.B., LL.D., Patt Dae - - - Tuxedo 1928 WALTER GUEST Eeieoee B. ‘s ie D. - - - Ogdensburg 1932 JAMES Byrne B.A., LL.B., cies - - - - - New York 1929 HERBERT L. BripcMaNn M.A., LL.D. - - -_ -. Brooklyn 1931 THomas J. Mancan M.A. - - - - - - - Binghamton. 1933 WiLitiaM J. Waitin M.A. - - - - - - Yonkers 1923 WILLIAM Bonpy M.A., LL.B., Ph. D. - - - New York 1930 WiLuiaM P. Baker B. i itt Deo 8 - - Syracuse President of the University and Commissioner of Education FRANK P. Graves Ph.D., Litt.D., L.H.D., LL.D. Deputy Commissioner and Counsel FRANK B. GiLBertT B.A., LL.D. Assistant Commissioner and Director of Professional Education Aucustus S. Downine ‘M.A., Pd.D., L.H.D., LU.D: Assistant Commissioner for Secondary Education CHARLES F. WHEELOCK Bis.; Pd.D; LED: Assistant Commissioner for Elementary Education Georce M. Witey M.A., Pd.D., LL.D. Director of State Library James I. WyerR M.L.S., Pd.D. Director of Science and State Museum Joun M. Crarke D.Sc., LL.D. Chiefs and Directors of Divisions Administration, Hrram C. CasE Archives and History, James SuLLIVAN M.A., Ph.D. Attendance, JAMES D. SULLIVAN Examinations and Inspections, Avery W. SKINNER B.A. Law, Franx B. Givpert B.A., LL.D., Counsel Library Extension, WILLIAM R. Watson B.S. Library School, Epna M. SanpErsoN B.A., B.L.S. School Buildings and Grounds, Frank H. Woop M.A. School Libraries, SHERMAN WILLIAMS Pd.D. Visual Instruction, ALFRED W. ABRAMS Ph.B. Vocational and Extension Education, Lewis A. WILSON Errata Page 29, line 14 for figure 5 read plate 6. Page 99, third line of legend for figure 9, for Caryze read C. carye. Page 237, tigure 54 b, the figure is reversed. Plate 17, the upper and lower figures should be transposed. a if a WAM NTNT IT MND bt inn nt Joy AAP i ; aN i} HM xi I Hi Na netihy i hi) i f nh) i : ah Tie Ay ali r ie a LW Aa i} H a i ue i petit as mi Ht The University of the State of New York State Museum, September 3, 1920 Dr John H. Finley President of the University SIR: I have the honor to communicate herewith and to recommend for publication as a bulletin of the State Museum, the annual report of the State Entomologist for the year 1918. Very respectfully yours Joun M. CLaRKE Director Approved for publication, ——— ESS President of the University (ORs iad New York State Museum Bulletin Entered as second-class matter November 2 7, 1915, at the Post Office at Albany, N. Y.> ender the act of August 24, 1912. Acceptance for mailing at special rate af hauteize provided for in section 1103, act of October 3, 1917, authorized July 19, 1918. Published monthly by The University of the State of New York Nos. 231, 232 ALBANY, N. Y. MARCH-APRIL 1920 OS Sn ee SS The University of the State of New York New York State Museum Joun M. Crarke, Director EPnRAIM PorTER FELT, State Entomologist THIRTY-FOURTH REPORT OF THE STATE ENTOMOLOGIST 1918 Dr John M. Clarke, Director of the State Museum I have the honor to present herewith my report on the injurious and other insects of the State of New York for the year ending September 320, TOL. The season of 1918 has presented many features in common with the abnormal spring andsummer of 1917. Therainfallin the western part of the State was not so great as last year and the injury then so generally attributed to the seed corn maggot was much less preva- lent, and limited very largely to the wetter ground. The develop- ments of both last year and this have shown that the seed corn maggot problem is largely a question of methods, the depth of planting and drainage being the more important factors and the insect injury largely a consequence of unfavorable conditions. The apple tent caterpillar was notable for its absence in most sec- tions of the State, particularly in portions of Dutchess county. The late leaf feeders, such as the red-humped apple worm and the yellow-necked apple worm were, as last year, exceptionally abun- dant, and there has been even more severe damage in Rensselaer and Columbia counties in particular. The fall webworm, the hickory tussock moth caterpillar and some related species were also uncom- monly numerous and destructive. Fruit tree insects. Reports from areas’ infested by the recently established apple and thorn skeletonizer indicate a moderate abun_ [7] 8 NEW YORK STATE MUSEUM dance of the insect with some extension of theinfested territory. It is now known to occur from Yonkers north to Yorktown Heights and it appears to be somewhat generally distributed in Nyack. Codling moth. Field studies of the codling moth were continued in cooperation with the bureau of horticulture of the State Depart- ment of Farms and Markets. Evening temperature records were kept by George W. Mead, living 3 miles west of Barker and about 2 miles from Lake Ontario, and E. E. Crosby, residing 4 miles south- east of Lockport and located on the Erie plain about 14 miles from the lake. Interesting variations between these two localities were found to exist and as evening temperatures greatly influence the deposition of codling moth eggs, these data have a practical bearing and serve to explain some apparent inconsistencies in the abundance of the pest in various orchards. The observations on deposition of eggs in different parts of Erie county by L. F. Strickland, inspector of the Department of Farms and Markets, show an interesting cor- relation between high evening temperatures and oviposition by this very injurious insect. Field tests were also conducted to determine the possibility of destroying the moths before they laid their eggs by spraying the trees thoroughly with a nicotine preparation, other insecticides being simply incidental to the main purpose. Work of this kind was con- ducted on the farm of L. L. Morrell, Kinderhook, and that of R. E. Heard, Lockport. The spraying on the latter farm was under the supervision of Mr Strickland and a canvass of the results shows a decided improvement following the application. The data amply warrant the continuation of work along this line. The series of experiments to determine the relative efficiency of the several sprays for control of codling moth have been continued in the western part of the State and the data in relation thereto are given in a general discussion of the codling moth work. Apple maggot. It was not possible to continue the field work with this insect, though it happens that the orchard sprayed with poison late last year was gratifyingly free from injury last summer. There was no spraying the past season and the fruit was very severely damaged. This alone suggests that a late application of poison at the time the flies are issuing is the most promising method of controlling the pest, particularly since similar results have been obtained by other workers. White-marked tussock moth. The past season has been note- worthy because of the unusual abundance of the caterpillars in orchards and the consequent general and rather serious damage to REPORT OF THE STATE ENTOMOLOGIST 1918 9 the fruit. It was this insect rather than the leaf roller which injured most of the apples in many localities. Red bugs. Injuries by red bugs are becoming increasingly abundant here and there in the State. Fruit growers suffer consider- able losses from these pests and frequently secure only indifferent results in control work due to variations in the time of hatching of the bugs and the further fact that spraying, in order to give the best - results, must be done while the bugs are small and their work rela- tively inconspicuous. San José scale. This serious pest of earlier years has attracted comparatively little attention the past two seasons. Spraying with lime sulphur wash at winter strength has uniformly resulted in satis- factory control and in not a few localities there has been but little breeding even in unsprayed orchards. The wet, cold weather of early summer has probably had an important influence on the develop- ment of this insect, and largely checked its breeding, though para- sites doubtless have rendered material assistance in controlling the scale. Pear thrips. This minute and destructive pest is sporadically abundant here and there in the pear-growing sections, specially in the Hudson valley, and despite the watchfulness of fruit growers there is likely to be considerable loss before the seriousness of the infestation is appreciated or the need of immediate action realized. Pear psylla. There have been some reports of injury by pear psylla though in many localities the insect has been only moderately abundant and in not a few almost absent. The cool weather and heavy rains have had a marked influence in preventing the pest from multiplying greatly. Grass and grain pests. The cool weather and abundant rains of last spring, as in 1917, were unfavorable to the development of sufficient grasshoppers to cause serious damage and in most sections these insects were not unusually abundant though toward the end of the season they were somewhat numerous in restricted localities. The white grub injury rendered probable by the abundance of May and June beetles in 1917 failed to develop in most localities. There was material injury in restricted areas though this was hardly comparable to that of 1915. Warning notices outlining probabilities were issued in early spring and it is very probable that in many localities the comparative freedom from damage was due to farmers taking precautions and not planting crops liable to injury, such as corn and potatoes, on land where conditions favored an abundance of white grubs. 10 NEW YORK STATE MUSEUM Wheat midge was prevalent in the rye fields of the eastern part of the State and caused somewhat more damage thanin 1917. The wheat fields of the western section were also generally infested by this insect. A survey of the situation in Erie, Genesee, Niagara and Orleans counties disclosed a general prevalence of the insect practically without reference to time of sowing, depth of plowing or previous treatment, though it was noteworthy that, generally speaking, the more vigorous fields showed less of the pest. The bearded wheats are usually lessinfested. The results of these studies are summarized in the body of the report. Grass lands, specially pastures and corn fields, were seriously injured in Broome county localities by grass webworms, the asso- ciated bronze-colored cutworm and also the greasy cutworm. There were complaints of serious injury to corn by webworms and damage by the lined corn borer was also reported. Investigation by the Entomologist of the European corn Dees shows it to be very destructive in eastern Massachusetts. The occur- rence of the pest in this state means possibly great losses unless there is early and effective control. Potentially it is a serious enemy of corn and other important crops. It is extremely desirable to prevent its spread. The history of other pests in this country suggests that actual extermination, though costly, would be true economy. There should be at least a determined effort to accomp- lish this through federal and state agencies. Field crops. There was some injury to beans by the seed corn maggot. This was much less than in 1917 in spite of the fact that there was considerable wet weather. The comparative immunity was due largely to modifications in methods, care being taken not to put beans on wet land, and if this was necessary, shallow rather than deep planting seemed to be the rule. Potato aphis appeared toward the end of June on Long Island and later developed in the Hudson valley and was reported from the central part of the State. The history of the attack was very similar to that of 1917. The damage was markedly less, because the farmers more generally appreciated the status of the pest and were ready to adopt control measures whenever conditions justified them. Black flea-beetles were unusually abundant and injurious on Long Island, in the Hudson valley and in some other sections of the State, the damage being limited mostly to potato and tomato plants recently transplanted. The probabilities are that poor culture the preceding year, due presumably to scarcity of labor, was a factor in producing conditions favorable to injury by this pest. REPORT OF THE STATE ENTOMOLOGIST 1918 If Similar conditions, possibly more accentuated, may be expected another season. Forest tree pests. There has been comparatively little damage by insects to forest trees though there was some stripping of woodlands in the Catskills by caterpillars of the snow-white linden moth. The antlered maple caterpillar defoliated extensive areas in the nearby Berkshires and was reported from one New York locality. The fall, as in 1917, was characterized by an unusual abundance of hickory tussock moth caterpillars and associated species, though the damage does not appear to have been so extensive. Insects and health. The necessity of controlling flies and other insects frequenting human habitations has been greatly emphasized by the extensive mobilization of troops. This was anticipated by the Entomologist in the preparation of Household and Camp Insects (Museum Bulletin 194), which appeared in February 1917. The publication was widely distributed among military officers as well as to those specially interested in work of this kind throughout the country. There has beena constant demand for the bulletin through- out the season. The importance of insect control in camp and field is apparent when it is recalled that diseases have been responsible for more deaths in armies during war times than are caused by wounds and that such infections as typhus, cholera, malaria of various types, trench fever and typhoid fever may be carried by insects and some of the more important of these infections are disseminated only by such agents. It therefore follows that the application of precise knowledge regarding the habits of insects to the extremely varied conditions encountered by an army in the field and particularly an appreciation of the benefits resulting from the avoidance or ameli- oration of conditions favorable to the reproduction of dangerous insects, means an enormous advantage to the units in a position to utilize such knowledge. The broader phases of insect control and sanitation were discussed by the entomologists at the Pittsburgh meeting of the American Association of Economic Entomologists and as an outcome a special committee, of which the State Entomologist was a member, was appointed for the purpose of promoting the better utilization of the entomological talent of the country in army sanitation. ‘There have been several conferences with representatives of the surgeon general and a number of entomologists are now demonstrating the utility of their calling as active members of sanitary corps. Fur- thermore, the Entomologist, upon the invitation of the camp surgeon, IZ NEW YORK STATE MUSEUM made an examination of conditions at Camp Upton with special reference to the complex mosquito problem of that section. Another very important phase deserves consideration at this time, namely, the desirability of adopting every reasonable pre- caution to prevent epidemics after the establishment of peace. Various infections have been widely distributed as a result of the wholesale movement and dissemination of troops and with entire nations suffering from malnutrition, conditions will be almost ideal for extensive epidemics when warm weather permits insects to become active carriers of disease. The peril is greatest in portions of Europe though sections to which troops return will by no means be free from danger. Doctor Prinzing, in his monograph on ‘“‘ Epidemics Resulting from Wars,’ states that, ‘‘ Until comparatively recent times the most serious human cost of war has not been losses in the field, nor even the losses from disease in the armies, but the losses from epidemics disseminated among the civil populations. It was the war epidemics and their sequelae, rather than direct military losses that accounted for the deep prostration of Germany after the Thirty Years’ War. Such epidemics were also the gravest conse- quence of the Napoleonic Wars.’’ Wasted resources and reduced man power in certain European countries mean arelaxation of sani- tary precautions and with the renewed activities of insects another season, there will be almost unexampled opportunities for the spread of disease unless precautions are adopted and rigidly enforced at the very outset. Special entomological service. The plan was to promote the production of larger and better crops and was a development from and continuation of the insect pest survey and information service conducted during the summer of 1917. It is emergency war work. A series of weekly reports or digests were issued throughout the active part of the season, the first appearing May 23d and the last August rst. These were distributed to farm bureau agents through- out the State and to a number of specially interested persons, par- ticularly those in position to influence the adoption of better measures for the control of insect pests. This was supplemented by cor- respondence directing the attention of observers to features of special importance. The service was possible only through the cooperation of the farm bureau agents and a number of observers in various parts of the State, the latter mostly earlier correspondents of the office. In addition to the weekly reports mentioned above, special circulars were issued warning of probable injury by grass webworm, potato REPORT OF THE STATE ENTOMOLOGIST 1918 13 aphis, summer leaf feeders and the wheat midge and recording the most recent developments. The main purpose of the undertaking was to secure early and accu- rate reports of insect activities from all over the State, to summarize the information thus obtained, distribute it promptly, and thus effect material reduction in the serious losses annually inflicted by these pests. Particular emphasis was laid upon the initial signs of injury in order to promote control before much damage had been caused. The more important crops received first attention, specially the insect enemies of potatoes, such fruits as apples, pears, peaches and cherries, cereal and forage crops and truck and garden crops. It is impossible, from the nature of the case, to give exact figures as to the value of the service. The mere fact that a close watch was kept for such injury is worth much in times when every effort should be made to increase production. An estimate made in 1913 placed the approximate damage in this State to all farm crops at $20,000, ooo annually. The figures should be considerably higher now. Fur- thermore there is need of discouraging unwise or misdirected efforts against insects of little importance or the use of materials or methods of doubtful efficiency. The Entomologist has constantly kept these problems in mind and in working through farm bureau agents has been able to do much in standardizing practices and increasing production. The Entomologist has also served as collaborator with the Emer- gency Entomological Service of the United States Bureau of Ento- mology, thus assisting in improving conditions in the country as a whole and at the same time bringing the state work into closer touch with that of the Nation, to the mutual advantage of both. Gall insects. The ‘‘ Key to American Insect Galls’’ has been carried through the press. It is the only comprehensive tabulation of these interesting deformities and since it deals primarily with the more obvious swellings or plant malformations rather than with the minute and highly complex gall makers themselves, it will greatly facilitate the study of the interrelations between plants and insects. There is also brought together and tabulated in this bulletin data which are of great value in interpreting biological processes and are not without their economic or practical bearing, since a number of species comprised in this large group are pests of prime importance, notably the Hessian fly and the wheat midge, the latter being much more destructive in earlier years than at the present time. Some attention has been given to gall midges and a number of interesting forms, including several new genera, have been described. 14 NEW YORK STATE MUSEUM Lectures. The Entomologist has delivered a number of lectures on insects, mostly economic species, before various agricultural and horticultural gatherings, some of these being in cooperation with farmers institutes or county farm bureau agents. Several lectures have also been given under the auspices of local welfare associations. Publications. Brief popular accounts of the more destructive insects have been prepared as heretofore and widely circulated through the county farm bureaus and the local papers. Owing to delay in printing, the report for 1916 did not appear until the current year and is the only Museum bulletin on entomology issued in the period covered by this report. A paper of more than usual interest, ‘‘ Insects and Camp Sanitation,’’ was prepared for the Journal of Economic Entomology. CEES 4 783 | 3 967 104 2904 438 5 49 3 381 IRencentealwecie 82.93 27 4.14 9.15 -I0 | 1.02 | .06 | 7.96 None): LF. Y........] 4 582 | I 940 | 2 096 245 484 58 68 ts) 358 Pericentsia|) seme 42.33 | 45.74 SEA TONSO als Tai2O) eX va Sil wera RTO Total <2 Aasicci| sto cvtertee 9 365 | 5 907 | 2 200 539 922 63 117 3 739 Rercentyce delice Wes al) westecee 63.07 | 23.49 Ses 9.84 67 | 1.24 03 | 7.89 Examination of the above table shows first of all the progressive increase in the percentage of perfect apples in plots sprayed once, twice and three times and a markedly smaller per cent on the check trees. There is a marked difference between the amount of scab on the check trees and those which were sprayed and a considerable variation between the plot sprayed once and the two receiving more than one treatment, though for some cause or other plot 3 had a higher percentage of scabby fruit than the one sprayed twice. It is one of the anomalies which can not be readily explained. It will be noted that leaf roller or white-marked tussock moth injury to fruit, probably both, was not materially affected by any of these treatments. Codling moth infestation was much less in this orchard than last year, the percentage for the two check trees, 9.84, falling far below the 41.69 per cent of wormy fruit found in 1917 on the unsprayed trees in this orchard. The relatively light infestation REPORT OF THE STATE ENTOMOLOGIST 1918 19 makes impossible any marked variations as a result of the treatment though the per cent of wormy fruit for the unsprayed plots is some- what less than for the check trees. Attention is also called to the fairly uniform percentage of apples in the various plots showing the peculiar blemish designated as ‘ shallow,”’ the check trees showing about 2 per cent higher than that for the plot sprayed but once and nearly three-fourths of a per cent lower than for the plot sprayed twice. These variations are really quitesmall. The figures given above show that in plot 1, 76 per cent of the wormy apples were injured by ‘‘ shallow,” 92 per cent of plot 2, 95 per cent of plot 3 and 80 per cent of the yield from the check trees. In other words the second and third treatments with a poison spray apparently increase the percentage of ‘‘ shallow-affected”’ apples among the wormy by reducing the number injured in some other manner and apparently this gain is mostly in the elimination of side injury, though the figures do not contrast as strongly as one might wish. Poison and Tobacco for Codling Moth There has been considerable injury to apples in western New York during the last few years owing to young caterpillars hatching from late deposited eggs of the codling moth working just under the skin of the fruit and producing that characteristic and sometimes very general type of injury knownas “‘ shallow ’’ and by some growers confused with the work of second brood codling moth larvae. Investigations of earlier years have absolutely connected this type of injury with young caterpillars hatching from eggs deposited the last of June or early in July upon the smooth surface of the growing apples. The young larvae enter the fruit at almost any convenient point and excavate just under the skin a small gallery with a radius of approximately one-sixteenth of an inch and when this is completed, many at least, instead of going deeper into the apple, forsake the injury and migrate to the blossom end. One of the problems is to prevent this type of mischief. The apple is growing rapidly at the time the codling moth eggs are hatching and consequently it is nearly impossible to keep the fruit well covered with poison during this period. The spraying experiments of earlier years have shown comparatively little influence upon the reduction of the “ shallow ” type of injury except as the infestation in the orchard as a whole was reduced by the successful control of the codling moth in preced- ing seasons. Knowing that the period of oviposition for this pest was an - extended one, lasting a month or more, and that presumably indi- 2 20 NEW YORK STATE MUSEUM vidual moths would live aconsiderable portion of this time, we deemed it worth while to test the effect of a combined spray applied the latter part of June at a time when presumably most of the moths had emerged from their cocoons and before there had been any extensive deposition of eggs and injuring of the fruit by the young larvae. L. F. Strickland, agent of the Department of Farms and Markets, at our suggestion, selected an orchard belonging to R. E. Heard, of Lockport, and sprayed a group of six greening trees June 28th with 1 pint of black leaf forty to 100 gallons of water, to which were added 1 gallon of a standard lime-sulphur preparation and 1} pounds of powdered arsenate of lead. It was hoped that the black leaf forty would destroy some of the moths sheltering in the trees and the spray was therefore directed so as to drench the limbs and trunk as well as to cover the foliage. The poison would also be fatal to any caterpillars feeding upon the foliage. The application was made from the ground with a spray gun and 325 gallons were used on 200 trees. These latter were greenings about roo years old, with a spread of 4o to 45 feet, a height of 30 feet and over and they were well laden. The top of the tree was first covered with a spray; this was then followed by an underspray designed in particular to saturate the limbs and the rough bark of the larger branches and the trunk. A pressure of 225 pounds was maintained and the experimental trees were protected by a barrier row of simi- larly treated trees on all sides. The greenings, owing particularly to a scarcity of labor, were rather too thick in the center and as a consequence it was not possible to do entirely satisfactory work from the ground. This was especially the case on branches near the top of the tree and when picking the men occasionally brought in lots showing an unusually high percentage of infestation. The natural difficulties presented by these trees made it difficult to obtain sharply marked results. The earlier treatment of the orchard had been as follows. Just after the petals fell there was the usual application of a poison lime- sulphur wash, summer strength, all the trees being treated alike. Examinations by Mr Strickland in various orchards July rst resulted in the conclusion that the maximum oviposition by the codling moth probably had not been reached. No unusual developments were noted in the orchard during the summer and at picking time, Sep- tember roth and 11th, the fruit on four of the experimental trees was carefully canvassed and in addition that on one entire tree (tree X) which received the general treatment described above for the orchard and the apples on one side of another (tree Y). These REPORT OF THE STATE ENTOMOLOGIST 1918 21 two trees, X and Y, were three trees west of the six included in the experimental plot and were in the same row, tree Y being north of tree X. The lettering of the trees in the experimental plot was the same as in earlier years, it running from east to west. Tree B bore over 5 barrels, tree C 7% barrels, tree D approximately 1o barrels; tree F 73 barrels, tree X 63 barrels and the half of tree Y 4 barrels. The results of this work are given in the tabulation below. Heard orchard, 1918 CODLING MOTH, WORMY TOTAL | PER- LEAF BUBIES rruit | rect | 5°42? |RoLier : Side Shal- Total | End Side Aug ew shotalls.s itera sete 3 718 | 2 840 94 808 128 3 14 8 112 REE Cent ys ie cera ee ress 76.38 252) 920.73 3-44 08 37 720 3.01 Motalixe jsyos 2 oye 4 979 | 3 125 399 | I 154 287 20 36 14 231 Percenton cance cost tes oe. 62.75 8.01 | 23.17 oor .40 -72 .28 4.63 D MLotalis ® so,o2 026 4:2" Se 777 il) 3) 700: 302 | I 320 328 4 51 39 274 Pigeon einen ae ae 64.04 6.78 | 22.84 5.67 06 88 67 4.74 atalon. cree. at 01 5 280 | 4 050 275 759 188 4 30 8 154 Percent ccc line eters 76.70 Be2t | D4. 37 3.56 07 57 15 2.92 LO Galen s4-He zest Pes 4 455 | 2 704 612 676 436 33 64 28 340 Pert cent... fen ecole eee. 60.69 | 13.73 | 15.17 9.78 74 1.43 62 7.63 AG ei botallincs. Actes e 2 925 | I 675 190 829 222 7 22 9 1903 Pericenthe: poten sell sree 57.26 6.49 | 28.34 7.58 N23 GIS -30 6.59 eas 00O000—Ooom™™ It will be seen from the above tabulation that the trees receiving a special tobacco-arsenate spray bore a smaller percentage of wormy fruit than those which were untreated. This is specially marked in the case of trees B and F, each with a total wormy fruit of about 34 per cent while the check trees yielded over 9} and 71 per cent of wormy apples. The somewhat high percentage of wormy fruit on trees C and Dis probably to be accounted for in part at least by the large size of the trees and the crowded condition in the orchard rendering it difficult to secure the uniform and thorough treatment so desirable in experimental work. It can at least be said that this application appears to have reduced materially the number of wormy apples. The data here, as in earlier experimental work, indicate a considerable uniformity in the proportion of “ shallow-affected ” fruit to the total wormy. For example, the 22 NEW YORK STATE MUSEUM trees receiving the special treatment have 83 per cent of the wormy fruit showing the ‘‘ shallow’”’ blemish, on the check trees it was 82 per cent and on trees B and F, those producing the smallest percentage of wormy fruit, it was 84 percent. These ranges are very small and suggest that reduction in the infestation of the orchard is the surest method of eliminating the ‘‘ shallow ’’ type of injury. On the other hand, it should be stated that there was no such late oviposition as had obtained in earlier years when this trouble was more evident and were such conditions to prevail results might be very different. The information secured amply justifies further tests along these lines. The time for this special treatment was fixed by examinations for eggs upon both leaves and young apples, specially the latter, and an attempt was made to have the spraying come just before many eggs were likely to be deposited. This varies from season to season and appears to be intimately connected with evening temperatures. It is possible that a comparatively simple rule for establishing the most effective time for this treatment can be worked out in connec- tion with observations upon temperatures and oviposition now in progress. A modification of this treatment was tried July 2d on the farm of L.L. Morrell, Kinderhook. Four rows of moderate sized apple trees, mostly greenings and some Baldwins, were dusted with 10 pounds of arsenate of lead, 40 pounds of tobacco and 50 pounds of sulphur. There was a light breeze and the dust drifted through the trees and covered the foliage thoroughly though there was more on the wind- ward side. No codling moth work was visible at the time and later developments prevented a careful classification of the fruit. Mr Morrell expressed himself as very well pleased with the treatment and stated that the fruit was exceptionally free from codling moth injury. Oviposition and Evening Temperatures Unquestionably there is an intimate relation between evening temperatures and the deposition of eggs by the codling moth. In the first place very few eggs are deposited when the early evening temperatures, 8 p. m. and g p. m. sun time, are below 60 degrees and if there is a marked rise above this following a period of rela- tively cool weather, conditions are favorable for the deposition of large numbers of eggs. The low evening temperatures of June and early July in the vicinity of the Great Lakes appear to have a marked effect upon the codling moth and in certain seasons there may be a very general prevalence of the ‘‘ shallow ’’’ type of injury following a delayed oviposition. REPORT OF THE STATE ENTOMOLOGIST 1918 23 Through the kindly cooperation of George W. Mead of Barker and E. E. Crosby of Lockport, temperature records were kept through most of June and July. The two localities were selected for the purpose of ascertaining what differences might exist between the Barker orchard located about 2 miles from Lake Ontario and at an elevation 200 feet high, and the Lockport orchard some 14 miles from the lake and with an elevation of approximately 600 feet, this latter being on the Erie plain. The cool breezes of midsummer are very evident near the lake and less apparent in the vicinity of Lock- port. The temperature records were made at 8 and 9 p. m. (daylight saving time) or 7 and 8 p. m., sun time. The latter record is the most significant so far as codling moth activities are concerned. It will be noted on referring to these records that the thermometer at 9 p. m. did not reach 60 degrees F. or higher until the 24th, rising the last of the month to 70 degrees. It is interesting to note in this connection that field observations resulted in finding eggs in orchards June 27th for the first time and a markedly greater abundance of eggs July 1st, the latter almost exactly coinciding with the decidedly higher evening temperatures. Again there was an increased ovi- position July 12th which, on referring to the temperature records, will be found to follow a series of decidedly higher evening tempera- tures, and this was even more marked on July 16th and 18th. The temperature and oviposition records given below justify the statement that codling moths will not lay many eggs when the early evening temperatures, namely 8 p. m. sun time, are below 60 degrees and a rise to this point or above is very apt to be followed by the deposition of large numbers of eggs, specially in orchards badly infested by this pest. It is not difficult to corroborate this general statement by finding the tiny, glistening, semitransparent or whitish specklike eggs with a diameter a little less than the head of an average pin upon the leaves, and particularly the smooth surface of the fruit. The period of most active egg laying in the western part of the State comes in early July, very likely the first week, though sometimes it may be delayed until the second or even the besinning of the third week. 24 NEW YORK STATE MUSEUM Weather records, June 1918 LOCKPORT, 4 MILES SOUTHEAST Observer, E. E. Crosby BARKER, 3 MILES WEST Observer, George W. Mead DATE — JUNE 8 p. m. Temperature Rain Temperature 9p.m. |Amount] 8 p.m. 9 p.m. Rain Amount CeotoseousncootusconoUoDBToUnoDGO| Socosal|Moogaobr ||pecododK 57 Ot ollie shuns MN Samia Ob a RAS AGGCES Be dead De DOO Mab] hadoGbe | imaou clon nlodele me 72a TPS CON| valerie ere ita nda poi bude boots oe DanoouaT gor 70 72 1.20 54 54b 1g lad GunGs bodn bonus seanoDoocooUOdan 53 Bl G5 slooe 60 yaa ees oats iglgqoansudante Gadeodobool Gpop oooonC 59 Aa ots xthole 60 5 SriSh rector V igounooagbodocvoocud de cone MOUD TOC 56 53 n2X 64 62 in es TAHOE ORO one aone.ou od omtaoS bd Soi 64 SO aiid ooie 70 [oy eee na ORI O ANS ob ado dose COU etC Oru oP eneo 69 66 Ir 70 (oe Paty IN Ne MGaaoodoac BORA BD BOE no a GOCE 74 GOV) arsenier GUN Pot ute neal (ieee eee rt abou seco Osh doouuuSodoU Dosa Oa OOUL 58 SOweer verre 72d SOG Miaecsmaves TOC eee ane eee Sh evalerevenetsre ah Shavers 59 Tein Mo crcute 72 Ty al | pe ae ZO eee ree eisleiciereicloicieicietere 59 54 -8 57 IS Shi | ives siete se cee Pi nn Sun ciaceto osoMeaos.o d raccogd Koto 59 GOW leer 62 60 .85 OVisnoanvouns cb enoHndoouKOKUOKUOUDDOS 48 AST erecta 48 47 .06 CE IobG DAO oGRODmaS oO and buGobuocdapS 59 SS |etaeces& SOE eens -05 Wlasosce ceodo POONCoED bud bbCoGMUaKaS 66 62 3 66 64 Bisiedseeuee Bigs WARE ba helen cichetelen ne resco ele eve etter 63 GOdleren se eee 56 62) “le ereeee Asso mob oUAGe apodeeEmoabocoUmadoRme 70 TO Stas oe 70 GB Sion Be Pe AERA role IOS Doh SONA eH pate vave eit 68 70 sie F6)h|\ 717 Oe |e eres DOT eR eh eteiree cotialialaovereretevelstevencbanevsl||uzevatcnerits OG iievere raters 79 GAN untae ns ZO Lee ele aietee teenie oieretrorchsisisicrsiete 73 Cotas Kesar Ciichis| sb ERR ENIN] Limite coeicy fl tees rected a TWihado acoso ooo DOB Roam TMOODOUUOOUU cS 70 70 ia 67 OW lessees ee a 8.30 and 10.30 p. m. respectively. 69.30 p. m. cIIp.m. d7.45 p. m. and II p. m. respectively. €7.30 p.m. ) p. 188 This presumably pale yellowish male was reared at Albany, N. Y.., September 13, 1907 from rolled elder leaves, Sambucus canadensis. Gall. Reared from rolled elder leaves. Larva. Length 1.5 mm, pale yellowish, slender. Head long, tapering, with a length over twice its diameter; antennae slender, with a length one-half greater than the diameter of the anterior fourth of the head. The chitinous rods supporting the head one-half longer than the head, converging posteriorly, the second segment with a diameter twice that of the basal portion of the head, the third with a diameter twice the posterior width of the second segment; the second, third and fourth segments at least, with long, well devel- oped, submedian, sublateral and lateral setae, those of the fifth visible only on the lateral margins and on the following segments apparently rudimentary. Skin coarsely shagreened; posterior extremity roundly emarginate, with obscure submedian tubercles. Male. Lengthrmm. Antennae one-fourth longer than the body, rather sparsely haired, pale yellowish; fourteen segments, the fifth with stems two and one-half times the diameter; terminal segment produced, the distal enlargement cylindric, with a length two and one-fourth times its diameter; apical process rather short, stout. Palpi; first segment subquadrate, the second with a length three times its diameter, the third as long as the second, slender, the fourth one-fourth longer than the third, slender. Thorax and abdomen probably pale yellowish. Wings hyaline, costa light straw. Halteres and legs probably pale yellowish; claws very long, slender, evenly curved, the pulvilli shorter than the claws. Genitalia; basal clasp segment long, slender; terminal clasp segment swollen basally; dorsal plate very short, deeply and narrowly emarginate, the lobes truncate; ventral plate long, broad, broadly and slightly emarginate. Type Cecid. a1723. 2 NEW YORK STATE MUSEUM 9 Arthrocnodax occidentalis Felt 1912. Felt, E. P. Econ. Ent. Jour., 5: 402 1912 Quayle, H. J. Cal. Agr. Expt. Sta. Bul. 234, p. 514-15 1913. ——————_ Econ. Ent. Jour., 6:87 1914 Ewing, H.E. Ore. Agr. Expt. Sta. Bul. 121, p. 58 1914 Felt, E. P. Econ. Ent. Jour., 7:458 This midge was reared by Prof. H. J. Quayle from larvae preying on red spider, Tetranychus, Berkeley, Cal. It is considered one of the most important natural enemies of T. telarius on the Pacific coast. PRODIPLOsIS Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 403 1910 Rubsaamen, E.H. Zeitsch. Wissenschaft. Insektenbiol., 15:289 1911 Felt, E.P. N. Y. Ent. Soc. Jour., 19:56 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 249 This genus was erected for certain small forms which show an interesting transition between the typical binodose antennae of the male Itonid and the cylindric stemmed antennae of Rhop- alomyia. The circumfila are rudimentary or wanting. The third to ninth segments are distinctly binodose, the eighth and ninth only slightly so, while the tenth to the fourteenth are cylindric. The claws are simple. The third vein unites with the wing margin well beyond the apex. The genitalia are peculiar on account of the somewhat inflated harpes. Type Cecidomyia floricola Felt, C. a1681. Prodiplosis floricola Felt 1907 Felt, E.P. New Species of Cecidomyiidae II, p. 21 (Cecidomyia) 1908 ——-——— N.Y. State Mus. Bul. 124, p. 302, 403 1918 ——————_ N.Y. State Mus. Bul. 200, p. 129, 133 The pale yellowish male described below was reared August 15, 1907 from somewhat enlarged, reddened flowers of the meadow sweet, Spiraea ‘salicitolia; taken at Albany Na. Apparently the same form was obtained from enlarged blossoms of Virgins bower, Clematis virginiana, taken at Karner, N. Y., August 15, 1907. Gall. The enlarged flower buds in spiraea are reddish. As the season advances, infested blossoms become conspicuous because of their failing to open. Male. Lengthi1mm. Antennae one-fourth longer than the body, sparsely haired, pale straw; fourteen segments, the fifth (fig. 7a) with stems one and two times their diameters respectively; basal enlargement subglobose, a subbasal whorl of rather long, curved setae, the distal enlargement broadly oval, a few scattering whorls REPORT OF THE STATE ENTOMOLOGIST 1918 93 of long, curved setae; circumfila apparently absent, the 1oth (fig. 7b) to the 14th segments cylindric, the tenth with smooth stem two- thirds the length of the cylindric basal enlargement, which latter has a length three times its diameter and sparse whorls of hair sub- basally and near the distal third: terminal segment stout, tapering, a short, stout appendage distally. Palpi; the first segment short, stout, slightly swollen distally, the second one-half longer, a little stouter, the third longer and more slender than the second, the fourth one-fourth longer and more slender than the third: face pale yellowish. Mesonotum brown, the submedian lines indistinct. Scutellum yellowish with a few long setae, postscutellum yellowish. Abdomen pale yellowish, the segments margined posteriorly with Fig. 7 Prodiplosis floricola: a, fifth and 0b, tenth antennal seg- ments of male, only a few setae sketched in (enlarged, original) long hairs. Wings hyaline, costa light straw, subcosta uniting with the margin near the basal third, the third vein well beyond the apex, the fifth at the distal third, its branch near the basal third; halteres pale yellowish. Coxae, femora and tibiae pale yellowish, tarsi brownish gray, the segments paler basally; claws long, slender, slightly curved, simple, the pulvilli shorter than the claws. Geni- talia; basal clasp segment short, stout, roundly truncate; terminal clasp segment stout, swollen at the base, tapering, an apical spur; dorsal plate short, stout, deeply and narrowly incised, the lobes long, slender, tapering, irregularly angulate; ventral plate long, broad, the sides parallel, broadly and roundly emarginate, the lobes irregularly rounded. Harpes apparently very long, slender, irregu- larly curved, greatly dilated at the base, strongly curved, near the middle, tapering, obtuse; style long, slender, strongly curved. Type Cecid. a1681. Prodiplosis fitchii Felt 1912 Felt, E.P. Econ. Ent. Jour., 5:288-89 This midge was labeled by Dr Asa Fitch as having been reared from shrunken grains of wheat. Q4 NEW YORK STATE MUSEUM cARYOMYIA Felt 1909 Felt, E.P. Econ. Ent. Jour., 2:292 1911 —————— N.Y. Ent. Soc. Jour., 19:56 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 144 The males may have the flagellate antennal segments binodose or cylindric and subsessile. There are invariably three low, stout circumfila. The antennal segments of the female are cylindric, and with two circumfila. The palpi are tri- or quadriarticulate. The wings are relatively broad (pl. 15, fig. 4), the third vein uniting with the margin at or near the apex. The claws are simple and the pul- villi well developed. Type Cecidomyia tubicola O.S. This genus has somewhat the appearance of a small Hormemyia rt Trishormomyia except that the mesonotum is not greatly pro- duced over the head and there are but fourteen antennal segments in both sexes. The male genitalia are much as in Hormomyia while the ovipositor of the female is short, triangular and with minute lobes apically. Caryomyia may be an aberrant Asphondylid somewhat allied to Cincticornia, since the circumfila in the two genera are not markedly different and they occur upon the somewhat related Carya and Quercus. The constrictions in the antennal segments (fig. ga) in some species of Caryomyia are such that too much importance should not be attached to them, specially as there are species where the constrictions are slight or wanting. It is possibly a connecting form and one might consider that in Caryomyia we had the process of constriction and extension of the antennal segments, so character- istic of the Itonididinariae as a whole, in an incipient stage. The larvae are usually stout, whitish and in the majority of the species the breastbone is slender and unidentate (fig. 14), a few have it narrowly bidentate (fig. 12), while in C. caryae O.S. this organ (fig. 8) is dilated apically and has the two teeth widely separated. The genus Caryomyia produces most of the peculiar and variable leaf galls on hickory (see plate 10). Several of these, as observed by the late Doctor Thompson, begin as a brownish blistered area with a slight central point and as the galls develop the overlying epidermis is torn apart. A fuller description of this is given in the account of C. inanis Felt. The winter is passed by the larvae within the galls, the flies issuing about the time the young leaves appear. ‘Two females were found at Nassau May 11, 1911, hope- lessly stuck in the exudations from hickory buds. It not infre- quently happens that several species of Caryomyia galls occur upon the same leaf. ‘ REPORT OF THE STATE ENTOMOLOGIST 1918 No) cn Key to Species @ Antennae of the male distinctly binodose b Nodes separated by distinct stems, the circumfila moderately long ¢ Basal stem of fifth antennal segment long, with a length considerably more than its diameter ; d Male; length 3 mm, abdomen deep reddish orange; dorsal plate broad, narrowly emarginate, the lobes rounded: ventral plate broad, roundly emarginate, the lobes broadly rounded; terminal clasp segment long, hardly tapering. Female; length 4 mm, abdomen dark reddish orange; fifth antennal segment with a length three and one-half times its diameter; ovipositor with the lobes protuberant: wings long; larval breastbone unidentate. Reared from a yellowish green or brown, subglobular, thick-walled, hickory leaf gall 4 to.'5’ mmf in diameters.) 7) 2). 2) Se antennata Felt, C. arg44 dd Male; length 2.25 mm, abdomen deep reddish orange, the ventral! plate broadly subtruncate, the terminal clasp segment long, tapering. Female; length 3 mm, the fifth antennal segment with a length three times its diameter, the ovipositor with the lobes protuberant, the wings long, Larval breastbone bidentate, the teeth distant. Reared from a globose, thin-walled, yel- lowish green or brown hickory leaf gall about 2 mm in diameter caryae O.S., C. 1104, a1321, alg06 «c Basal stem of fifth antennal segment short, with a length only about one-half its diameter d Male; length 2.5 mm. Abdomen fuscous yellowish, the ventral plate broad, broadly and triangularly emarginate. Female; length 3.5 mm; abdomen dark red, the fifth antennal segment with a length three and one-half times its diameter; ovipositor with the lobes indistinct, the wings relatively long; larval breastbone unidentate. Reared from a rust-red, hairy, thin- walled, hickory leaf gall 3 to 4 mm in diameter........... axe holotricha ©: S., C. argo dd Male; length 2 mm; abdomen fuscous yellowish, the ventral plate broadly and roundly emarginate. Female; length 3 mm; abdomen a brownish orange, the fifth antennal segment with a length three and one-half times its diameter; larval breast- bone unidentate. Reared from a small, depressed, globular, yellowish green or brownish, thin-walled hickory leaf gall, some 2 mm in diameter...... consobrina Felt, C. a1948 5b Nodes of the basal antennal segments separated only by a deep constric- tion, the circumfila short and stout ¢ Male; length 3 mm; abdomen fuscous orange, the dorsal plate broadly and triangularly emarginate, the ventral plate broadly truncate; terminal clasp segment short, hardly tapering distally. Presum- ably reared from a green, thin-walled, globose, hickory leaf gall... arcuaria Felt, C. rrogx 96 NEW YORK STATE MUSEUM aa Male; antennal segments cylindric, sessile, the circumfila short and stout b Wings short or rather short c Male; length 2 mm; abdomen dark red, the fifth antennal segment with a length three and one-half times its diameter, the dorsal plate broadly and narrowly emarginate, the lobes irregularly and broadly rounded, the ventral plate long, broad and broadly rounded. Female; length 1.75 mm; abdomen yellowish orange, the fifth antennal segment with a length two and one-half times its diameter, the lobes slightly produced, acute; larval breastbone unidentate. Reared from a small, green or red-tinted, conic, inickory ‘leat gallsome) 2 mimMlong... 25a ecs specicce ae acre eee sanguinolenta O.S., C. a1945 bb Wings short, broad c Ventral plate broadly rounded d Male; length 1.75 mm; abdomen dark red, the dorsal plate triangularly emarginate, the lobes angular. Female; length 2 to 3 mm; abdomen dark red, the fifth antennal segment with a length two and one-half times its diameter, the lobes protuberant; larval breastbone slender, bidentate. Reared from a rust-red, long-haired, globular, hickory leaf gall 2 to 3 mm in diameter...thompsoni Felt, C. 1116a, C. a1g08 cc Ventral plate emarginate d Male; length 1.75 mm; abdomen dark red, the fifth antennal segment with a length three and one-half times its diameter. Female; length 1.5 mm; abdomen reddish orange, the fifth antennal segment with a length two and one-half to three times its diameter; ovipositor with the lobes short, slightly protuberant; larval breastbone unidentate. eared from a greenish or black tubular, hickory leaf gall 2 to 3 mm long... tubicola O.S., C. a1450, C. 1106, a1320 dd Male; length 1.75 mm; abdomen reddish orange, the fifth antennal segment with a length twice its diameter. Female; length 2.75 mm; abdomen dark reddish orange, the fifth antennal segment with a length three and one-half times its diameter; ovipositor with the lobes protuberant; larval breastbone unidentate. Reared from a thin-walled, sub- globular, slightly nippled, hickory leaf gall 2 to 3 mm in diameter!) ii) aes, eet eis similis Felt, C. a1g46 Table of Larvae and Galls This table is designed to assist in the identification of the species by characters found in the galls and larvae. It should be considered as tentative and suggestive rather than as final, owing to the varia- tions in the galls and the difficulty of finding satisfactory specific characters in the larvae. It is probable that other species of Cary- omyia, aside from those tabulated below, will be found to inhabit the hickory. Certain species are tentatively assigned to this genus REPORT OF THE STATE ENTOMOLOGIST 1918 Q7 a Breastbone unidentate, slender ° b Gall distinctly hairy ¢ Gall globose, small, thin-walled, long-haired, reddish (pl. 10, fig. 4).. holotricha O.S., C. argog, C. 11122, al137, a1333 cc Gall subglobose, large, thick-walled, short-haired, reddish.......... persicoides Beutm., C. argaia 6b Galls smooth or at most sparsely pubescent ¢ Gall tubular, greenish or blackish (fig. 13, and PIS )eo Rae, Aerie tubicola O,S., C. 1106, a1320, a1450 cc Galls globose d'Gall) thin-walled: purplish or'redi 4.) 0). ee eee eee sanguinolenta O.S., C. a1g45 dd Gall small, thin-walled, depressed, yellowish green or brown.... similis Felt, C. ar946 ddd Gall small, thin-walled, with empty cavity above, green or Drownishs s .43...2 See Bee inanis Felt, C. arg50 dddd Gall small, thick-walled, depressed, yellowish brown or green (ple TOs figs Ome ie, yo consiobrinia Belt, Cyarosasee.. ddddd Gall large, thick-walled, yellowish or brown (pl. 10, fig. 1)...... antennata Felt, C. a1944 fe Gall conical, the apex long (pl. 10, fig: 2,-3)... fee ee eee caryaecola n.sp., C. a1786 cccc Gall an irregular midrib swelling............ cynipsea O.S. bbb Gall not produced, the larva exposed. on leaf and causing a yellowish DOF ts RCE EA EAR PEN PER Se Ale CERES Aned HRM TS Belay Foe glutinosa O.S. aa Breastbone bidentate b Breastbone slender, the teeth approximate basally c Gall small, globose, with long, erect, reddish or fuscous hairs (pl. 10, iit) so BOOED oe thompsoni Felt, C. 1116a, a1325, a1908 cc Gall an irregular swelling on the husk........... nucicola O.S. 6b Breastbone broad, the teeth widely separated c Gall globose, thin-walled, yellowish green or brown (pl. 10, fig. 7).. caryae O.S., C. 1104, aI321, a1906 aaa Larval characters unknown, generic reference provisional b Greenish or blackish blister leaf gall, diameter about 3 mm (plate 9).. Caryomyia sp. Caryomyia caryae O. 5. 1862 Osten Sacken, C. RR. Mon. Dipt. N. A., 1:191 (Cecidomyia) 1870 ——————— Trans. Amer. Ent. Soc., 3:59 (Callimome dura O. S. a parasite, Diplosis) 1906 Felt, E. P. Ins. Affec. Pk. & Wdld. Trees, N. Y. State Mus. Mem. 8, 2:745 (Cecidomyia) 1907 Jarvis, T. D. Ent. Soc. Ont., 37th Rep’t, p. 67 (Cecidomyia) 1907 Felt, E.P. N.Y. State Mus. Bul. 110, p. 143; separate, p. 47 (Dirhiza) 1907 Cook, M.T. Acad. Sci. Proc., separate, p. 7 (Cecidomyia) 1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 388 (Cecidomyia) 1909 ——————_ Ent. Soc. Ont., 39th Rep’t, p. 45 (Hormomyia) 1909 ———————._ Econ. Ent. Jour., 2:293 1909 Jarvis, T. D. Ent. Soc. Ont., 39th Rep’t, p. 84 (Cecidomyia) 1910 Stebbins, F. A. Springfield Mus. Nat. Hist. Bul. 2, p. 14 (Hormomyia) 1918 Felt, E.P. N. Y. State Mus. Bul. 200, p. 46 The small, yellowish green or brown galls (pl. ro, fig. 7) of this species are rather abundant on hickory leaves though rarely so 08 NEW YORK STATE MUSEUM numerous as those of some other species. They occur commonly in the vicinity of New York City, and about Albany, N. Y. They have been recorded from Ontario by Jarvis. The galls begin to appear in June and by October contain a full- grown larva. The latter remains in its retreat till the following spring, then transforms to a pupa and normally produces an adult probably early in June. The midge described by Osten Sacken under the name of Diplosis caryae as the maker of this gall is probably an inquiline. In any event it can hardly be a Caryomyia. Adopting recognized principles of nomenclature, we have restricted the name caryae to the characteristic larva found by Osten Sacken within the gall and described by him prior to the description of the adult. The type specimens of the gall in the Museum of Comparative Zoology confirm our identification of this interesting species. Platygaster caryae Ashm.and Ceroplaty - merus caryae Ashm. (Insect Life, 4:125) may have been reared from this gall. Gall. Gall (pl. 10, fig. 7) about 2 mm in diameter, irregularly subglobular, usually with a slight nipple, sometimes distorted by pressure of adjacent galls, yellowish green or brown, very sparsely clothed with short, whitish hairs, thin-walled, monothalamous. Larva. Length 2.5 mm, stout, white and easily distinguished by Fig. 8 Caryomyia caryae, breastbone of larva (en- larged, original) the rather] conspicuous breastbone (fig. 8) with its two slender, widely separated toothlike projections. Head small; antennae REPORT OF THE STATE ENTOMOLOGIST 1918 99 short, bidentate. Skin finely shagreened. The body tapers pos- teriorly to a narrowly rounded, nearly unarmed posterior extremity. Male. Length 2.25 mm. Antennae about three-fourths the length of the body, sparsely haired, yellowish; fourteen binodose segments, the fifth with stems one and one-half times their diameters respectively; distal enlargement subcylindric, with a length about one-fourth greater than its diameter, terminal segment reduced, narrowly oval. Palpi; first segment short, stout, sub- quadrate, the second slender, with a length at least four times its diameter, the third as long as the second, the fourth longer than the Fig. 9 Caryomyia arcuaria: a, third antennal segment of male, only two setae sketched in; 6, a portion of the distal part in section showing the invaginated or concealed stem; c, Caryae: fifth antennal segment of female (enlarged, original) third, dilated. Mesonotum fuscous yellowish, the submedian lines sparsely haired. Scutellum reddish orange, postscutellum fuscous yellowish. Abdomen deep reddish orange, the segments sparsely setose posteriorly. Wings hyaline, costa dark brown. Halteres yellowish basally, fuscous apically. Coxae and legs a variable fuscous yellowish, the tarsi somewhat darker; claws long, slender, evenly curved, the pulvilli longer than the claws. Genitalia; basal clasp segment short, stout; terminal clasp segment long, stout; dorsal plate short, broadly and roundly emarginate, the lobes trun- cate; ventral plate long, broad, subtruncate. Female. Length 3 mm. Antennae extending to the second abdominal segment, sparsely haired, pale yellowish; fourteen sessile, cylindric segments, the fifth (fig. oc) with a length three times its diameter; subbasal whorl thick, double, subapical whorl sparse, single; low circumfila at the basal half and apically, anastomosing irregularly; terminal segment slightly reduced, narrowly rounded. Face fuscous yellowish. Palpi; first segment short, stout, the second with a length five times its diameter, rather narrow, the third stout, with a length two and one-half times its diameter, the fourth one- half longer, somewhat dilated. Mesonotum dark brown, the sub- median lines thickly haired. Scutellum yellowish, pale reddish and | YOO NEW YORK STATE MUSEUM thickly haired apically, postscutellum yellowish. Abdomen pale yellowish orange, the distal segments fuscous yellowish, all sparsely margined posteriorly with fuscous hairs; ovipositor pale yellowish. Claws stout, strongly curved, the pulvilli longer than the claws. Ovipositor short, stout, terminal lobes broadly triangular, narrowly rounded. Cecid. 1104, argo6. Caryomyia antennata Felt 1909 Felt, E. P. Econ. Ent. Jour., 2:292 The midge produces one of the common hickory leaf galls about Albany, N. Y. Gall. Yellowish green or brown, subglobular (pl. 10, fig. 1), thick-walled, the shape frequently modified by the pressure of con- tiguous galls, 4 to 5 mm in diameter, the surface sparsely clothed with a minute pubescence; walls very thick, with a diameter of 1mm or more. Larva. Length 2.25 mm, white, rather stout, tne head small, antennae short, stout. Breastbone rather stout, unidentate, the tooth long, rather stout, the shaft somewhat enlarged at each extrem- ity. Posteriorly the body tapers to the broadly rounded extremity. Exuvae. Length 3 mm, whitish, stout. Antennal cases short, stout, with a rounded, chitinous thickening at the base. Thoracic horns rather long, slender, slightly curved. Wing cases extending to the fourth abdominal segment, the leg cases to the fifth, dorsum of the latter thickly margined posteriorly with six or seven trans- verse rows of stout, chitinous spines, posterior extremity nearly unarmed, broadly rounded. Male. Length 3mm. Antennae extending to the fourth abdom- inal segment, sparsely haired, fuscous yellowish; fourteen binodose segments, the fifth with stems two and one-half times their diameters respectively, the distal enlargement narrowly oval; terminal segment reduced, narrowly oval. Palpi probably quadriarticulate, the distal segment produced, with a length four times its diameter. _Mesono- tum fuscous yellowish, the submedian lines sparsely haired. Scu- tellum reddish, postscutellum, fuscous yellowish. Abdomen deep reddish orange, the segments sparsely margined posteriorly with fuscous setae; genitalia fuscous yellowish. Wings hyaline, costa pale straw. Halteres pale yellowish. Coxae and legs mostly fuscous yellowish; claws slender, evenly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment stout, terminal clasp segment stout, long, hardly tapering; dorsal plate long, broad, rather deeply and roundly emarginate, the lobes broadly rounded; ventral plate long, broad, broadly and roundly emarginate. Female. Length 4 mm. Antennae extending to the second abdominal segment, sparsely haired, whitish transparent; fourteen cylindric sessile segments, the fifth with a length three and one-half times its diameter; subbasal whorl rather thick, irregular; subapical whorl broad, irregular; circumfila at the basal third and apically, anastomosing somewhat irregularly ; terminal segment narrowly oval. REPORT OF THE STATE ENTOMOLOGIST 1918 Io! Palpi; first segment with a length three times its diameter, incrassate, the second narrowly oval, the third and fourth as long as the first, the fourth somewhat dilated. Mesonotum yellowish brown, the sub- median lines sparsely haired. Scutellum fuscous yellowish, post- scutellum reddish. Abdomen dark reddish orange, the terminal segment and ovipositor fuscous yellowish, the lobes shghtly pro- tuberant, narrowly rounded. Type Cecid. a194q. Caryomyia holotricha O. S. 1862 Osten Sacken, C.R. Mon. Dipt. N. A., 1:193 (Cecidomyia) 1874 Glover, Townend. Ms. Notes My Jour. Dipt., pl. 11, fig. 23 (Cecidomyia) 1892 Beutenmueller, William. Am. Mus. Nat. Hist. Bul., 4:266 (Cecidomyia) 1904 Am. Mus. Nat. Hist. Guide Leaflet 16, p. 26-27 (Cecidomyia) 1904 Cook, M. T. Ohio State Univ. Bul., ser. 8, 13:140-41 (Cecidomyia) iSO5Goaa—— Dep't Zool. & Nat. Res. Ind. 29th Rep’t, p.’ 840 (Cecidomyia) 1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:619, 628, pl. 1, fig. 4 (Cecidomyia) iofa.————_N. Y.\otate’ Mus. Bul 110, ‘p. 143, separates eps 47 (Dirhiza caryae) 1908 -~—_———__N Y. State Mus. Bul. 124, p. 389 (Hormomyia) 1909 ——————_ Ent. Soc. Ont., 39th Rep’t, p. 45 (Hormomyia) 1909 ——————_ Econ. Ent. Jour., 2:293 1909 Jarvis, T. D. Ent. Soc. Ont., 39th Rep’t, p. 84 (Cecidomyia) 1910 Stebbins, F. A. Springfield Mus. Nat. Hist. Bul. 2, p. 13 (Hormomyia) 1918 Felt, E. P. N. Y. State Mus. Bul. 200, p. 47 This small, globular, fuzzy, rust-red, hickory leaf gall is one of the most common occurring in New York State, sometimes being so abundant as to cover nearly the entire under surface of the leaf. This species is evidently widely distributed, since it was observed by the writer at Asheville, N. C., has been taken in numbers about New York City, listed from Ontario, Canada, by Jarvis and is recorded as being very abundant in Indiana by Cook. The galls, are usually on the under surface of the leaf. They are first yellowish, becoming reddish brown in autumn. ‘The insects winter in the gall, the flies appearing in early spring. Leptacis floridanus Ashm. was reared from this gall. Gall. Diameter 2 to 4 mm, globular or subglobular (pl. 6, fig. 4), thickly clothed with rather long yellowish or rust-red hairs, mono- thalamous, the walls rather thin. Larva. Length 3 mm, stout, whitish, the head small; antennae long, bidentate; breastbone narrow, unidentate, the tooth long ? TO2 NEW YORK STATE MUSEUM roundly triangular. Segmentation rather distinct, the skin smooth. Posterior extremity broadly rounded, unarmed. Exuvium. Length 3 mm, whitish; antennal sheaths short, annulate distally, the internal basal angles somewhat chitinized; dorsal horns long, slender. Abdominal segments with the dorsum thickly clothed with chitinous points and margined posteriorly with several rows of long, stout, chitinous spines. Male. Length 2.5 mm. Antennae nearly as long as the body sparsely haired, whitish transparent; fourteen segments, the fifth with stems one-half and one and one-fourth times their diameters respectively, distal enlargement cylindric, with a length twice its diameter. Palpi fuscous yellowish, the first segment stout, incras- sate, the second broadly oval, the third one-half longer, rectangular, the fourth one-half longer than the third. | Mesonotum fuscous yellowish, the submedian lines sparsely haired. Scutellum yellowish b Fig. 10 Caryomyia holotricha: a, sixth antennal segment of female; }, palpus of female (enlarged, original) red, postscutellum yellowish. Abdomen fuscous yellowish, darker basally; genitalia fuscous yellowish. Wings hyaline, costa pale straw. Halteres mostly pale yellowish. Coxae and legs fuscous yellowish, the tarsi variably tinged with carmine; claws slender, evenly curved, the pulvilli hardly as long as the claws. Genitalia; basal clasp segment stout, terminal clasp segment short, narrowly oval; dorsal plate long, broad, triangularly emarginate; the lobes narrowly rounded; ventral plate broad, broadly emarginate, the lobes broadly rounded. Female. Length 3.5 mm. Antennae extending to the second abdominal segment, whitish transparent, sparsely haired; fourteen segments, the fifth (fig. roa) with a length three and one-half times its diameter, subbasal and apical whorls sparse, circumfila at the basal half and apically; terminal segment slightly reduced, narrowly oval. Palpi (fig. 10b); first segment stout, incrassate, the second rectangular, with a length three times its diameter, the third as long as the second, slender, the fourth a little longer than the third. REPORT OF THE STATE ENTOMOLOGIST 1918 103 Mesonotum dark brown, the submedian lines sparsely haired. Scutellum reddish orange, postscutellum pale orange. Abdomen deep red, the segments sparsely margined with short, fuscous hairs; —————s Fig. 11 Caryomyia holotricha, side view of terminal abdominal seg- ments and ovipositor (enlarged, original) ovipositor pale yellowish. Halteres pale orange, fuscous subapically. Ovipositor short (fig. rr), the lobes indistinct, tapering, narrowly rounded. Cecid. argec Caryomyia consobrina Felt 1909 Felt, E. P. Econ. Ent. Jour., 2:292 1918 ————— N.Y. State Mus. Bul. 200, p. 46 This species was reared in April and May tr909, from a small, depressed, globular, yellowish green or brownish, thin-walled, hickory leaf gall taken at Nassau, N. Y., September 16, 1908, a deformity quite distinct from that produced by C. holotricha O.S. Gall. An irregular, small, depressed, globular, yellowish green or brownish, thin-walled gall (pl. ro, fig. 9), some 2 to 23 mm in diameter with the surface very sparsely clothed with fine hairs. This gall has a somewhat general resemblance to that of C.antennata, from which it is easily separated by the much thinner walls. Larva. Length 2.25 mm, whitish, stout, the head small; antennae short, stout. Breastbone rather stout, unidentate, the tooth long, slender, acute, the shaft somewhat expanded anteriorly, subobsolete posteriorly, the body hardly tapering, the posterior extremity broadly rounded. Exuvium. Length 2.5 mm, whitish. Antennal cases short, dis- tinctly segmented distally, the internal basal angles slightly chitinized, dorsal horns rather stout, slightly curved. Wing and leg pads 104 NEW YORK STATE MUSEUM extending to the fourth abdominal segment, the dorsum of the latter with the segments margined with three or four rather sparse rows of stout, chitinous spines. Male. Length, 2 mm. Antennae as long as the body, thickly haired, whitish transparent; fourteen segments, the fifth with stems one-half and one and one-fourth times their diameters respectively; the distal enlargement cylindric, with a length about twice its diam- eter, a broad, scattering whorl of stout setae, the circumfila with short loops; terminal segment produced, the distal enlargement with a length three times its diameter, tapering. Palpi; the first segment short, stout, the second with a length about four times its diameter, the third a little shorter, stouter, the fourth twice the length of the third, dilated. Mesonotum yellowish brown. Scutellum and post- scutellum orange. Abdomen rather thickly haired, fuscous yellowish, genitalia yellowish. Wings hyaline, costa pale straw. Halteres yellowish basally, fuscous apically. Coxae and legs fuscous yel- lowish, the tarsi tinged with pale orange; claws slender, evenly curved, the pulvilli a little shorter than the claws. Genitalia; basal clasp segment long, stout; terminal clasp segment short, tapering; dorsal plate long, deeply and triangularly emarginate, the lobes narrowly rounded; ventral plate long, slightly expanded, broadly and roundly emarginate, the lobes slightly rounded. Female. Length 3 mm. Antennae extending to the second abdominal segment, sparsely haired, pale yellowish and variably tinged with carmine; fourteen sessile segments, the fifth with a length three and one-half times its diameter; subbasal whorl scat- tering, broad, subapical whorl scattering; circumfila near the basal half and apically; terminal segment slightly reduced, narrowly oval. Palpi; first segment stout, with a length three times its diameter, the second as long, more slender, the third a little longer, somewhat dilated, the fourth as long as the third, more dilated. _Mesonotum yellowish brown, the submedian lines rather thickly haired. Scu- tellum and postscutellum pale orange. Abdomen sparsely haired, brownish orange; ovipositor pale yellowish. Halteres yellowish orange, fuscous subapically. Coxae and femora fuscous straw, tibiae and tarsi somewhat darker; claws rather stout, strongly curved, the pulvilli longer than the claws. Ovipositor short, the lobes tapering, narrowly rounded. Type Cecid. a1g48. : Caryomyia arcuaria Felt 1908 Felt, E. P. N.Y. State Mus. Bul. 124, p. 338 (Hormomyia) 1918) -———__— | (NY, state! Mus, Buls200,;p.,46 This peculiar male was separated from a series of specimens reared by the late Dr M. T. Thompson of Clark University, Worces- ter, Mass., from what appear to be a typical lot of Caryomyia caryae galls. This insect may have come from one of these galls. _ Male. Length 3mm. Antennae extending to the fourth abdom- inal segment, sparsely haired, light yellowish; fourteen segments, REPORT OF THE STATE ENTOMOLOGIST 1918 105 the fifth with a length about four times its diameter, with a deep, short constriction near the basal third, the basal portion subglobose, the distal part cylindric, with a length nearly twice its diameter; circumfila stout, the loops moderately short, rather sparse (figs. ga, 9b) ; terminal segment somewhat produced, strongly constricted near the middle, tapering apically, narrowly rounded. Palpi; first segment long, slender, the second twice the length of the first, slender, the third three-fourths the length of the second, broader, the fourth one-half longer than the third, dilated. Mesonotum light brown, the broad submedian lines and posterior median area yellowish. Scutellum and postscutellum pale yellow. Abdomen a fuscous orange; basal segment dark brown, the distal segments lighter. Wings hyaline, costa light brown. Halteres and legs yellowish transparent; claws long, slender, slightly curved, the pulvilli as long as the claws. Genitalia; basal clasp segment short, stout; terminal clasp segment very short, greatly swollen, hardly tapering; dorsal plate short, broadly and triangularly emarginate, the lobes narrowly rounded; ventral plate broad, truncate. Type Cecid. 1104x. Caryomyia sanguinolenta O. 5S. 1862 Osten Sacken, C. R.* Mon. Dipt. N. A., 1:192 (Cecidomyia) 1892 Beutenmueller, William. Am. Mus. Nat. Hist. Bul. 4:267 (Cecidomyia) 1904 —— Am. Mus. Nat. Hist. Guide Leaflet 16, p. 28 (Cecidomyia) 1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:718 (Cecidomyia) 1908 Jarvis, T.D. Ent. Soc. Ont., 28th Rep’t, p. 87 (Cecidomyia) 1909 ———————_ Ent. Soc. Ont., 39th Rep’t, p. 84 (Cecidomyia) 1909 Felt, E. P. Econ. Ent. Jour., 2:293 : 1910 Stebbins, F. A. Springfield Mus. Nat. Hist. Biel, 2s joe 1s (Cecidomyia) 1918 Felt, E.P. N. Y. State Mus. Bul. 200, p. 43 This species is widely distributed though not, as a rule, very abundant. It has been recorded from the vicinity of New York City, occurs here and there and is occasionally numerous in the neighborhood of Albany, N. Y., and has been recorded from Ontario by Mr Jarvis. The gall is a small, greenish, conical deformity fre- quently with a blood-red or purplish red coloring. Galls bearing this name in the Museum of Comparative Zoology are nearer the - midvein than the margin of the leaf, conical and with a very slender tip. Gall. Two to 3 mm in diameter, conical with a distinct nipple, greenish and variably tinged with purplish or blood red. Larva. The larva has been described by Osten Sacken as yellowish with a distinctly pointed, spear-shaped breastbone. Male. Length 2 mm. Antennae nearly as long as the body, sparsely haired, fuscous yellowish; fourteen sessile segments, the fifth with a length two and one-half times its diameter; circumfila 106 NEW YORK STATE MUSEUM stout, the loops short, broad; terminal segment produced, tapering, narrowly rounded. Palpi; first segment short, stout, second one- half longer, slender, the third broadly oval, the fourth a little longer, tapering distally. Mesonotum shining yellowish brown, the sub- median lines thickly haired. Scutellum dark reddish brown, post- scutellum reddish orange. Abdomen dark red, somewhat fuscous basally and laterally, the segments sparsely margined with fuscous hairs. Genitalia fuscous yellowish. Wings hyaline, costa yellowish brown. Halteres yellowish, fuscous subapically. Coxae, femora and tibiae fuscous yellowish, the tarsi a little darker; claws stout, strongly curved, the pulvilli as long as the claws. Genitalia; basal clasp segment stout; terminal clasp segment moderately slender; dorsal plate short, deeply and triangularly emarginate, the lobes broadly rounded; ventral plate broad, very broadly emarginate, the lobes broadly rounded. Female. Length 1.75 mm. Antennae extending to the second abdominal segment, sparsely haired, pale yellowish carmine apically; fourteen segments, the fifth with a length two and one-half times its diameter; rather high circumfila at the basal third and apically; terminal segment slightly reduced, tapering, narrowly rounded. Palpi; first segment short, stout, the second broadly oval, the third a little longer, more slender, the fourth twice the length of the third. Mesonotum shining dark brown, the submedian lines thickly haired. Scutellum fuscous yellowish, postscutellum yellowish. Abdomen yellowish orange, the basal segments reddish; ovipositor yellowish transparent. Halteres pale yellowish. Coxae, femora and tibiae mostly pale straw, the tarsi a variable fuscous yellowish; claws rather slender, evenly curved, pulvilli as long as the claws. Ovi- positor short, terminal lobes protuberant, triangular. Cecid. args. Caryomyia thompsoni Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 388 (Hormomyia) 1918 —————_ N.Y. State Mus. Bul. 200, p. 7 This species was first reared by the late Dr M. T. Thompson, who apparently obtained it from a gall which he described as yellow, green or brown, melon-shaped, with a depressed center and either smooth with sparse, short, whitish hairs or quite pubescent. Subse- quent rearings in the spring of 1908 enabled us to obtain in some numbers apparently the same insect from a peculiar small, globular, long-haired, thin-walled gall taken the preceding fall in the vicinity of New York City and which is probably the same as Thompson’s very pubescent gall. Apparently the same gall was taken by L. H. Weld at Ithaca, N. Y., and at Evanston, IIl., judging from the photograph received. The original characterization of this species was drafted from an alcoholic specimen. The later descriptions are from recently reared material. The insects winter in the gall and REPORT OF THE STATE ENTOMOLOGIST 1918 107 in nature undoubtedly appear in early June. Several specimens of Paralellodiposis caryae Felt were also reared from this gall. Gall (pl. to, fig. 8, and pl. 8). Subglobular, about 2 to 3 mm in diameter, thin-walled, monothalamous and thickly clothed with rather long, erect, reddish brown aN or sometimes fuscous hairs. The clothing of the galls sometimes presents a somewhat whitish ap- pearance. They much resemble very small closed chestnut burrs. Larva. Length 2.5 mm, stout, whitish, the head small. An- tennae biarticulate; breastbone (fig. 12) long, slender, minutely bidentate, the excavation broadly rounded, the shaft reduced. The body tapers slightly to a broadly rounded, unarmed extremity. Exuvium. Length2mm. An- tennal cases short, hardly extend- ing to the base of the abdomen, the internal basal angles weakly chitinized. Cephalic horns rather long, stout at the base, slightly irregular. Wing and leg cases extending to the third abdominal segment, the dorsum of the segments margined with a rather thick band of four irregular rows of stout, chitinous spines, the remainder of the dorsal surface finely dotted with chitinous points. Male. Length 1.75 mm. Antennae nearly as long as the body thickly clothed with short hairs, pale orange yellowish; fourteen sessile segments, the fifth with a length about three times its diameter, the circumfila stout, the loops short, broad; terminal segment con- stricted near the basal third, with a length nearly four times its diameter, broadly rounded. Palpi; the first segment presumably rectangular, with a length more than twice its diameter, the second short, greatly reduced, the third expanded and more than twice the length of the second. Mesonotum fuscous yellowish, the submedian lines sparsely haired. Scutellum dark reddish, postscutellum fus- cous yellowish. Abdomen dark reddish, somewhat fuscous laterally; genitalia fuscous yellowish, fuscous apically. Wings hyaline, short, very broad, costa pale yellowish. Halteres and coxae pale orange; femora and tibiae pale yellowish, the tarsi pale yellowish, somewhat fuscous apically; claws long, slender, evenly curved, the pulvilli as long as the claws. Genitalia; basal clasp segment short, stout; terminal clasp segment somewhat reduced; dorsal plate long, broad, triangularly emarginate, the lobes broadly rounded; ventral plate long, broad, broadly and lightly emarginate. Female. Length 2 to 3 mm. Antennae extending to the third abdominal segment, sparsely haired, pale yellowish, reddish apically ; Fig. 12 Caryomyia thompsoni, breastbone of larva (enlarged, orig- inal) 108 NEW YORK STATE MUSEUM fourteen sessile segments, the fifth with a length three and one-half times its diameter; circumfila near the basal third and apically; terminal segment slightly produced, tapering, narrowly rounded. Palpi; first segment rectangular, with a length twice its diameter, the second a little shorter, stouter, the third twice the length of the second, slightly expanded. Ovipositor pale yellowish, the lobes protuberant, with a length three times their width, tapering, nar- rowly rounded. Type Cecid. 1116a, a1go8. Caryomyia tubicola O. 5S. 1862 Osten Sacken, C. R. Mon. Dipt. N. A., 1:192 (Cecidomyia) 1874 Glover, Townend. Ms. Notes My Jour. Dipt., pl. 11, fig. 25 (Cecidomyia) 1886 Hagen, H. A. Ent. Am., 1:229 (Cecidomyia) 1892 Beutenmueller, William. Am. Mus. Nat. Hist. Bul., 4:267 (Cecidomyia) 1904 ———————_ Am. Mus. Nat. Hist. Guide Leaflet 16, p. 27 (Cecidomyia) 1904 Cook, M. T. Ohio State Univ. Bul. 8, 13:141 (Cecidomyia) 1905 ———————_ Dep’t Geol. Nat. Res. Ind., 29th Rep’t, p. 840 (Cecidomyia) ; 1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:619, 628; pl. 1, fig. 10 (Cecidomyia) 1908 ——————_ NN Y. State Mus. Bul. 124, p. 388 (Hormomyia) 1909 Jarvis, T.D. Ent. Soc. Ont., 39th Rep’t, p. 84 (Cecidomyia) 1909 Felt, E. P. Econ. Ent. Jour., 2:293 1910 Stebbins, F. A. Springfield Mus. Nat. Hist. Bul. 2, p. 14 (Hormomyia) 1918 Felt, E.P. N. Y. State Mus. Bul. 200, p. 43, 47 This rather common, characteristic gall is rarely so abundant as some of the other deformities occurring on hickory leaves. The young galls of this species, according to the observa- tions of the late Dr M. T. Thompson, appear in late June or early July as nearly circular, yellowish or yellow- ish green blisters on the upper surface of the leaf. The presence of the develop- ing gall is marked on the Fig. 13 Caryomyia tubicola, group of under surface by a pale yel- galls on underside of leaf and several lowish color surrounded by stages shown below in profile (author’s 4g reddish, spongy growth illustration) : adorned with numerous rather long plant hairs. The characteristic, partly grown galls of this species may be observed in early August as minute, yellowish green or even blackish nipples REPORT OF THE STATE ENTOMOLOGIST 1918 10g protruding from the developing socket. The galls become full grown the latter part of August or early in September and drop to the ground, the larvae remaining therein till the following spring. Galls of this species, taken at East Schodack May 14, 1907, produced adults May 20th. This peculiar gall is common about New York City, the vicinity of Albany, has been received from Michigan and recorded from Ontario and also from Indiana. Polygnotus and Torymus species were reared from this insect. Gall. The full-grown gall is a hollow tube 4 to 5 mm long and 1 mm in diameter (fig. 13, and pl.8). The apex tapers rather suddenly and varies in color from greenish when young to brownish or even black when fully developed. These galls arise in characteristic sockets or pits. The partly developed galls differ from the full- grown ones mainly in length and are easily recog- nized on account of their resemblance to the more commonly observed form. These galls are occasion- ally abundant enough to produce a curling of the leaf, though as a rule they are somewhat scattering. Professor Cook, writing of this gall, states that it is very similar to that of C. holotricha except that the amount of tannin is not so great. The upper portion of the wall is much thicker : than either side of the lower wall, the point of at- Fig. 14 Cary- tachment is not so large, and the gall is protected omyia tubicola, by a growth, producing a cup-shaped cavity in breastbone of which it develops. The inner layers of cells are @tv@ (enlarged, ERS original) very rich in protoplasm. The cells are elongated with the long axis of the gall and fibrovascular bundles are more numerousthan in C. holotricha though very small. A more slender, similar appearing, though presumably different gall occurs occasionally on hickory leaves and has been described and figured by B. W. Wells in the Ohio Journal of Science, 16:53 (fig. 27), 1915. This gall is almost invariably slightly curved, tapers to a nearly acute point and the entire interior is hollow. Larva. Length 2 mm, stout, white, the head small; antennae small, biarticulate; breastbone (fig. 14) slender, unidentate, the tooth long, triangular, acute. Segmentation rather distinct, the skin nearly smooth, the posterior extremity broadly rounded. Male. Length 1.75 mm. Antennae nearly as long as the body, sparsely haired, pale yellowish; fourteen cylindric, subsessile seg- ments, the fifth (fig. 15) with a length about two and one-half times its diameter, a slight constriction at the basal third, the circum- I1o NEW YORK STATE MUSEUM fila stout, the loops short, broad; terminal segment slightly produced, with a length three times its diameter, tapering. Palpi; first seg- ment§with a length twice its diameter, the second a little stouter and shorter, the third more than twice the length of the second. Face fuscous yellowish. Mesonotum dark brown, the submedian lines rather thickly clothed with fuscous hairs, the posterior median area yellowish. Scutel- lum light yellowish red, postscutellum yellow- ish. Abdomen deep red, the basal segments and lateral margins fuscous; genitalia fuscous yellowish. Wings hyaline (pl. 15, fig. 4), costa pale yellowish, subcosta uniting there- with before the basal half. Halteres semi- transparent basally, pale yellowish apically. Legs a nearly uniform pale yellowish trans- parent; claws long, slender, strongly curved, the pulvilli longer than the claws. Genitalia; basal clasp segment short, stout; terminal clasp segment short, stout; dorsal plate short, broad, triangularly emarginate, the lobes roundly truncate; ventral plate long, broad, broadly and roundly emarginate, the lobes broadly rounded. Female. Length 1.5 mm. Antennae extending to the third abdominal segment, sparsely haired, pale yellowish orange, red- tinted apically; fourteen sessile segments, the fifth with a length two and one-half times its diameter, circumfila near the basal half and apically; terminal segment reduced, broadly conical. Palpi; first segment stout, subquadrate, the second more than twice the length of the third, narrowly oval, the third swollen distally, shorter and more slender, the fourth more than twice the length of the third, strongly constricted basally. Face pale yellowish orange. Mesono- tum yellowish brown, the submedian lines sparsely haired. Scu- tellum fuscous yellowish, fuscous laterally, postscutellum yellowish. Abdomen reddish orange; ovipositor pale yellowish. Halteres pale orange. Legs mostly a pale straw, the tarsi slightly darker; claws slender, strongly curved, longer than the pulvilli. Ovipositor short, the lobes protuberant, tapering, narrowly rounded. Cecid. ar4so. Fig. 15 Caryomyia tubicola, fifth antennal segment (enlarged, original) Caryomyia similis Felt 1909 Felt, E. P. Econ. Ent. Jour., 2:292 1918 ————— ‘NN. Y. State Mus, Bul: 200, p. 46 This species was reared the latter part of April and early in May from supposedly typical galls of Caryomyia caryae O.S. taken at Nassau, N. Y., September 16, 1908. The gall has been received from Michigan. An examination of the larva shows that it possesses a unidentate breastbone, while the male at least, differs markedly from that of typical caryae by the subsessile, nearly cylin- dric antennal segments. We are therefore constrained to erect a REPORT OF THE STATE ENTOMOLOGIST 1918 TU new species. It is probable that this form is widely distributed and has heretofore been confused with C. caryae, a name which has apparently been very loosely applied in the past. Gall. Irregularly subglobular, 2 to 4 mm in diameter, depressed and without the small nipple so frequently seen in C. caryae galls. The gall is sparsely clothed with a short, yellowish pubescence and has thin walls. Larva. Length 3 mm, stout, whitish, the head small; antennae short, stout; breastbone unidentate, the shaft somewhat thickened anteriorly and tapering posteriorly. Skin coarsely shagreened, posterior extremity broadly rounded. Male. Length 1.75 mm. Antennae nearly as long as the body, sparsely haired, reddish yellow, a variable carmine apically; fourteen subsessile, cylindric segments, the fifth with a length two and one- half times its diameter, the circumfila stout, the loops short, rather thick; terminal segment reduced, tapering, narrowly rounded. Palpi; first segment short, incrassate, the second rectangular, with a length four times its diameter, the third short, narrowly oval, the fourth one-half longer than the third. Mesonotum fuscous yellowish, the submedian lines sparsely haired. Scutellum reddish brown, postscutellum fuscous yellowish. Abdomen deep reddish orange, the segments sparsely margined posteriorly with fuscous setae; genitalia fuscous yellowish. Wings hyaline, costa dark brown. Halteres yellowish basally, fuscous apically. Coxae and legs a vari- able fuscous yellowish, the tarsi somewhat darker; claws rather stout, uniformly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment short, stout; terminal clasp segment rather short, slightly swollen; dorsal plate broad, narrowly emar- ginate, the lobes broadly rounded; ventral plate broad, broadly and roundly emarginate, the lobes broadly rounded. Female. Length 2.75 mm. Antennae extending to the third abdominal segment, sparsely haired, whitish transparent, a variable carmine apically; fourteen sessile segments, the fifth with a length two and one-half times its diameter, circumfil near the basal half and apically; terminal segment somewhat reduced, tapering. Palpi; first segment stout, second narrowly oval, the third a little longer, more slender, the fourth one-half longer than the third. Mesono- tum yellowish brown, the submedian lines sparsely haired. Scu- tellum fuscous yellowish, postscutellum lighter. Abdomen dark reddish orange; terminal segment and ovipositor fuscous yellowish. Halteres pale yellowish. Coxae and legs mostly fuscous yellowish; claws rather stout, strongly curved, the pulvilli as long as the claws. Ovipositor short, the terminal lobes protuberant, tapering, narrowly rounded. Cecid. a1g46. Caryomyia inanis Felt 1909 Felt, E. P. Econ. Ent. Jour., 2:292 _1918 N. Y. State Mus. Bul. 200, p. 46 The inhabitant of this peculiar subglobular gall, easily recognized by the more or less well-developed empty chamber above the II2 NEW YORK STATE MUSEUM inhabited cavity, was reared April 29, 1909 from hickory leaf galls taken at Nassau, N. Y., September 16, 1908. This gall appears identical with what the late Dr M. T. Thompson of Clark University, Worcester, Mass., termed a ‘‘ double decker.’”’ The gall, according to his notes, first appears as a brownish, blistered area on the leaf, with a slight central point. As the gall develops the epidermis over the blistered area is lifted and borne on the top of the deformity like a cap. The gall in this stage is hemispherical, with the flat top covered by an epithelial plate and is attached by a point on the convex under surface. The rim of the gall is then slightly raised, forming a low wall around the top area. This rim may continue to grow at several points and the developing tissues bend inward till they meet and inclose a sort of upper chamber above the real top of the gall. The larva lives in the large chamber beneath. The adult issues through an irregular hole near and a little to one side of the base. Doctor Thompson reared from this gall Clinodiplosis caryae Felt, presumably an inquiline, as well as a Caryomyia. Gall. Irregularly subglobular, diameter 2 to 3 mm, monothala- mous, easily recognized by the more or less complete false chamber at the tip of the gall. This sometimes is represented simply by a few irregular ridges and in other specimens appears much as though the rapidly developing tissues had collapsed owing to some accident. The gall is green or brownish and is attached by a slender, short stem. Exuvium. Length 3 mm, whitish, the antennal sheaths short; terminal segment very strongly reduced, conical, the internal basal angles slightly chitinized. Cephalic horns rather short, stout. Wing and leg cases extending to the third abdominal segment, the dorsum of the latter broadly margined with three or four irregular rows of stout, chitinous spines and with the intervening space thickly covered with chitinous points. Female. Length 3mm. Antennae extending to the third abdom- inal segment, sparsely haired, pale yellowish orange, the terminal segments tinted with carmine; fourteen sessile segments, the fifth with a length two and one-half times its diameter; circumfila irregular, near the basal third and apically; terminal segment somewhat reduced, tapering, narrowly rounded. Palpi; first segment sub- quadrate, the second subglobose, the third rectangular, with a length more than twice its diameter, the fourth one-half longer, somewhat dilated. _Mesonotum shining fuscous yellowish, the submedian lines sparsely haired. Scutellum reddish brown, post- scutellum deep orange. Abdomen deep red, the segments sparsely margined with fuscous hairs; ovipositor yellowish. Wings hyaline, rather long, costa light straw. Halteres pale orange. Coxae and femora mostly pale yellowish; tibiae slightly fuscous, the tarsi fuscous yellowish; claws slender, evenly curved, the pulvilli as long as the REPORT OF THE STATE ENTOMOLOGIST 1918 113 claws. Ovipositor short, the terminal lobes somewhat protuberant? tapering, broadly rounded. Type Cecid. aro 50. Caryomyia persicoides Beutm. 1862 Osten Sacken, C.R. Mon. Dipt. N. A., 1: 193 (Cecidomyia) 1892 Beutenmueller, William. Am. Mus. Nat. Hist. Bit 4-267 (Cecidomyia) 1904 —— Am. Mus. Nat. Hist. Guide Leaflet 16, p. 28 (Cecidomyia) 1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:619, 628, pl. 1, fig. 9 (Cecidomyia) 1907 Beutenmueller, William. New Species of Gall Producing Cecido- myiidae, Amer. Mus. of Nat. Hist. Bul., 23:393 (Cecidomyia) 1909 Jarvis, T.D. Ent. Soc. Ont., 39th Rep’t, p. 84 (Cecidomyia) 1910 Cook, M. T. Mich. Geol. & Biol. Surv., Pub. 1, Biol. Ser. 1, paast (Cecidomyia) 1910 Stebbins, F, A. Springfield Mus. Nat. Hist. Bul. 2, p. 13 (Cecidomyia) 1918 Felt, E.P. N.Y. State Mus. Bul. 200, p. 46 The gall only of this insect was briefly characterized by Osten Sacken in 1862. Other writers have been content to rest their identifications upon this brief characterization till Professor Beu- tenmueller described the larva in 1907. This gall insect appears to be widely distributed. It occurs rather commonly in the vicinity of New York City, about Albany and has been recorded by Jarvis from Ontario. Gall. This is a rather large, irregular, monothalamous, hairy gall frequently 6 or 7 mm in diameter and usually clustered along the midrib. It may be distinguished from C. holotricha by the larger size, the shorter, curly hairs and the thicker walls. It turns to a variable brown or reddish brown in the fall. Larva. Length 2 to 3 mm, stout, whitish. Breastbone rather stout, unidentate, the tooth rather long, narrow, the shaft somewhat expanded anteriorly and posteriorly. This breastbone differs some- what from that described by Beutenmueller though it is very probable that the two are specifically identical. Exuvium. Length 2.75 mm, whitish transparent. Antennal cases short, extending to the second abdominal segment, slightly chitinized at the internal basal angles: Cephalic horns rather slender, short. Wing and leg cases extending to the third abdominal segment, the latter thickly margined with a band composed of four or five irregular rows of stout spines, the posterior spines markedly longer, the remainder of the dorsal surface rather thickly dotted with chitinous points. Female. Length 3 mm. Antennae extending to the second abdominal segment, sparsely haired, reddish; fourteen sessile seg- ments, the fifth with a length three and one-half times its diameter; circumfila near the basal third and apically. Palpi; first segment short, irregularly quadrate, the second short, very broadly oval, the third a little longer, rectangular, the fourth twice the length of 114 NEW YORK STATE MUSEUM the third, dilated. Mesonotum dull black. Scutellum and post- scutellum deep orange. Abdomen deep red, the terminal segment fuscous yellowish; ovipositor yellowish. Wings hyaline, long, slender, costa reddish. Halteres fuscous yellowish. Legs yellowish and variably tinged with deep red; claws stout, strongly curved, the pulvilli nearly as long as the claws. Ovipositor short, the terminal lobes slightly protuberant, short, tapering, narrowly rounded. Cecid. a1g41a. Caryomyia caryaecola n. sp. 1862 Osten Sacken, C.R. Mon. Dipt. N. A., 1:192 (Cecidomyia) 1892 Beutenmueller, William. Am. Mus. Nat. Hist. Bul, 4:266 (Cecidomyia) 1904 ——-———_ Am. Mus. Nat. Hist. Guide Leaflet 16, p. 27 (Cecidomyia) 1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:619, 628, pl. 1, fig. 28 (Cecidomyia) 1907 Cook, M.T. Acad. Sci. Proc., separate, p. 7 (Cecidomyia) 1908 Jarvis, T. D. Ent. Soc. Ont., 38th Rep’t, p. 87 (Cecidomyia) 1909 Jarvis, T. D. Ent. Soc. Ont., 39th Rep’t, p. 84 (Cecidomyia) 1910 Stebbins, F. A. Springfield Mus. Nat. Hist. Bul. 2,p.13 1915 Felt, E.P. N.Y. State Mus. Bul. 175, pl. 4, fig. 9 1918 ——————__N. Y. State Mus. Bul. 200, p. 43 Galls, made by the above-named species, were taken on bitternut hickory at Hamburg, N. Y., October 17,1907. They were limited, so far as we observed, entirely to the bitternut hickory (Carya cordi- formis). Apparently the same species has been recorded by Jarvis as being locally common in Ontario on sweet hickory (Carya alba). Specimens gathered in the fall would presumably produce adults the following June, there being apparently one generation annually. The earlier bibliographic references cited above pre- sumably refer to this species. The gall described below agrees very closely with specimens collected by Osten Sacken, deposited in the Museum of Comparative Zoology at Cambridge, Mass., and bearing the label Cecidomyia caryaecola. Gall. The galls (pl. ro, figs. 2, 3) were almost invariably clustered, usually thickly, along or close to the midrib; three to eight or ten in a group, and sometimes two or three clusters on the underside of one leaf. The gall is subglobular, about 3-4 mm in diameter and almost invariably with a long, slender apical process as long or a little longer than the basal enlargement. The color in late fall is a pale greenish, the elongate tip being a variable dark reddish brown. The gall matures in October and drops from the leaves readily. This gall is presumably distinct from the one appearing under the name of Caryomyia caryaecola O.S. in “‘ Key to American Insect Galls,”” N. Y. State Museum Bulletin 200, p. 43 and plate 6, figs. 2, 2519 LS: REPORT OF THE STATE ENTOMOLOGIST 1918 115 Larva. Length 2.5 mm, rather stout, pale orange. Head small; antennae short, stout, probably biarticulate; breastbone rather slender, unidentate, the tooth being long and narrowly triangular; segmentation rather distinct, the skin very finely shagreened; posterior extremity broadly rounded, the dorsal surface rather coarsely papillate. Caryomyia cynipsea ©. S. 1862 Osten Sacken, C.R. Mon. Dipt. N. A., 1:193 (Cecidomyia) 1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:718 (Cecidomyia) 1918 N. Y. State Mus. Bul. 200, p. 47 This species, according to Osten Sacken, makes a rounded, irregular, pale yellowish, hard swelling about one-half of an inch long on the underside of the midrib of the hickory leaf. The larvae observed by him in July were in small cavities, minute, whitish with the breastbone narrowing anteriorly to a point. Caryomyia glutinosa O. 5S. 1862 Osten Sacken, C.R. Mon. Dipt. N. A., 1:193-94 (Cecidomyia) 1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:718 (Cecidomyia) 1918 ———— N. Y. State Mus. Bul. 200, p. 47 This small, yellowish orange larva is widely distributed though somewhat rare. It is provisionally referred to the above-named genus, since it appears to be a typical hickory insect and is presumably en eee a 6 Fig. 16 Caryomyia glutinosa; a, head of larva; b, breastbone of larva (enlarged, original) more closely allied to the varied forms making the diverse gall than to other species. This unique larva is remarkable in that it forms no gall but lives on the underside of the leaf, attached thereto by a 8 116 NEW YORK STATE MUSEUM viscid secretion. The presence of the larva is indicated on the upper surface by an irregular, yellowish, brown-margined elevation. Fig. 17 Caryomyia glutinosa, anterior segments of larva (much enlarged, original) There is a corresponding depression on the under surface, the latter having a diameter of about 3 mm. Fig. 18 Caryomyia glutinosa, posterior extremity of larva (much enlarged, original) REPORT OF THE STATE ENTOMOLOGIST 1918 117 _ Larva. Length 3 mm, stout, yellowish. Head (figs. 16a, 17) moderate size, roundly triangular, the antennae rather stout, biarticu- late. Breastbone (fig. 16b) greatly reduced, there being only a narrowly triangular, chitinous process apically. Body with the skin smooth, the segmentation rather distinct, each segment bearing an irregular, transverse row of rather stout, chitinous spines, the latter having a length nearly equal to that of the segment and laterally arranged in pairs. Posterior extremity (fig. 18) irregularly rounded, the posterio lateral angles each with groups of four short, stout, transparent spines. Cecid. a1547. Caryomyia nucicola O. S. 1870 Osten Sacken, C.R. Am. Ent. Soc. Trans., 3:53 (Cecidomyia caryae nucicola) 1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:718 (Cecidomyia) 1907 Jarvis, T. D. Ent. Soc. Ont., 37th Rep’t, p. 68 (Cecidomyia) 1909 Ent. Soc. Ont., 39th Rep’t, p. 84 (Cecidomyia) 1918 Felt, E.P. N.Y. State Mus. Bul. 200, p. 49 This species infests the green husks of the nuts of shell-bark hickory, Carya ovata, producing swellings and giving them an irregular appearance. The husk is so badly deformed occasionally as to burst open, leaving the nut uncovered even when very immature, portions of the husk forming wartlike swellings on the basal portion of the nut. This gall was taken by Baron Osten Sacken August 9, 1860 near Rhinebeck, N. Y. On examination the husks were found to contain small, round cavities, often two or three together, each inhabited by pale reddish larva. The latter has a breastbone “ distinctly elongated, narrow, its branches short and square, ending in sharp angles anteriorly, instead of being rounded; the emargina- tion between them broad and deep.’ The posterior extremity of the body is smooth. This species has been recorded from Ontario, Canada, by Jarvis. Caryomyia sp. A number of irregular, dull greenish black margined or black blister galls (pl. 9) with a diameter about 3 mm, distinctly elevated on both the upper and under surface of the leaves and with a small nipple were variably scattered about the midrib and in some cases several were confluent. These specimens were taken at Nassau, N. Y., October 3, 1907. No adults were reared and the above generic reference is tentative. 118 NEW YORK STATE MUSEUM GIARDOMYIA Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 405 1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:287 1911 Felt, E.P. N. Y. Ent. Soc. Jour., 19:59 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 230 This genus is erected for certain species presenting marked dif- ferences from Octodiplosis Giard. It comprises a number of small, yellowish or reddish forms having the simple claws bent almost at right angles and usually somewhat enlarged subapically. The ventral plate is long, slender, slightly expanded apically and roundly emargi- nate, while the dorsal plate is short, triangularly emarginate and with the somewhat long lobes broadly rounded or truncate. The type species is G. photophila Felt (pl. 38, fig. 2, Bul. 124). Key to Species a Abdomen yellowish b Abdomen pale yellowish, length .75 mm, the fifth antennal segment having the stems two and one-half and three and one-half times their diameter; presumably reared from a pustulate gall on Mentha........ menthae Felt, C. a1578b, 536 bb Abdomen fuscous yellowish, length 1 mm; fifth antennal segment having the stems three and four and one-half times their diameters...... noveboracensis Felt, C. 197x aa Abdomen reddish b Abdomen bright carmine, length 1 mm; fifth antennal segment having the stems three and four and one-half times their diameters.... photophila Felt, C. 323 bb Abdomen bright red; terminal segments yellowish, length 1 mm; fifth antennal segments having the stems with a length three and three and one-half times their diameters, the ventral plate deeply and narrowly emarginate!|jerpices Jeune. Sees Dee tee emarginata Felt, C. 446 bbb Abdomen deep reddish, length 1 mm; fifth antennal segment having the stems two and one-half and four times their diameters.............. hudsonica Felt, C. 200 bbbb Abdomen dark reddish brown, length 1 mm; fifth antennal segment having the stems two and one-half and three and one-half times their diameters... 2. ..n(4. SUSE montana Felt, C. 325, 585 Giardomyia menthae Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 405 1918 ——————__N. Y. State Mus. Bul. 200, p. 184 This yellowish male was reared July 27, 1907, from mint, Mentha canadensis, bearing pustule-like stem galls collected at Karner¥ NS. Gall. Length 3.5 mm, diameter 2.5 mm. This is a pustule-like gall in the axil of the leaf and contains several whitish larvae. Larva. Length 1 mm, whitish. REPORT OF THE STATE ENTOMOLOGIST 1918 I19 Male. Length .75 mm. Antennae a little longer than the body, thickly haired, light straw, yellowish basally; fourteen segments, the fifth with stems two and one-half and three and one-half times their diameter respectively; terminal segment, distal enlargement pro- duced, with a length over twice its diameter and tapering to a sub- acute apex. Palpi; first segment short, subquadrate, the second narrowly oval, with a length twice its diameter, the third longer, slender, the fourth one-fourth longer than the third, dilated. Face pale yellowish. Thorax a light salmon, the sides yeJlowish. Abdo- men pale yellowish, the genitalia fuscous apically. Wings hyaline, costa pale yellowish; membrane tinged with yellowish; halteres yellowish transparent. Legs pale yellowish, the distal segments slightly fuscous; claws slender, strongly curved and slightly enlarged near the middle, the pulvilli shorter than the claws. Genitalia; basal clasp segment rather long; terminal clasp segment swollen basally, long; dorsal plate broad, narrowly and triangularly emar- ginate, the lobes irregularly rounded; ventral plate long, broad, narrowly and triangularly emarginate. Type Cecid. a1578b. Giardomyia noveboracensis Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 405 This fuscous yellowish male was taken June 10, 1906, at Nassau ING Y* Male. Length rmm. Antennae fully twice as long as the body, rather thickly clothed with fine hairs, light brown, the stems prob- ably whitish; fourteen segments, the fifth with stems three and four and one-half times their diameters respectively; terminal segment, basal portion of the stem and the distal enlargement slightly pro- longed, the latter subcylindric and with a long, spindle-shaped apex. Palpi; the first segment subquadrate, swollen distally, the second one-half longer than the preceding, narrowly oval, the third a little longer and the fourth still longer than the preceding; face pale yellowish. Mesonotum dark brown, the yellowish submedian lines sparsely clothed with light hairs. Scutellum pale orange, postscu- tellum fuscous orange. Abdomen fuscous yellow, rather thickly clothed with yellowish hairs, genitalia yellowish. Wings hyaline, costa reddish brown; halteres whitish transparent. Legs nearly uniform pale straw; claws rather stout, evenly curved, simple. Genitalia; basal clasp segment long, stout; terminal clasp segment greatly swollen at the base; dorsal plate broad, deeply and tri- angularly incised, the lobes obliquely truncate; ventral plate broad, long, tapering, broadly rounded. Type Cecid. 197x. Giardomyia photophila Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 134; separate, p. 37-38 (phosphila) 1908 ——————_N. Y. State Mus. Bul. 124, p. 405 This bright carmine male was taken June 16, 1906, in a trap lantern at Newport, N. Y. 120 NEW YORK STATE MUSEUM Male. Length 1 mm. Antennae fully one-half longer than the body, thickly clothed with coarse setae, dark brown; fourteen seg- ments, the fifth (fig. 19) with stems three and four and one-half times their diameters respectively; the terminal segment, basal enlargement somewhat flattened, the basal portion of the stem produced, the distal enlargement produced, subcylindric and bearing Fig. 19 Giardomyia photophila, fifth antennal segment of male (en- larged, original) a slender, spindle-shaped appendage about three-fourths its length. Palp1; probably consisting of four segments. Mesonotum yellowish brown, submedian lines indistinct, sparsely clothed with fine setae. Scutellum reddish brown with sparse apical setae, postscutellum dark brown. Abdomen bright carmine, rather thickly clothed with fine, yellowish setae. Wings (pl. 16, fig. 4) hyaline, costa pale straw, membrane sparsely clothed with fine setae; halteres yellowish transparent basally, reddish fuscous apically. Legs a nearly uniform reddish brown; claws long, slender, bent at nearly right angles, simple. Genitalia (pl. 19, fig. 7); basal clasp segment rather long, a subtriangular lobe basally; terminal clasp segment swollen at the base; dorsal plate broad, deeply and triangularly incised, the lobes broadly rounded distally; ventral plate stout, swollen at the basal third, tapering, broadly emarginate. Type Cecid. 323. Giardomyia emarginata Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 405 The bright-red male has the terminal segments yellow. It was taken July 2, 1906 in a trap lantern at Newport, N. Y. REPORT OF THE STATE ENTOMOLOGIST 1918 I2I Male. Length 1 mm. Antennae longer than the body, thickly haired, light brown; fourteen segments, the fifth with stems three and three and one-half times their diameters respectively; terminal segment, basal enlargement subglobose, the basal portion of the stem with a length four times its diameter, the distal enlargement subcylindric, with a length three and one-half times its diameter, apically a slender, tapering process. Palpi; the first segment irregu- larly cylindric, with a length one-half greater than its diameter, the second segment with a length about four times its diameter, tapering, the third about as long as the second, more slender, the fourth a little longer than the third, somewhat dilated; face fuscous yellowish. Mesonotum dark brown, the narrow submedian lines yellowish, sparsely haired. Scutellum fuscous yellowish, post- scutellum a little darker. Abdomen rather bright red, the terminal segments yellow, each margined posteriorly with fuscous, rather coarse yellowish hairs. Wings hyaline, costa light brown. Halteres yellowish basally, fuscous apically. Legs a nearly uniform light straw; claws long, slender, evenly curved, the pulvilli about two- thirds the length of the claws. Genitalia; basal clasp segment long, slender, a subtriangular process at the internal basal third; terminal clasp segment long; dorsal plate long, broad, deeply and triangularly incised, the lobes obliquely truncate; ventral plate long, slender, broadly and triangularly incised, the lobes subtriangular. Type Cecid. 446. Giardomyia hudsonica Felt 1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 406 This deep reddish male was taken June 9, 1906 in a trap lantern at Poughkeepsie, N. Y. Male. Length 1 mm. Antennae about twice as long as the body, rather thickly haired, light brown; fourteen segments, the fifth with stems two and one-half and three and one-half times their diameters respectively; terminal segment, the distal enlargement cylindric, with a length four times its diameter, apically with a long, slender, tapering process. Palpi; the first segment short, stout, with a length about twice its diameter, the second with a length nearly four times its diameter, the third a little shorter and more slender, and the fourth a little longer than the third and more dilated; face yellowish. Mesonotum dark reddish brown, the yellowish submedian lines sparsely haired. Scutellum dull orange, post- scutellum and abdomen dark reddish. Genitalia yellowish. Wings hyaline, venation probably as in allied forms. Halteres fuscous reddish, yellowish transparent basally. Legs a nearly uniform dark straw; claws stout, curved nearly at right angles, slightly swollen subapically, pulvilli about two-thirds the length of the claws. Geni- talia; basal clasp segment long, slender, a lobe at the internal distal third; terminal clasp segment long; dorsal plate long, deeply and triangularly emarginate, the lobes broad, subrectangular; ventral plate long, slender, slightly expanded distally, broadly emarginate 122 NEW YORK STATE MUSEUM and with inconspicuous submedian setose tubercles, the lateral angles slightly produced. Type Cecid. 200. Giardomyia montana Felt 1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 406 This dark reddish male was taken June 16, 1906 in a trap lantern ° at Newport, N. Y., and similarly captured July 14th at Huguenot Park, Staten Island, N. Y. Male. Length 1mm. Antennae probably longer than the body, sparsely haired, dark brown; fourteen segments, the fifth with stems two and one-half and three and one-half times their diameters respectively. Palpi; the first segment subquadrate, swollen distally, the second, third and fourth, each subequal and successively more slender; face sooty yellow. Mesonotum dark brown, submedian lines yellow, each sparsely clothed with fine setae. Scutellum yel- lowish brown with sparse apical setae, postscutellum dark yellowish. Abdomen dark reddish brown with the basal and terminal segments yellowish, rather thickly yellow haired. Wings hyaline, costa reddish brown; halteres pale yellowish basally, fuscous apically. Legs a nearly uniform dark brown, lighter ventrally; claws rather long, bent at nearly right angles, simple. Genitalia (pl. 20, fig. 1); basal clasp segment stout, an angulate lobe at the distal third; terminal clasp segment swollen at the base, long; dorsal plate broad, deeply and narrowly incised, the lobes irregularly truncate; ventral plate swollen at the base, slender at the distal fourth, expanding apically, broadly emarginate, setose. Type Cecid. 325. HYPERDIPLOSIS Felt 1908 Felt, E. P. N.Y. State Mus. Bul. 124, p. 405 1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15: 286 1911 Felt, E. P. N. Y. Ent. Soc. Jour., 19:59 1913 Kieffer, J: J. Gen. Insect., fasc. 152; p. 211 This genus was erected for certain small, yellowish species with simple claws bent at nearly right angles and a very long, broad, very deeply and broadly emarginate ventral plate with long, slender, more or less divergent lobes. The dorsal plate is short, deeply and roundly emarginate, the lobes being broadly and roundly emarginate and with the lateral and internal angles produced and setose. The typeas ‘Cecidomy1a,lobata Pelt. The type species was captured on white clover and possibly lives upon fungus, since H. fungicola Felt was reared from a fungus on nectarine. Key to Species a Ventral plate with the long, slender lobes diverging b Antennae light brown; legs pale brown c Palpi rather stout; claws bent at right angles, hardly swollen; dorsal platemvenyiShottem tut | Sennen lobata Felt, C, 132 REPORT OF THE STATE ENTOMOLOGIST 1918 123 cc Palpi slender; claws bent at less than a right angle, distinctly swollen subapically; dorsal plate nearly as long as the ventral plate....... coffieae Felt, Ci2133 bb Antennae white; legs yellowish white. Reared from fungus on nectarine. . fungicola Felt, C. 977 aa Lobes of ventral plate parallel or nearly so, rather stout b Antennae yellowish; legs fuscous yellowish, lobes of the ventral plate with a length equal to the width of the emargination; reared from a green, conical gall on Eupatorium............ eupatorii Felt, C. a2116 bb Antennae light brown, legs pale yellowish, lobes of the ventral plate with a length equal to over twice the width of the emargination; reared from the partly decayed branch of wild fig. ..................--+08 americana Felt, C. a2177a bbb Antennae light brown, legs mostly straw color, lobes of the ventral plate with a length over twice the width of the emargination............... bryanti Felt, C. 1428 Hyperdiplosis lobata Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 136; separate, p. 39 (Cecidomyia) 1908 —————__N Y. State Mus. Bul. 124, p. 405 This yellowish brown male was taken June 4, 1906 on white clover, mrirolaum repens at Karner, NY: Male. Length 1 mm. Antennae one-half longer than the body, sparsely haired, light brown; fourteen segments, the fifth (fig. 20a) Fig. 20 Hyperdiplosis lobata: a, fifth antennal segment of male; 6, terminal antennal segment of male, circumfila should be represented, though they are short and indistinct; c, palpus of male (enlarged, original) with stems each with a length thrice their diameters; the distal enlargement is about one-half longer than the subglobose basal one, slightly constricted at the basal third, dilated at the distal third; subbasally and subapically short, indistinct circumfila; between a 124 NEW YORK STATE MUSEUM sparse whorl of long, slender, curved setae, the loops of the basal circumfilum scarcely extending to the middle of this enlargement, those of the distal hardly beyond its apex; terminal segment (fig. 20b) with the basal enlargement subglobular, separated from the pro- longed distal swelling by a short, slender stem, the latter with the basal two-thirds cylindric, slightly constricted at the distal third, the terminal portion slender, subconical. Palpi (fig. 20c); the first segment broadly and irregularly oval, the second a little longer, stouter, the third a little longer and more slender than the second, and the fourth a little longer than the third; face yellowish brown, eyes large, black. Mesonotum a variable reddish brown, lighter posteriorly, submedian lines yellowish. Scutellum yellowish, post- scutellum and abdomen pale yellowish brown. Wings hyaline, costa light brown, the third vein joins the margin well beyond the apex; halteres yellowish transparent basally, fuscous apically. Legs pale brown, tarsi slightly darker; claws slender, very strongly bent, almost forming a right angle, simple. Genitalia; basal clasp seg- ment stout, slightly produced at the internal basal third, excavated at the distal third; terminal clasp segment stout, tapering, a heavy apical spur; dorsal plate broad, deeply and roundly emarginate, the lobes with a greatly prolonged latero-posterior process, curving therefrom to a minor submedian process, the angles with long, stout setae; ventral plate slender, deeply and roundly emarginate, the lobes slender. Harpes long, slender, apparently consisting of two slender, chitinous processes extending along the slender lobes of the ventral plate. Type Cecid. 132. Hyperdiplosis coffeae Felt 1911 Felt, E. P. Ent. News, 22:305 The midge was reared February 3, 1911 by W. H. Patterson, St Vincent, W. I., from the fruits of the Liberian coffee tree, Coffea liberica. It is tentatively referred to this genus, although the claws are less strongly bent, and the circumfila are more produced than in other species placed in this group. Hyperdiplosis fungicola Felt 1911 Felt, E. P. Econ. Ent. Jour., 4:552-53 This delicate, yellowish species was reared in August 1897 from larvae on the outside of a nearly rotten, fungus affected nectarine received at the bureau of entomology from Mrs R. B. Tenney, Washington, D. C. It is closely allied to H. lobata Felt from which it is most easily separated by colorational characters. Larva. Length 1.5 mm, moderately stout, tapering anteriorly, pale yellowish. Head moderate, tapering, broadly rounded distally. Antennae stout, with a length three times the diameter; breastbone wanting. Skin coarsely shagreened, each segment laterally with a stout seta near the middle; posterior extremity subtruncate, with REPORT OF THE STATE ENTOMOLOGIST 1918 I25 stout setae laterally near the posterior fourth. At the posterior lateral angles there is a stout, curved, conical process and just mesially a similar smaller process. Hyperdiplosis meibomifoliae Beutm. 1907 Beutenmueller, William. Can. Ent., 39:306 1918 Felt, E.P. Am. Mus. Nat. Hist. Bul., 38:181 gts: /—————— N. Y. State: Mus: Buli 200; p: 155 The small, pale orange midges were reared from a bud gall, pre- sumably loose, on tick treefoil, Desmodium species. Owing to the condition of the type material it was possible to prepare a detailed description of the female only. Hyperdiplosis eupatorii Felt 191t Felt, E.P. Ent. News, 22:110-11 The species was reared by W. H. Patterson, St Vincent, W. I. from a green, conical gall with a length of about 4 mm, and a diameter of 1.5 mm, on the upper surface of the leaves of Eupatorium, the insects pupating within the deformity. It is provisionally referred to Hyperdiplosis because of the reduced circumfila and the deeply and roundly excavated ventral plate. The antennal stems of the typical Hyperdiplosis are more produced and the claws more gtrongly bent than in this West Indian form. Hyperdiplosis americana Felt 191t Felt, E. P. N. Y. Ent. Soc. Jour., 19:192 The small, pale midges were reared in numbers from a section of dead, partly decayed wild fig branch collected by E. A. Schwarz at Paraiso, Panama, and forwarded to this office by H. S. Barber under date of May 15,1911. The adultsappeared from the 31st of May until early in June. This species is allied to the somewhat aberrant H. eupatorii Felt and can not be considered typical of the genus. It is easily recognized by the very greatly produced, slender lobes of the ventral plate. Hyperdiplosis producta Felt 1912 Felt, E. P. Ent. News, 23:177 1918 ——————._N. Y. State Mus. Bul. 200, p. 182 The midge was reared presumably from mite galls in the inflorescence of Stachytarpha collected by W. H. Patterson, St Vincent, W. I. Hyperdiplosis bryanti Felt 1913 Felt, E. P. Psyche, 20:146 The small yellowish male was taken in August 1907 by Mr Owen Bryant at North Adams, Mass. It is allied to H. americana 126 NEW YORK STATE MUSEUM from which it may be easily separated by differences in the color of the legs and in the emargination of the ventral plate. METADIPLOSIS Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 406 1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:285 1911 Felt, E.P. N.Y. Ent. Soc. Jour., 19:59 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 211 The genus is easily distinguished from the ordinary type of Itonid by the unique genitalia, the basal clasp segment being short, stout, broadly rounded and with conspicuous triangular, chitinous pro- cesses at the internal angles, while the terminal clasp segment is short, greatly constricted near the middle, enormously swollen and recurved apically. Type and sole species, Metadiplosis spinosa Felt. Metadiplosis spinosa Felt 1908 Felt, E. P. N.Y. State Mus. Bul. 124, p. 406 The unique male characterized below was taken July 14, 1906 on quack grass, Agropyron repens, at Albany, N. Y. Male. Lengthi1mm. Antennae one-fourth longer than the body, thickly haired, dark brown, the basal segments reddish; fourteen Fig. 21 Metadiplosis spinosa: a, fifth antennal segment of male, setae not sketched in; b, palpus of male (enlarged, original) segments, the fifth (fig. 21a) with stems three and three and one-half times their diameters respectively. Palpi (fig. 21b); the first segment short, stout, subrectangular, the second twice the length of the first, stout, the third a little longer and more slender than the second REPORT OF THE STATE ENTOMOLOGIST 1918 127 and the fourth one-half longer and more slender than the third; face reddish brown, eyes black. Mesonotum dark brown, the submedian lines indistinct. Scutellum reddish yellow, postscutellum reddish brown. Abdomen light reddish brown, rather thickly clothed with pale setae and _ slightly fuscous distally. Wings hyaline, costa yellowish brown, the third vein joining the margin well beyond the apex; halteres yellowish basally, semi-transparent apically. Legs a nearly uniform dark brown; claws (fig. 22) long, slender, evenly curved, Fig. 22 Metadiplosis spin- simple, the pulvilli about one-third the osa, claw (enlarged, original) length of the claws. Genitalia; basal clasp segment short, stout, truncate and at each internal distal angle a long, stout, chitinous spine; terminal clasp segment short, greatly constricted near the middle, enormously swollen and recurved apically; dorsal plate short, broad, deeply and rather narrowly incised, the lobes narrowly rounded; ventral plate slender, tapering, Subacute. Type Cecid. 573. EPIDIPLOSIS Felt 1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 406 1910 Rubsaamen, E.H. Zeitsch. Wissenschaft. Insektenbiol., 15:285 torr Felt, E.P. N. Y. Ent. Soc. Jour., 19:59 This genus is erected for a species remarkable because of the enormously produced, curved, setose-bearing spine on the basal clasp segment, this peculiar organ being nearly as long as the ter- minal clasp segment and strongly suggesting the genitalic modifica- tion we find in Lobodiplosis. It is, however, readily separable from this last named genus by the simple claws. Type and sole species, Epidiplosis sayi Felt, C. 429 Epidiplosis sayi Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 406-7 This interesting form was taken July 1, 1906 on a window at Nassau, N. Y. Male. Length .6 mm. Antennae twice as long as the body: sparsely haired, light brown, yellowish basally; fourteen segments: the fifth with stems two and two and one-half times the diameter respectively. Palpi; the first segment probably short, subquadrate, the second long, stout, tapering at each extremity, the third two- thirds the length of the preceding, narrowly oval, the fourth one- half longer than the third, slender; face fuscous yellowish. Mesono- tum fuscous brown, submedian lines narrow. Scutellum reddish brown, postscutellum yellowish, basal and terminal abdominal seg- ments yellowish orange, the third, fourth and fifth white, sparsely 128 NEW YORK STATE MUSEUM haired. Wings (pl. 16, fig. 3) hyaline, costa light brown; halteres yellowish transparent. Legs nearly uniform dull brown; claws rather stout, strongly curved near the middle, the posterior at least, simple. Genitalia (pl. 19, fig. 6); basal clasp segment very short, broad, the ventral margin produced as a long, curved process bearing a long, stout seta apically; terminal clasp segment swollen at the base; dorsal plate broad, deeply and triangularly incised, the lobes roundly tapering, obtuse; ventral plate broad, broadly rounded. Type Cecid. 429. LESTODIPLOsSIS Kieff. Leptodiplosis Kiefi. Coprodiplosis Kieff. sub. gen. 18 4. Kieffer, J. J. Soc. Ent. Fr. Bul., 63:280 (Leptodiplosis) 1894 ————— Fuielle Jeun. Natural., 24:84 (Coprodiplosis) 1895 —————— Soc. Ent. Fr. Bul., p. 193 1896 ————— Wien. Ent. Zeit., 15:93, 97 1897 ————— Syn. Cecid. de Eur. & Alg., p. 38-39 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 407 1910 Rubsaamen, E.H. Zeitsch. Wissenschaft. Insektenbiol., 15:285 Ig1t Felt, E.P. N. Y. Ent. Soc. Jour., 19:59-60 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 195 This genus, according to Kieffer, usually differs from Clinodiplosis by the spotted wings and the form of the male genitalia, the latter having the dorsal plate composed of two rounded lobes as long or Fig. 23. Lestodiplosis species: a, dorsal view of head and anterior body segment of larva; 6, breastbone (enlarged, original) REPORT OF THE STATE ENTOMOLOGIST 1918 T29 shorter than the rounded ventral plate. The females of some species have hyaline wings and Kieffer is unable to distinguish them from those of Clinodiplosis, except by the reddish color of the abdomen and the fuscous spot at its base. The subgenus Coprodiplosis Kieff. may be separated from the typical Lestodiplosis by the hyaline wings. The larvae, according to Kieffer, are zoophagous, subsisting upon the larvae of Cecidomyiids, Mycetophilids and Xylophagids. He has observed them living upon the larvae of Rhopalomyia tanaceticola. This record of zoophagous habits is confirmed by the rearings of American species, since members of this genus were obtained from a wide variety of galls and the larvae evidently subsisted upon Itonids, other small insects or acarids. See figures 23, 24 for the general characteristics of these larvae. The genus, as recognized by us, is easily separated from all other Itonids by the very characteristic triangular lobe at the base of the slender basal clasp segment. The dorsal plate is usually short and rather deeply and triangularly emarginate, the lobes being narrow, Fig. 24 Lestodiplosis species, dorsal view of posterior segments of larva (enlarged, original) parallel and broadly rounded, while the ventral plate is long, rather broad and narrowly rounded apically. Species referable to this group are mostly small, ranging from .75 to about 2 mm in length, usually yellowish or reddish, though a few are brownish. Species of this genus are very frequently reared from various galls and are probably zoophagous. This is undoubtedly true ofil grassator Fyles, L. peruviana Felt! and a number of other species, though it will be observed by referring to the records, that a considerable number of species have been reared from flowers 1Ent. News, 22:10-II, 1911. [30 NEW YORK STATE MUSEUM or rolled leaves. It is doubtful if species referable to this genus are responsible for the vegetable deformities or even partly so. We can not, in the present state of our knowledge, make definite state- ments respecting the habits of these forms. Certain species in the following table are given in two divisions as having the wings either hyaline or spotted. This is due to the fact that it is very difficult to draw a sharp line between spotted and unspotted wings in cases where there are intergradations. Furthermore, females which are not represented in the following table, frequently have spotted wings, while their consorts have the organs of flight hyaline. This character, though variable, is a very convenient one upon which to make pri- mary divisions. Key to Species a Wings hyaline b Wings narrow, the length three times the width c Abdomen brownish d Abdomen yellowish brown, the stems of the fifth antennal seg- ment with a length three and one-half times the diameter, the distal node with a length one-fourth greater than its diameter; reared from fusiform galls on cherry twigs.................. cerasi Felt, C. ar593a dd Abdomen reddish salmon, the fifth antennal segment having the stems with a length three and one-half times the diameter, the distal node with a length equal to its diameter, circumfila long juniperina Felt, C. 746 cc Abdomen yellowish d Abdomen pale yellowish, the fifth antennal segment having the stems with a length three times the diameter, the distal node with a length one-third greater than its diameter, circumfila rather long; reared from a cylindric fimbriate leaf gall on Crataegus. Jaq. cic saee oe ae crataegifolia Felt, C. a1555 dd Abdomen yellowish, the second to fourth segments fuscous, the fifth antennal segment having the stems with a length two and one-half times the diameter, the distal node with a length one- half greater than its diameter, style short.................. cincta Felt, C. 465 ddd Abdomen fuscous yellowish e Style short, the fifth antennal segment having the stems with a length two and one-half times the diameter, the distal node with a length one-half greater than its diameter, not constricted; reared from rolled edge of poplar leaf... populifolia Felt, C. a1490 ee Style long, the fifth antennal segment having the stems with a length three and one-half times the diameter, the distal node with a length one-third greater than its diameter, constricted; reared from rolled ash leaves............... fraxinifolia Felt, C. a1572 REPORT OF THE STATE ENTOMOLOGIST 1918 131 dddd Abdomen fuscous yellowish, fuscous basally, fifth antennal seg- ment having the stems with a length two and one-half times the diameter, the distal node with a length one-half greater than its diameter, the style short; dorsal plate slightly emarginate, the lobes broadly emarginate......... baisialis' Belt €i 512 ccc Abdomen light carmine, the fifth antennal segment having the stems with a length two and one-half times the diameter, the distal node with a length one-half greater than its diameter; style long; reared from rolled Verbena ‘urticifolia leaves... ..........2.5+-+.0s0-.-. Vier bienitoliaa Kelt Crarsaza bb Wings moderate, with a length about two and one-half times the width c Abdomen light brown d Fifth antennal segment having the stems with a length three and one-half times the diameter, the distal node with a length equal tomes diameter ay. 44). flavomarginata Felt, C. 109 dd Fifth antennal segment having the stems with a length three times the diameter, the distal node with a length one- fourth greater than its diameter e Wings medium, with a length two and one-half times the width, circumfila moderate; reared from Phylloxera vasta- Erix call Sener eeee. grassator Fyles, C. 962, 963, 974 ee Wings broad, with a length only two and one-eighth times the width; circumfila heavy; reared from pods of Yucca ancustitolianea: see nece ace yuccae Felt, C1017 cc Abdomen yellowish d Abdomen pale yellowish e Basal stem of the fifth antennal segment with a length three and one-half times its diameter f Distal stem of fifth antennal segment with a length three times its diameter, the circumfila stout, rather long; TEAareadsLrom Solidago moscute zany aaa ee eee ee solidaginis Felt, C. a1655b ff Distal stem of fifth antennal segment with a length three and one-half times its diameter, circumfila rather long hicoriae Felt, C. 261a ee Basal stem of the fifth antennal segment with a length two and one-half times its diameter f Distal stem of fifth antennal segment with a length three and one-half times its diameter, the circumfila short; reared from distorted flower buds of figwort, Sicimoypaklrariaa) eum tanya lta 0 eile eee scrophulariae Felt, C. a1569 dd Abdomen fuscous ‘yellowish, fifth antennal segment with the stems three and one-half times their diameters e Abdomen fuscous yellowish f Style long g Distal node of fifth antennal segment with a length one-fourth greater than its diameter; reared from MOWEESOMdOs Dane. retains apocyniflorae Felt, C. a1684 132 NEW YORK STATE MUSEUM gg Distal node of fifth antennal segment with a length one-half greater than its diameter; reared from Supslopulanilear callvonypo plana eens globosa Felt, C. a1656 ff Style short, the lobes of the basal clasp segment slightly rounded, the distal node of the fifth antennal segment with a length one-half greater than its diameter.:.. tsugae Felt, C. 168b ddd Abdomen reddish e Abdomen reddish fuscous, the fifth antennal segment with the stems three and one-half and three times their diameters respectively, the distal node with a length one- fourth greater than its diameter; reared from rolled milk- weed (Asclepias) leaves..... asclepiae Felt, C. a1588 ee Abdomen reddish brown, the fifth antennal segment with stems three and one-half times their diameters, the distal node with a length one-fourth greater than its diameter rugosa Felt, C. 650c eee Abdomen reddish, fifth antennal segment with the stems three and three and one-half times their diameters, the distal node with a length one-fourth greater than its diameter; Feared strom) Clematis OWerseee sno tee eee ee eee clematiflorae Felt, C. a1694b aa Wings spotted b Legs broadly white-banded, the fifth antennal segment having the stems with a length two and one-half times their diameter, the ventral plate coarsely setose apically; reared from thorn leaf. .florida Felt, C. 986 bb Legs not broadly white-banded c Abdomen yellowish d Basal segment dark brown or black.............--.-++00+-+- carolinae Felt, C. a1636 dd Abdomen orange tinted, the fifth antennal segment having the stems with a length three and one-half times their diameters, the distal node with a length one-fourth greater than its diameter e Wings medium, with a length two and one-half times the width; reared from Eupatorium ageratoides............ eupatorii Felt, C. a1280 ee Wings broad, with a length two and one-half times the width; reared from plane (Platanus) leaf.............. platanifolia Felt, C. a1669a ddd Abdomen reddish apically, the fifth antennal segment having the stems with a length three and one-half times their diameters, the distal node with a length one-fourth greater thanwtsidiameter see eer asteris Felt, C. 615 dddd Abdomen red tinted, the fifth antennal segment having the stems with a length three and one-half times their diameters e Wings moderate, with a length two and one-half times the width) reared trom Ram exile eee ae ne te eterna ee rumicis Felt, C. a1595a REPORT OF THE STATE ENTOMOLOGIST 1918 133 ee Wings rather narrow, with a length two and three-fourths times the width; reared from thickened leaf fold on S)P ium ase raisty OLE 11 E OlSiaey. diets eetiay sai Se ee spiraeafolia Felt, C. 760 (a1174) ddddd Abdomen brown tinted, the fifth antennal segment having the stems with a length three times the diameters, the distal node with a length greater than its diameter; reared from Solidago leat with elongate brown:.Spots. a... Veale eee triangularis Felt, C. 763 (a1170) cc Abdomen dark red, the tarsi faintly banded d Fifth antennal segment having the stems with a length two and one-half times the diameters; reared from rolled milkweed leaf asclepiae Felt, C. ar588a dd Fifth antennal segment having the stems three and three and one-third times their length; reared from galls of Ph y1llox- GPO WE SWRI sco Ube oooee grassator Fyles, C. a1654 Lestodiplosis cerasi Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 407 iota N.Y. State Mus, Bul: 200, p; 152 The reddish orange male was reared July 26, 1907 from variable, oval or fusiform twig swellings on wild cherry, Prunus sero- tina, taken at West Nyack, N. Y. Male. Length 1 mm. Antennae nearly twice the length of the body, rather thickly haired, light brown; yellowish basally; fourteen segments, the fifth with the stems each three and one-half times their diameter; distal enlargement, with a length one-fourth greater than its diameter; terminal segment, distal enlargement with a length three times its diameter, obtusely rounded. Palpi; first segment subquadrate, the second narrowly oval, with a length two and one-half times its width, the third shorter than the second, more slender, the fourth one-third shorter than the third. Face yellowish. Mesonotum light brown, the submedian lines sparsely haired. Scutellum and postscutellum pale yellowish. Abdomen reddish orange with an indistinct fuscous spot on the second abdominal segment. Genitalia pale yellowish. Wings hyaline, costa brown. Halteres yellowish basally, fuscous apically. Coxae and base of femora pale yellowish, the distal portion of femora and tibiae fuscous yellowish, the tarsi darker; claws slender, strongly curved, the pulvilli shorter than the claws. Genitalia; basal clasp segment stout; terminal clasp segment slightly swollen basally, long; dorsal plate deeply and narrowly incised, the lobes broadly rounded. Type Cecid. a1593a. Lestodiplosis juniperina Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 141; separate, p. 44-45 (Cecidomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 408 134 NEW YORK STATE MUSEUM The reddish salmon male was taken August 7, 1906 at Nassau, RANE: Male. Length 1 mm. Antennae fully one-third longer than the body, thickly haired, light brown, yellowish basally; fourteen seg- ments, the fifth with stems each three and one-half times their diameter; the distal node with a length equal to its diameter. Palpi; the first segment short, subquadrate, the others elongate, oval, successively a little shorter, the fourth a trifle longer than the others. Mesonotum dark brown, submedian lines sparsely haired. Scutellum yellowish orange, postscutellum fuscous reddish. Abdomen reddish salmon, the basal four segments dark red, genitalia yellowish. Wings hyaline, costa light brown; halteres yellowish basally, whitish apically. Coxae and femora fuscous transparent, tibiae and tarsi fuscous brown, distal segments darker; claws rather slender, strongly curved. Genitalia; basal clasp segment stout. Dorsal plate broad, deeply incised, the lobes acutely rounded; ventral plate narrow, broadly rounded. Harpes rather short, acute. Type Cecid. 746. Lestodiplosis crataegifolia Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 408 1918 —————— _ N.Y. State Mus. Bul. 200, p. 138 This yellowish male was reared July 17, 1907 from an irregular, rather spiny gall on the upper surface of a Crataegus leaf taken at Bato. Ney. Gall. Four to 5 mm high, 1.5 mm in diameter, the tip fimbriate. This is an irregular, rather spiny gall (pl. 12, fig. 2) on the upper surface of the leaf, each containing a yellowish larva, the posterior extremity being bright red. This species is probably an inquiline. Larva. Length 2.5 mm, yellowish, the exposed posterior extremity bright red. Head short; antennae stout, with a length one-half greater than its diameter; breastbone bidentate, the teeth narrowly rounded. Shaft moderately chitinized. Skin nearly smooth; pos- terior extremity broadly rounded, deeply cleft. Provisionally referred to this species. Male. Length 1.5 mm. Antennae one-half longer than the body, rather thickly haired, fuscous yellowish, yellowish basally; fourteen segments, the fifth with the stems three times their diameters; distal enlargement pyriform, with a length one-third greater than its diameter. Palpi; first segment probably quad- rate, the second narrowly oval, with a length over twice its width, the third shorter, more slender, the fourth one-half longer than the third. Face yellowish. Mesonotum light brown, the submedian lines, scutellum and postscutellum yellowish. Abdomen yellowish transparent; genitalia slightly fuscous, the dorsum of the basal segment tinged with fuscous. Wings hyaline, costa pale straw. Halteres yellowish transparent. Legs a nearly uniform fuscous yellowish; claws slender, evenly curved, the pulvilli shorter than the claws. Genitalia; basal clasp segment slender; terminal clasp seg- REPORT OF THE STATE ENTOMOLOGIST 1918 135 ment long, slender; dorsal plate long, deeply and narrowly emar- ginate, the lobes broadly rounded; ventral plate indistinct. Female. Length 1.5 mm. Antennae nearly as long as the body, sparsely haired, pale straw, yellowish basally; fourteen segments, the fifth (fig.25b) with a stem three-fourths the length of the cylindric basal enlargement, which latter has a length two and one-half times its diameter, is slightly constricted near the basal third; terminal segment (fig. 25a) with a length three and one-half times its diameter, narrowly rounded. Palpi; first segment subquadrate, the second narrowly | | } | | ! | | | Fig. 25 Lestodiplosis crataegifolia: a, terminal and 3, fifth antennal segment of female (enlarged, original) oval, with a length three times its width, the third shorter, narrowly oval, the fourth nearly as long as the second. Face yellowish. Mesonotum dark brown, the narrow submedian lines yellowish, sparsely haired. Scutellum pale yellowish, sparsely setose, post- scutellum darker. Abdomen pale yellowish. Ovipositor short, terminal lobes narrowly oval, with a length three times the width. Otherwise nearly as in the male. Type Cecid. a1555. Lestodiplosis cincta Felt 1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 408 This yellowish male was taken July 3, 1906 on New Jersey tea, Ceanothus americanus, at Albany, N. Y. Male. Length .75 mm. Antennae one-half longer than the body, thickly haired, pale brown, yellowish basally ; fourteen segments, the fifth with stems twice the length of their diameters; the distal node with a length one-half greater than its diameter. Palpi; the first segment subquadrate, rounded distally, the second one-half longer, narrowly oval, the third a little shorter, the fourth a little longer and more slender than the third; face yellowish. Mesonotum dark brown, submedian lines narrow, yellowish. Scutellum and 136 NEW YORK STATE MUSEUM postscutellum fuscous yellowish. Abdomen fuscous yellowish with the second, third and fourth abdominal segments fuscous, rather thickly clothed with fine hairs. Wings hyaline, costa pale brown; halteres pale yellowish basally, fuscous apically. Legs a nearly uniform dark brown, lighter ventrally; claws long, slender, strongly curved. Genitalia (pl. 20, fig. 4); basal clasp segment long, slender, obliquely truncate; terminal clasp segment long, swollen basally; dorsal plate broad, deeply and narrowly incised, the lobes narrowly rounded; ventral plate broad, narrowly rounded; style stout, short. Type Cecid. 465. Lestodiplosis populifolia Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 408 1915 ———— N.Y. State Mus. Bul. 175, pl. 3, fig. 4 1918 —————— _ N.Y. State Mus. Bul. 200, p. 38 This fuscous yellowish male was reared July 22, 1907 from a marginal leaf roll on poplar, Populus tremuloides, taken at Albany, N. Y. Gall. A marginal leaf roll 1o mm long, 2 mm wide, slightly dis- torting and shortening that side of the leaf. ; Male. Length 1.5 mm. Antennae one-fourth longer than the body, thickly haired, light brown, the basal segments yellowish; fourteen segments, the fifth with stems twice their diameters; distal node with a length one-half greater than its diameter. Palpi; the first segment short, stout, subquadrate, the second a little longer, narrowly oval, the third a little longer and more slender than the second and the fourth one-half longer and more slender than the third. Mesonotum dark brown, the submedian lines fuscous yel- lowish. Scutellum reddish orange, postscutellum a little darker. Abdomen fuscous yellowish, the distal segments yellowish. Geni- talia fuscous. Wings hyaline, costa dark brown; halteres whitish transparent. Legs a nearly uniform dark brown; claws long, slender, evenly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment long, slender; terminal clasp segment long, slender; dorsal plate short, stout, deeply and triangularly emarginate, the lobes narrowly rounded; ventral plate a little longer, slender, broadly rounded. Type Cecid. ar4go. Lestodiplosis fraxinifolia Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 408 1918 N. Y. State Mus. Bul. 200, p. 179 The fuscous yellowish male was reared July 23, 1907 from badly rolled ash, Fraxinus, leaflets taken by L. H. Joutel at Newfoundland, Neve Gall. The whitish larvae occurred in badly rolled, young ash ‘leaflets. REPORT OF THE STATE ENTOMOLOGIST 1918 137 Male. Length 1.25 mm. Antennae one-half longer than the body, thickly haired, light brown, yellowish basally; Rileiech seg- ments, the fifth with stems three and one-half times their diameter, distal enlargement pyriform, with a length one-third greater than its diameter ; terminal segment, distal enlargement with a length four times its diameter, apex obtuse. Palpi: first segment sub- quadrate, the second, third and fourth subequal, the third being slender. Face fuscous yellowish. Mesonotum light brown, the submedian lines and posterior median area fuscous yellowish. Scu- tellum light fuscous yellowish, postscutellum darker. Abdomen fuscous yellowish and pale orange, the segments thickly haired posteriorly, the basal ones somewhat fuscous; genitalia fuscous yellowish. Wings hyaline, costa light brown. Halteres semi- transparent basally, fuscous yellowish apically. Legs a nearly uni- form fuscous yellowish; claws slender, strongly curved, the pulvilli shorter than the claws. Genitalia; basal clasp segment slender; terminal clasp segment long; dorsal plate broadly and roundly emarginate, the lobes narrowly rounded; ventral plate long, broadly rounded. Type Cecid. ar572. Lestcdiplosis basalis Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 408 The dark yellowish male with the abdomen fuscous basally, was taken July 6, 1906 on New Jersey tea, Ceanothus ameri- canus, at Albany, N. Y. Male. Length .75 mm. Antennae one-half longer than the body; thickly haired, light brown, yellowish basally; fourteen segments, the fifth with stems, each two and one-half times their diameter, distal enlargement pyriform, with a length one-half greater than its diameter; terminal segment having the distal enlargement with a length two and one-half times its diameter, broadly rounded apically. Palpi; first segment subquadrate, the second with a length two and one-half times its diameter, the third a little shorter, nar- rowly oval, the fourth still shorter, more slender. Face yellowish. Mesonotum dark brown, the submedian lines yellowish. Scutellum dark orange. Abdomen fuscous basally, dark yellowish apically; genitalia tipped with fuscous. Wings hyaline, costa light brown; halteres pale yellowish. Legs a nearly uniform light brown, the tarsi slightly darker; claws slender, strongly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment slender; terminal clasp segment stout at base, short; dorsal plate deeply and narrowly emarginate, the lobes broadly rounded; ventral plate long, broadly rounded; style long. Type Cecid. 512. Lestodiplosis verbenifolia Felt 1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 408 1918 —————_ N.Y. State Mus. Bul. 200, p. 182 This light carmine male was reared July 20, 1907 from rolled leaves of Verbena urticifolia taken at Karner, N. Y. 138 NEW YORK STATE MUSEUM Male. Length 1.25 mm. Antennae one-fourth longer than the body, thickly haired, light fuscous yellowish basally; fourteen seg- ments, the fifth with stems each having a length two and one-half times their diameter; distal enlargement pyriform, with a length one-half greater than its diameter; terminal segment having the distal enlargement with a length three times its diameter, the apex obtusely rounded. Palpi; first segment quadrate, the second nar- rowly oval, with a length twice its diameter, the third a little longer, more slender, the fourth shorter, slightly dilated. Face yellowish. Mesonotum dark brown, the submedian lines yellowish. Scutellum and postscutellum fuscous yellowish. Abdomen light carmine, the dorsum of the second and third abdominal segments variably fus- cous. Wings hyaline, costa light brown; halteres light fuscous. Legs light fuscous straw, the distal tarsal segments darker; claws slender, strongly curved, the pulvilli as long as the claws. Geni- talia; basal clasp segment slender; terminal clasp segment slender; dorsal plate deeply and triangularly emarginate, the lobes narrowly and obliquely truncate; ventral plate short, broadly rounded, style short.) Dype' Cecid: ans7 7a: Lestodiplosis flavomarginata Felt LOOZM elt Bes UNe in notate w Vitiss Bile TO; py wise separates 42 (Cecidomyia) 1908 ———— N.Y. State Mus. Bul: 124, p. 408 The light-brown male was taken June 1, 1906 on white clover, Hritvodi unm) re pens, at Albany! Nave Male. Length .75 mm. Antennae one-half longer than the body, thickly haired, light brown; fourteen segments, the fifth with stems, each having a length three and one-half times their diameter; distal node with a length equal to its diameter. Palpi; the first segment suboval, the second twice the length of the first, elongate, oval, the third about the same length, more slender, the fourth a little shorter than the third, slightly expanded distally. _Mesonotum yellowish brown, the broad median area thickly clothed with yellowish hairs. Scutellum reddish, the postscutellum probably concolorous. Abdo- men light brown, anterior segments margined posteriorly with yel- lowish, posterior segments reddish. Wings hyaline, costa light brown; halteres reddish transparent basally, somewhat fuscous apically. Coxae yellowish transparent, tinged with reddish apically; femora yellowish transparent, tibiae slightly darker, tarsi light brown; claws slender, evenly curved. Genitalia; basal clasp segment very long, slender; terminal clasp segment slightly swollen basally; dorsal plate broad, deeply incised, the lobes broadly rounded; ventral plate narrow, broadly rounded; style very long. Type Cecid. roo. Lestodiplosis grassator Fyles 1882 Fyles, T. W. Can. Ent. 14:237-39 (Diplosis) 1883. ————— Ent. Soc. Ont., 14th Rep’t, p. 30-31 (Diplosis) REPORT OF THE STATE ENTOMOLOGIST 1918 139 1889 Saunders, William Ins. Injur. to Fruits, p. 239 (Diplosis) 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 408 190A Wess econ. Ent. Jour, 72458 1918 ————— N. Y. State Mus. Bul. 200, p. 168 This light-brown midge, reared from Phylloxera vasta- trix galls, was recorded as very abundant in the vicinity of London, Ontario, in 1882. The larvae and pupae were found in Phylloxera galls, which latter were rather common on Clinton and other grape vines. The eggs are deposited at or near the entrance to the gall. The larva is said to be very active, groping about within the hollow of the gall and devouring the young lice. There were no evidences of the larvae attacking the parent insects, and there was usually an abundance of the young. One or two larvae occur in a gall and in no instance were living Phylloxerae found in association with the pupae — evidence that this Cecidomyiid is a voracious destroyer of this grape pest. Male. Length 1.5mm. Antennae nearly twice the length of the body, thickly haired, light brown; fourteen segments, the fifth with stems each three and one-half times their diameter; distal enlarge- ment subglobose, with a length equal to its diameter; terminal segment, distal enlargement with a length nearly four times its diameter, the apex subacute. Palpi; first segment subquadrate, the second with a length three times its diameter, the third and fourth nearly equal to the second and more slender. Mesonotum yellowish brown. Scutellum and postscutellum lighter. Abdomen light brown. Wings with a length two and one-half times the width, hyaline, costa light brown. Halteres yellowish transparent. Legs pale brown; claws slender, strongly curved, the pulvilli a little shorter than the claws. Genitalia; basal clasp segment slender; terminal clasp segment long, slender; dorsal plate deeply and tri- angularly emarginate, the lobes broadly rounded; ventral plate long, broadly rounded; style long. Female. Length 2 mm. Antennae nearly as long as the body, sparsely haired, pale yellowish; fourteen segments, the fifth with a stem one-fourth longer than the cylindric basal enlargement, which latter has a length two and one-half times its diameter and is slightly constricted near the middle; terminal segment with a length four times its diameter, narrowly rounded. Palpi; first segment quad- rate, second rectangular, with a length two and one-half times its diameter, the third a little longer, more slender, the fourth a little longer and more dilated than the third. _Mesonotum a variable yellowish dark brown. Scutellum yellowish, postscutellum dark brown. Abdomen yellowish brown. Ovipositor short, the terminal lobes with a length nearly twice the width, narrowly rounded. Type Cecid. 962. Lestodiplosis yuccae Felt 1908 Felt, E. P. N.Y. State Mus. Bul. 124, p. 408 1918 ——————_ N. Y. State Mus. Bul. 200, p. 27 I40 NEW YORK STATE MUSEUM This light-brown male was reared September 12, 1893 from pods of Yucca angustifolia received at the bureau of ento- mology, United States Department of Agriculture, Washington, D. C. Gall. This species apparently produces no deformity, having been reared from Yucca pods. Male. Length .75 mm. Antennae about twice the length of the body, thickly haired, light brown; fourteen segments, the fifth with stems each two and one-half times their diameter; distal enlargement pyriform, with a length one-fourth greater than its diameter; ter- minal segment, distal enlargement with a length three times its diameter, obtuse. Palpi; first segment quadrate, the second with a length three times the width, the third and fourth missing. Mesono- tum reddish brown. Scutellum light yellowish. Abdomen light brown, rather thickly haired; genitalia fuscous. Wings with a length two and one-eighth times the width, hyaline, costa dark brown. Halteres yellowish transparent. Coxae and base of femora pale yellowish, distal portion of femora, tibiae and tarsi light brown; claws rather stout, strongly curved, the pulvilli about as long as the claws. Genitalia; basal clasp segment slender; terminal clasp segment long; dorsal plate probably triangularly emarginate; ventral plate long, broadly rounded; style long. Type Cecid. 1017. Lestodiplosis sclidaginis Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 409 1900 Ottawa Nat. 222248 1918 — N.Y. State Mus. Bul. 200, p. 192 This species was reared August 20, 1907 in association with Rho - palomyia albipennis Felt from a gall collected at Albany. It is presumably zoophagous. Male. Length 1 mm. Antennae longer than the body, rather thickly haired, the basal segment yellowish; fourteen segments, the fifth with stems three and one-half and two times their diameters respectively; terminal segment, distal enlargement cylindric, with a length about three times its diameter and tapering abruptly to a narrowly rounded apex. Palpi; first segment short, stout, broadly rounded, the second narrowly oval, the third a little longer, more slender, the fourth as long as the third; face yellowish. Mesonotum fuscous, the submedian lines darker. Scutellum fuscous, postscu- tellum a little lighter. Abdomen yellowish, the second and the base of the third segments reddish; membrane and pleura yellowish. Wings hyaline, costa dark brown, subcosta uniting therewith at the basal third; halteres yellowish. Coxae whitish transparent; femora yellowish basally, darker apically; tibiae a variable fuscous; tarsi with the first segment fuscous, the others lighter; claws slender, slightly curved, simple, the pulvilli shorter than the claws. Geni- talia; basal clasp segment slender, terminal clasp segment slender, slightly swollen basally. Dorsal plate deeply and_ triangularly REPORT OF THE STATE ENTOMOLOGIST 1918 I4I emarginate, the lobes broadly rounded; ventral plate short, broad rounded; style slender. Type Cecid. ar6ssb. Lestodiplosis hicoriae Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 137-38; separate, p. 41 (Cecidomyia) 1905)———— N. Y. State’Mus. Bul. 124, p. 400 This pale yellowish male was taken June 14, 1906 on hickory, Carya, at Nassau, N. Y. Male. Length .75 mm. Antennae fully twice as long as the body, thickly clothed with fine hairs, light brown; fourteen seg- ments, the fifth with stems, each having a length three and one-half times their diameter; distal node obpyriform. Palpi; the first seg- ment short, subquadrate, second a little longer, broadly oval, the third a little longer, narrowly oval, the fourth more slender and longer than the third; face dark fuscous. Mesonotum dark brown. Scutellum reddish brown, postscutellum darker. Abdomen pale yel- lowish with dark brown mesially on the basal segment. Wings hyaline, costa pale brown; halteres whitish transparent. Legs a nearly uniform pale reddish straw color, tarsi slightly darker; claws slender, evenly curved. Genitalia; basal clasp segment long, slender; terminal clasp segment swollen basally, tapering; dorsal plate broad, deeply and narrowly incised, the lobes rather narrowly rounded; ventral plate broad, broadly rounded; style long. Type Cecid. 261a. Lestodiplosis scrophulariae [Felt 1907. Felt, E. P. New Species of Cecidomyiidae II, p. 22 (Cecidomyia) 1908 —————__ N.Y. State Mus. Bul. 124, p. 303 (Cecidomyia) p. 409 1918 ————— _ N.Y. State Mus. Bul. 200, p. 185 This pale yellowish carmine male was reared August 8, 1907 from distorted flower buds of Scrophularia marylandica taken at West Nyack, N. Y. Male. Length 1.5 mm. Antennae one-fourth longer than the body, thickly haired, light brown; fourteen segments, the fifth with stems having a length one and one-half and three and one-half times their diameters respectively, the distal enlargement some- what produced; terminal segment, distal enlargement prolonged, obtusely rounded. Palpi; the first segment short, stout, irregular, the second one-half longer, narrowly oval, the third about as long as the second, and the fourth a little longer than the third. Mesono- tum dark brown, the submedian lines sparsely haired. Scutellum yellowish brown, postscutellum fuscous. Abdomen pale yellowish carmine, the basal segments apparently with a variable fuscous spot, genitalia fuscous yellowish. Wings hyaline, costa, light brown; halteres yellowish transparent. Legs a variable fuscous straw, the tarsi nearly black; claws rather long, slender, evenly curved, the pulvilli a little shorter than the claws. Genitalia; basal and terminal I42 NEW YORK STATE MUSEUM clasp segments long, slender; dorsal plate short, broad, deeply and triangularly incised, the lobes broadly rounded; ventral plate short, broadly rounded; style short. Type Cecid. a1569. Lestodiplosis apocyniflorae Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 409 1918 ———— _ N.Y. State Mus. Bul. 200, p. 180 This dull fuscous yellowish male was reared August 9, 1907 from unopened, apparently normal flower buds of dogbane, Apocynum andromaesifolium, collected at Nassau, N. Y. Male. Length 1 mm. Antennae longer than the body, sparsely haired, yellowish brown; fourteen segments, the fifth with stems each having a length three and one-half times their diameter; distal enlargement subglobular, with a length one-fourth greater than its diameter. Palpi; first segment subquadrate, the second broadly oval, with a length twice its diameter, the third as long as the second, slender, the fourth a little longer and more slender. Mesonotum dull reddish, submedian lines indistinct. Scutellum and postscu- tellum dull reddish. Abdomen dull fuscous yellowish. Wings hyaline, costa dark brown; halteres white. Coxae dull reddish. Legs yellowish straw; claws long, strongly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment stout; terminal clasp segment long, slender; dorsal plate deeply and triangularly emarginate, the lobes narrowly rounded; ventral plate long, broadly rounded. Type Cecid. a1684. Lestodiplosis globosa Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 409 19ksy =. = Ne YeStateMusmBullzoopnss This fuscous yellowish male was reared July 24, 1907 from a variable subglobular leaf gall on poplar, Populus tremu- loides, taken by L. H. Joutel at Newfoundland, N. J. Male. Length .75 mm. Antennae nearly twice the length of the body, thickly haired, fuscous yellowish; fourteen segments, the fifth with stems having a length two and one-half and three and one-half times their diameters respectively; distal enlargement with a length one-half greater than its diameter. Palpi; first segment probably quadrate, the second narrowly oval, with a length about two and one-half times its diameter, the third as long as the second, more slender, the fourth a little longer than the third, slender. Mesonotum light brown, the submedian lines yellowish, indistinct. Scutellum reddish yellow. Abdomen fuscous yellowish. Wings hyaline, costa light brown; halteres pale yellowish. Legs a nearly uniform fuscous straw; claws slender, strongly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment slender; terminal clasp segment slender, rather short; dorsal plate triangularly emarginate, the lobes narrowly rounded; ventral plate long, broadly rounded; style short. Type Cecid. ar656. : REPORT OF THE STATE ENTOMOLOGIST 1918 143 Lestodiplosis tsugae Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 139; separat (Cecidomyia) Trai ae Set WOH 1906) ————— | N. Y. State Mus. Bul. 124, p. 409 This fuscous yellowish male was taken June 7, 1906 on hemlock, Tsuga canadensis, at Lake Clear, N. Y. Male. Length 1 mm. Antennae twice as long as the body thickly clothed with fine hairs, light brown, yellowish basally; four- teen segments, the fifth with stems each three and one-half times their diameter; distal node pyriform, with a length one-half greater than its diameter. Palpi; the first segment short, broadly oval, the second twice the length of the preceding, subrectangular, the third a little longer, more slender, the fourth about as long as the preceding, more strongly flattened; mouth parts prolonged in a short, triangular beak; face yellowish. Mesonotum dark brown, lighter posteriorly, submedian lines yellowish. Scutellum yellowish apically, rather thickly clothed with fine hairs. Abdomen fuscous yellowish. Wings hyaline, costa light brown; halteres yellowish transparent. Legs dark brown, ventral surface and base of femora paler; claws slender, uniformly curved, simple. Genitalia; basal clasp segment long, stout; terminal clasp segment swollen basally; dorsal plate short, broad, deeply and triangularly incised, narrowly rounded; ventral plate short, relatively broad, broadly rounded; style long. Type Cecid. 168b. Lestodiplosis asclepiae Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 409, 410 1918 ————_ N. Y. State Mus. Bul. 200, p. 180 This deep-red species was reared in early August 1907 from rolled leaves of milkweed, Asclepias cornuta, containing whitish larvae some 2 mm long and collected at Highland and also at Albany, New: Male. Length .75; mm. Antennae one-half longer than the body, thickly haired, fuscous yellowish; fourteen segments, the fifth with stems having a length three and one-half and three times their diameters respectively, the distal node with a length one-fourth greater than its diameter; terminal segment having the distal portion of the stem with a length about twice its diameter, obtuse. Palpi; first segment subquadrate, the second with a length three times its diameter, the third as long as the second, the fourth a little longer, all slender. Face light brown. Mesonotum reddish brown, the submedian lines thickly haired. Scutellum pale yellowish, post- scutellum fuscous. Abdomen deep red, the basal segments a variable fuscous; genitalia fuscous yellowish. Wings hyaline, costa reddish brown: halteres light straw. Coxae pale orange, the extremities of femora light fuscous. Legs a variable light brown, the anterior somewhat darker; claws slender, strongly curved, the pulvilli nearly 144 NEW YORK STATE MUSEUM as long as the claws. Genitalia; basal and terminal clasp segments long; dorsal plate deeply and triangularly emarginate, the lobes narrowly rounded; ventral plate long, broadly rounded; style long. Type Cecid. a1588. Lestodiplosis rugosa Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 141; separate, p. 45 (Cecidomyia) 1908 ————— N.Y. State Mus. Bul. 124, p. 409 1918 ————— N.Y. State Mus. Bul. 200, p. 194 This reddish brown male was reared July 15, 1906 from galls on Solidago collected at Albany, N. Y. Male. Length .75 mm. Antennae twice the length of the body, thickly haired, light brown; fourteen segments, the fifth with stems each with a length three and one-half times their diameter; distal node with a length one-fourth greater than its diameter; terminal segment, the distal portion greatly produced, subcylindric, obtusely rounded. Palpi; the first segment subrectangular, rather slender, the second, third and fourth, each about as long as the first, rounded at each extremity. Mesonotum dark brown, submedian lines sparsely haired. Scutellum yellowish reddish apically, postscu- tellum dark brown. Abdomen reddish brown, thickly haired, basal segments darker, genitalia yellowish. Wings (pl. 16, fig. 8) hyaline, costa brown; halteres yellowish basally, fuscous apically. Legs nearly uniform light brown; claws slender, rather strongly curved distally. Genitalia; basal clasp segment long, slender; terminal clasp segment slightly swollen at the base, long; dorsal plate broad, deeply and narrowly incised, the lobes narrowly rounded; ventral plate narrow, broadly rounded; style long, slender. Type Cecid. 650C. Lestodiplosis florida Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 409 1918 ——— N.Y. State Mus. Bul. 200, p. 138 This pale yellowish brown male was reared June 29, 1880 from a leaf roll on thorn, Crataegus, at Fort George, Fla., and sent to the bureau of entomology, United States Department of Agriculture. The larvae occur near the edge of the lower side of the younger leaves, causing the edge to bend down and roll up. Male. Length 2mm. Antennae one-half longer than the body, thickly haired, pale yellowish; fourteen segments, the fifth with stems with a length two and one-half and three and one-half times their diameters respectively; distal enlargement subglobose, with a length one-fourth greater than its diameter. Palpi; first segment subquadrate, the second dilated, with a length three times its width, the third as long as the second, slender, the fourth one-half longer than the third, slender. Mesonotum reddish brown. Scutellum REPORT OF THE STATE ENTOMOLOGIST 1918 145 and abdomen reddish. Wings subhyaline, variably sr whitish legs broadly banded with dark brown at ae ae ise the middle of the tibiae, on the first and the base of the second tarsal segments, on the apex of the second and the base of the third tarsal segments and apically on the fifth. Genitalia; basal clasp segment stout, long; terminal clasp segment slightly swollen basally stout; dorsal plate deeply and triangularly incised, the lobes nar- rowly rounded; ventral plate broad, narrowly rounded: style stout. Female. Antennae pale yellowish, the two basal segments blackish. Thorax dusky in the older specimens, reddish in the younger ones. Scutellum and abdomen reddish, the latter with pale, silky hair. Legs pale reddish yellow; femora clothed with blackish hair which gives them a dusky appearance; tibiae covered with silvery white hair, the base and a ring around the middle, black; tarsi silvery white, first joint black, also the base of the tip of the second and third. Wings pale buff with three more or less distinct dusky zigzag bands across (Pergande notes) Type Cecid. 986. Lestodiplosis clematiflorae Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 409 1918 ————_ N. Y. State Mus. Bul. 200, p. 129 This reddish male was reared August 28, 1907 from unopened flowers of Virgins bower, Clematis virginiana, collected at Karner, N. Y. Male. Lengthrmm. Antennae one-fourth longer than the body, sparsely haired, light brown; fourteen segments, the fifth with stems three and one-half and three times their diameters, respectively; distal enlargement subglobose, with a length one-fourth greater than its diameter; terminal segment, distal enlargement with a length three times its diameter, obtuse. Palpi; first segment quadrate, the second with a length nearly three times its width, the third nearly as long as the second, more slender, the fourth longer than the third, more slender. Mesonotum slightly infuscated. Scutellum and post- scutellum a little darker than the reddish pleurae. Wings hyaline, costa reddish brown. Halteres, coxae and femora basally pale yellowish, the distal portion of femora and tibiae brownish; tarsi brown; claws long, slender, evenly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment long; terminal clasp segment long, slender; dorsal plate deeply and triangularly incised, the lobes narrowly rounded; ventral plate long, narrowly rounded; style long. Type Cecid. a1694b. Lestodiplosis carolinae Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 139; separate, p. 43 (Cecidomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 409 I918 ————— N. Y. State Mus. Bul. 200, p. 192 146 NEW YORK STATE MUSEUM This pale yellowish male was reared October 5, 1906 from a large, loose, rosette gallon Solidago canadensis taken at Ashe- ville, N. C. Male. Length rmm. Antennae one-fourth longer than the body, thickly haired, fuscous yellowish, lighter basally; fourteen segments, the fifth with stems thrice their diameters; distal node with a length equal to its diameter. Palpi; the first segment subquadrate, the other three twice as long, subequal; face fuscous yellowish. Mesono- tum dark brown, submedian lines indistinct. Scutellum black or very dark brown, postscutellum dark brown. Abdomen pale yel- lowish, basal segments dark brown or black dorsally, the terminal segments shaded with orange; genitalia yellowish, tipped with dark brown and thickly setose. Wings subhyaline, spotted, costa pale yellowish and fuscous; there is a distinct marginal spot anteriorly near the middle and at the apical fourth; on the posterior border there is a marginal spot at the basal third and at the apex of the fork of the fifth vein, the halteres pale yellowish. Legs a variable light fuscous yellow basally, basal tarsal segments somewhat darker than the distal ones; claws slender, strongly curved. Genitalia; basal clasp segment long, slender; terminal clasp segment long; dorsal plate broadly and deeply incised, the lobes acutely rounded; ventral plate narrow, broadly rounded; style narrow, long. Type Cecid. a1636. Lestodiplosis eupatorii Felt 1907 Felt E.P WN. Y. State Mus. Bul. 110, p. 140; separate, p. 44 1008) 05>) NEY cate Mus siBulepi 24 pairo 1915 ———— N. Y. State Mus. Bul. 175, pl. 4; fig. 19 1918 ————— N. Y. State Mus. Bul. 200, p. 190 This pale yellowish species was reared September 12, 1906 from rounded galls (pl. 13, fig. 2) in flower heads of Eupatorium ageratoides collected at South Bay, Glen Lake, Lake Cham- plain, August 21, 1906. Male. Length 1 mm. Antennae fully one-half longer than the body, thickly clothed with long hairs, light brown; fourteen segments, the fifth with stems three and one-half times their diameters, the distal node with a length one-fourth greater than its diameter. Palpi; the first segment rather elongate, subquadrate, second, third and fourth subequal, the last more slender; face yellowish. Mesono- tum light olive brown, submedian lines sparsely clothed with pale yellowish setae. Scutellum pale yellowish, postscutellum dark brown. Abdomen yellowish orange, slightly darker posteriorly, basal segments irregularly fuscous. Wings subhyaline, very indis- tinctly spotted, costa light brown; halteres pale yellowish apically, slightly lighter basally. Legs mostly a variable fuscous yellow, the articulations and terminal tarsal segments lighter; claws rather light, strongly curved, simple. Genitalia; basal clasp segment long; REPORT OF THE STATE ENTOMOLOGIST I918 147 terminal clasp segment slender; dorsal plate broad, deeply and nar- rowly incised, the lobes acutely rounded; ventral plate rather narrow, broadly rounded. Type Cecid. a128o. Lestodiplosis platanifolia Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 410 1QRSWiee ea PN). State Mus. Bul. 200, p..133 This pale yellowish male was reared August 1, 1907 from pale orange and whitish larvae occurring in rolls on the underside of leaves of the plane tree, Platanus occidentalis, col- lected in New York City. Male. Lengthi.1mm. Antennae one-half longer than the body, thickly haired, light brown, the basal segments yellowish; fourteen segments, the fifth with stems two and one-half times their. diam- eters; distal node slightly produced. Palpi; the first segment short, stout, irregularly subquadrate, the second one-half longer, rather stout, the third a little shorter and broader than the second, and the fourth shorter and more strongly flattened than the third; face light yellowish. Mesonotum light brown, the submedian lines sparsely haired. Scutellum pale yellowish, postscutellum fuscous. Abdomen mostly pale yellowish, the distal segments tinged with orange, the dorsum of the second and third segments with a fuscous spot, genitalia pale yellowish. Wings subhyaline, distinctly spotted with fuscous; halteres pale yellowish. Legs a light straw, the first and base of the second tarsal segments dark brown, the third and fourth tarsal segments basally and the fifth on the posterior legs also dark brown; claws long, slender, strongly curved subapically, the pulvilli shorter than the claws. Genitalia; basal clasp segment long, slender; terminal clasp segment long; dorsal plate long, broad, deeply and roundly emarginate, the lobes narrowly rounded; ventral plate long, slender, tapering, narrowly rounded; style swollen at the base, long. Type Cecid. ar669a. Lestodiplosis asteris Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 142; separate, p. 45-46 (Cecidomyia) This dull yellowish male was captured June 17, 1906 on aster at Albany, N. Y. Male. Length 1.25 mm. Antennae longer than the body, thickly haired, light brown, fuscous yellowish basally; fourteen segments, the fifth with stems three and one-half times their diam- eters; terminal segment, the distal node subcylindric, slightly dilated at the distal fourth, the apex broadly subconical. Palpi; first seg- ment quadrate, the second narrowly oval, the third and fourth each as long as the second and successively more slender. Face fuscous yellowish. Mesonotum dark brown, the submedian lines distinct. Scutellum yellowish, reddish apically, postscutellum yellowish. 10 148 NEW YORK STATE MUSEUM Abdomen dull yellowish, reddish apically and with a fuscous basal spot. Wings (pl. 16, fig. 6) subhyaline, costa dark brown. Halteres yellowish basally, slightly fuscous apically. Legs fuscous straw; claws slender, slightly curved. Genitalia (pl. 20, fig. 2); basal clasp segment long, slender; terminal clasp segment swollen at the base, long; dorsal plate broad, deeply and narrowly incised, the lobes narrowly rounded; ventral plate long, slender, narrowly rounded; style long, stout. Type Cecid. 615. Lestodiplosis rumicis Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 410 1918 _———— _ N.Y. State Mus. Bul. 200, p. 126 This yellowish, red-tinted male was reared July 29, 1907 from curled. dock, Ruimiex, = (Cecidomyia) 1859 Haldeman, S. S. Boston Soc. Nat. Hist. Proc., 6:401-2 (Cecidomyia) 1862 Harris, T. W. Insects Injurious to Vegetation, p. 567-68 (Cecidomyia) 1872 Glover, Townend U.S. Com’r Agric. Rep’t, p. 127 (Cecidomyia) 1880 Chambers, V.T. Am. Ent., 3:60 (Cecidomyia) 1891 Hopkins, A.D. W. Va. Agric. Expt. Sta. Bul. 16, p. 89-90 (Cecidomyia) 1892 Riley, C. V. & Howard, L. O. Insect Life, 5:136 (Cecidomyia) 1904 Washburn, F.L. Minn. Agric. Expt. Sta. Bul. 88, p. 188 (Cecidomyia) 1905 — Minn. Agric. Expt. Sta. Bul. 93, p. 65 (Cecidomyia) 1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:730 (Cecidomyia) Newey. ; State, Agricia Soc) Dranst, (sss 508: Ssaeee REPORT OF THE STATE ENTOMOLOGIST 1918 153 1907 '———' N. Y. State Mus. Bul. 110, p. 133-34; separate, p. 37 (Cecidomyia orbiculata) 1908 ————— N. Y. State Mus. Bul. 124, p. 410-11 (Obolodiplosis orbiculata) Ors Nv Y. State!Mus. Bul: 200, p. 155 The remarkable male was taken June 10, 1906 on the common locust, Robinia pseudo-acacia, at Albany, N. Y. A number of adults were reared June 12 and 13, 1911 from irregular, marginal leaf folds on locust, Robinia, collected by Dr J. R. Gillett at Kingston, N. Y. Specimens in the United States National Museum labeled Diplosis robiniae belong here, having been reared at Washington June 25, 1903. The larvae are large, whitish, pupate for the most part within the galls, the pupa wriggling partly out before disclosing the imago. It is a common and occasionally an injurious species, many leaflets being destroyed. Gall. Length about 1.5 cm, diameter 2 to 3 mm. This is an irregular, marginal leaf roll containing whitish larvae. Larva. Length about 3 mm, whitish, tapering anteriorly. Pupa. Length 2.5 mm, mostly dark reddish brown; thoracic horns short; eyes rather fuscous; wing pads extending to the fourth abdominal segment, the leg cases to the sixth or seventh. Exuviae. Whitish transparent, the abdominal segments dorsally with a transverse row of stout, well separated spines on the posterior margin. Male. Length 3 mm. Antennae about as long as the body, thickly haired, dark brown; fourteen segments, the fifth (fig. 27a) Pets) Os. pies SONG ena > egy os = ee fe 9 rir Ge Th = Fig. 27 Obolodiplosis robiniae: a, sixth antennal segment, only one seta sketched in; 6, terminal antennal segment of male, setae not sketched in; c, side view of fifth tarsal segment and claws (enlarged, original) 154 NEW YORK STATE MUSEUM with stems three-fourths and two times their diameters, respectively ; trminal segment (fig. 27b), basal enlargement prolonged obpyriform the distal strongly divided, the two parts almost separated by a short stem, the terminal portion constricted at the base, short, subconic. Palpi (fig. 28); the first segment stout, subrectangular, the second twice the length of the preceding, the third one-half longer than the second, a little more slender, the fourth longer and more slender than the third; face dark yellowish brown, eyes large, black. Mesonotum dark brown, yellowish red laterally, submedian lines narrow, yellowish, sparsely ornamented with pale hairs. Scu- tellum rather dark red with fuscous apical hairs, postscutellum darker. Abdomen fuscous brown dorsally, the sclerites slightly darker than the pleurae and incisures, each segment posteriorly with a row of stout, light brown hairs, genitalia reddish brown. Wings (pl. 15, fig. 2) subhyaline, costa light brown; halteres yellow- Fig. 28 Obolodiplosis robiniae: palpus of male (enlarged, original) ish transparent basally, reddish fuscous apically. Legs nearly uni- form dark straw, lighter ventrally; claws (fig. 27c) strongly curved, simple. Genitalia; basal clasp segment short, stout; terminal clasp segment swollen at the base and the apical fourth, greatly prolonged. Dorsal plate broad, the lobes deeply incised and broadly rounded laterally, and somewhat resembling a pair of wings (pl. 17, fig. 2); ventral plate apparently divided, the lobes short, subtriangular, widely separated; style stout, tapering from the distal third, nar- rowly rounded. Female. Length 3 mm. Antennae extending to the third abdominal segment, sparsely haired, fuscous yellowish; fourteen segments, the fifth cylindric, with a stem about one-fourth the length REPORT OF THE STATE ENTOMOLOGIST 1918 155 of ‘the cylindric basal enlargement, which latter has a length three and one-half times its diameter; terminal segment subcylindric, the basal portion with a length three times its diameter. Apically there is a stout, knoblike projection. Palpi; first segment subquadrate, the second narrowly oval, with a length about twice its diameter, the third a little longer, more slender, the fourth one-half longer than the third, somewhat dilated apically. Mesonotum dark brown, the submedian lines rather thickly haired. Scutellum reddish brown, postscutellum yellowish brown. Abdomen sparsely haired, reddish yellow distally. Ovipositor short, the terminal lobes narrowly oval, with a length a little over twice the diameter. Other characters nearly as in the male. Several parasites have been reared from this insect, some of which are of considerable importance. Professor Washburn reared a Peteromaline which Washington authorities stated apparently represented an undescribed genus. RETINODIPLOSIS Kieff. 1912 Kieffer, J. J. Neue Gallmucken-Gattungen, Bitsch, p. 1 1913 ————— Genera Insectorum Fasc. 152, p. 220 1915 Felt, E. P. Econ. Ent. Jour., 8:408 The species referred to this genus represent a homogeneous group of mostly closely allied species which are rather easily recognized by the dark-red or reddish brown color in connection with the short, almost transverse basal stems of the flagellate antennal segments, the rather long, broad distal enlargements, the fine, many-looped circumfila and the rather heavy genitalia, the two plates being usually deeply bilobed. The larvae of the pitch-inhabiting forms are most easily recog- nized by the bilobed posterior extremity, the apex of each lobe being fuscous, heavily chitinized and strongly spined, an adaptation which permits the larva to extend its anal spiracles, located in these lobes, through the surface of the viscous resin it inhabits. The generic type is Cecidomyia resinicola O.S. A somewhat anom- alous, though closely allied species, R. taxodii Felt, has been tentatively referred to this genus. Key to Species a Basal stem of the fifth antennal segment in the male with a length greater than its diameter b Abdomen light yellowish brown, length 2 mm, the fifth antennal segment having the stems each with a length one-half greater than its diameter. Reared from pitch masses on hard pine......-.-----+-+++ee+++e+2> resinicola O.S., C. a185, a1930 150 NEW YORK STATE MUSEUM bb Abdomen deep red, length 2 mm, the fifth antennal segment having the stems with a length one and one-half and two and one-fourth times their diameters, respectively. Reared from deformed Bald Cypress seeds. . taxodii Felt, C. a2722 aa Basal stem of the fifth antennal segment of the male with a length not greater than its diameter b Abdomen dark reddish brown, length 2.25 mm, fifth antennal segment with the stems one-half and as long as their diameters, respectively. Reared from subcortical twig swellings on hard pine................ in opis O%Sss' Ca2284 bb Abdomen dark reddish brown, length 3mm, fifth antennal segment having the stems with a length three-fourths and one and one-half times their diameters, respectively. Reared from pitch masses on Monterey pine resinicoloides Wlms., C. a1930 bbb Abdomen dark reddish brown, length 3.5 mm, fifth antennal segment 1869 1870 1880 1890 1891 1892 1893 1895 1897 1901 1903 1903, 1906 Mem. 8, 1908 1909 IQII IQI2 1912 1918 having the stems with a length as long and one-half longer than their diameters, respectively c Legs a uniform brown. Reared from pitch masses on the long- leavedipine’s sa cece usls aero Paul ashe Se elie Caa2022) cc Legs narrowly annulate with white, the three distal tarsal segments of the posterior legs whitish. Reared from pitch masses on white PINE ie ns theeis eh shee eee Te eee albitarsis Felt, a2917 Retinodiplosis resinicola O. S. Pitch midge Sanborn, F. G. Boston Soc. Nat. Hist. Proc., 12:93 (Cecidomyia) Osten Sacken, R. Am. Ent. Soc. Trans., 3:345-45 (Diplosis) Comstock, J. H. U.S. Com’r Agric. Rep’t, 1879, p. 256-57 (Diplosis) Packard, A. S. U.S. Ent. Com’r 5th Rep’t, p. 797-98 (Diplosis) Townsend, C. H. T. Ent. Soc. Wash. Proc., 2:389-90 (Diplosis) Doran, E. W. Insect Life, 5:212 (Diplosis) Hopkins, A.D. W. Va. Agric. Expt. Sta. Bul., 32:238 (Diplosis) Comstock, J. A. Manual for the Study of Insects, p. 447-48 (Diplosis) Mik, Joseph Wien. Ent. Ziet., 16:290-92 (Cecidomyia) Howard, L. O. Insect Book, p. 114 (Diplosis) Eckel, L.S. Ent. News, 14:279-84 (Diplosis) © Felt, E. P. Forest, Fish & Game Com. 7th Rep’t, p. 505 (Diplosis) Felt, E.P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. 2:340, 410-13, 424 (Cecidomyia) aaa No Ye state: Mus: Bull 124) ps 404 (Cecidomyia) Ent. Soc. Ont., 39th Rep’t, p. 45 (Cecidomyia) Econ. Ent. Jour., 4:465 (Itonida) ———.. N. Y. Ent. Soc. Jour., 20:247—48 (Itonida) Kieffer, J. J. Neue Gallm—Gatt., p. 1 (Retinodiplosis proposed) Felt, E. P., N.Y. State Mus. Bul. 200, p. 16 REPORT OF THE STATE ENTOMOLOGIST 1918 157 The peculiar, whitish masses of pitch (fig. 29) caused by this species are easily recognized. They may hang from the underside of the limbs and occasionally occur in considerable numbers on the trunk of pitch pine. There is frequently a dripping of the pitch in warm weather. Observations by Miss Eckel show that the bright orange larvae are arranged radially about the equator of a spherical pitch drop. The eggs are deposited only on fresh pitch and never on twigs or leaves, the insect apparently taking advantage of fresh ex- udations and, as a rule, finding them in abundance. The young larvae grow rapidly and in the early stages have hooklike spines on the ventral surface of each segment. These disappear and the entire skin is cov- ered with fine, backward curving spines. We reared adults the latter part of June and in early October from material which was supposed to represent only the work of the pine twig moth, Evetria com- stockiana Fern. The normal pitch mass inhabited by this midge may contain from two to thirty larvae which, when full grown, are about 6 mm in length. The pupa works its way partly out of the pitch © m2 mass before the appearance of the midge. ee) Ean cus Male. Length 2mm. Antennae about as ae pair pee long as the body, thickly haired, dark brown; eababitedie miner fourteen segments, the fifth with stems ; ; each one-half longer than the diameter; terminal segment, distal enlargement prolonged, apically a slender, fingerlike appendage. Palpi; the first segment short, stout, slightly swollen distally, the second nearly three times the length of the first, subrectangular, the third a little shorter and more slender than the second, the fourth a little longer and more slender than the third; face light brown. Mesonotum light brown, the submedian lines lighter and thickly clothed with yellowish setae; posterior median area yellowish; scutellum yellowish brown with sparse apical setae, postscutellum yellowish. Abdomen rather thickly clothed with fine setae, light yellowish brown, darker basally, genitalia yellowish. Wings hyaline, costa light brown; halteres yellowish basally, slightly fuscous apically. Legs a nearly uniform light brown, the pulvilli longer than the claws, the latter long, slender, strongly curved apically. Genitalia; dorsal plate short, broad, deeply and triangularly incised, the lobes 158 NEW: YORK STATE MUSEUM internally with a notch at the basal third, narrowly rounded; ventral plate rather long, broad, deeply and broadly emarginate, the lobes widely separated, narrowly rounded; style short, stout, broadly rounded. Female. Length 3 to 4mm. Antennae nearly as long as the body, sparsely haired, fuscous yellowish; fourteen segments, the fifth with a stem about one-third the length of the subcylindric basal enlarge- ment, which latter has a length twice its diameter; terminal seg- ment produced, with a length three times its diameter and apically with a short, stout process swollen basally. Palpi; first segment subquadrate, the second a little longer, stouter, the third fully twice the length of the second, rather stout, the fourth as long as the third. Mesonotum dark brown, the submedian lines fuscous yel- lowish. Scutellum and postscutellum fuscous yellowish. Abdomen dark reddish. Halteres yellowish transparent. Legs fuscous yellowish. Ovipositor short, the terminal lobes narrowly oval, with a length twice the width. Otherwise nearly as in the male. Described from females reared from resin masses on hard pine in association with a male, which latter compared very closely with Osten Sacken’s type in the Museum of Comparative Zoology. This female is not readily separated from that of Retinodiplosis inopis O.%., though the latter, judging from specimens reared in the bureau of entomology at Washington, is a larger and darker form and differs from the species under consideration by deserting the pitch prior to pupation. Parasites. This little insect in spite of its passing a large portion of its existence within pitch masses, is subject to parasitic attack. Miss Eckel, referred to above, has succeeded in rearing three species, as follows: Syntasis diplosidis Eckel, Polygnotus pinicola Ashm., and another belonging to the genus Eupelmus. This midge can hardly be considered of much economic import- ance, yet we have observed trees which were seriously weakened by an excessive flow of pitch inhabited largely by the larvae of this species, and we are therefore inclined to believe that in such cases the flow caused by the larvae may seriously weaken a tree. Retinodiplosis taxodii Felt 1916 Felt, E. P. Ent. News, 27:415-17 1918 ————_ N.Y. State Mus. Bul. 200, p. 19 A number of midges tentatively referred to this genus were reared April 27, 1916, by George W. Barber, Charleston, Mo., from cones of bald cypress, Taxodium distichum, the larvae occur- ring in thick-walled somewhat spongy monothalamous galls 5 to 7 REPORT OF THE STATE ENTOMOLOGIST 1918 159 mm in diameter and tightly packed in the cones. The galls are evidently modified or aborted seeds. Retinodiplosis inopis O. S. 1862 Osten Sacken, C.R. Mon. Dipt. Am., 1:196-97 (Cecidomyia) 1890 Packard, A.S. U.S. Ent. Comm., 5th Rep’t, p. 800 (Diplosis) 1891 Riley, C. V. & Howard, L. O. Insect Life, 4:126 (Polygnotus pini- cola Ashm. reared) 1906 Felt, E.P. N.Y. State Mus. Mem. 8, 2:752 (Cecidomyia) 1910 Smith, J.B. Insects N. J. List, p. 732 (Cecidomyia) 1911 Felt, E. P. Econ. Ent. Jour., 4:465 (Cecidomyia) 1912 — —— Econ. Ent. Jour., 5:368-69 (Itonida) 1913. ———— Econ. Ent. Jour., 6:331 (Itonida) 1918 ——— N.Y. State Mus. Bul. 200, p. 15 This midge produces obscure subcortical swellings (fig. 30a) in the smaller branches of the scrub pine, Pinus rigida and P. virginiana, spins cocoons on branches and needles (figs. 3cb, c) and occasionally becomes very abundant and somewhat injurious. The midges issue the latter part of May or early in June. This os — oS a Fig. 30 Retinodiplosis inopis: a, swollen shoot showing two exit holes; 6, young shoot bearing three cocoons; ¢, Pine needle bearing one cocoon species approaches the pitch midge, Retinodiplosis resin- icola O. S., from which it may be distinguished by its larger size, darker color and the shorter antennal stems of the male. The distal three antennal segments of the females are illustrated in figure 31. It is somewhat smaller than the western pitch midge, R. resinicoloides Wlms., a form easily separated by structural 160 NEW: YORK STATE MUSEUM characteristics. There is a difference in habit as well as color in the European Itonida pini DeG. All stages have been described by the writer (see the above citation). 4 ie (ERE Fig. 31 Retinodiplosis inopis, distal three antennal segments of female (enlarged, original) Retinodiplosis resinicoloides Wlms. 1909 Williams, F. X. Ent. News, 20:1-8 (Cecidomyia) 1910 ————— Ent. Soc. Am. Ann., 3:45-56 (Cecidomyia) 1gtt Felt, E.P. Econ. Ent. Jour., 4: 465 (Itonida) 1918 ——— N. Y. State Mus. Bul. 200, p. 16 This species, evidently closely allied to Retinodiplosis resinicola O.S., occurs in California in the resinous exudations of the Monterey pine, Pinus radiata. The midges, according to the observations of Mr Williams, were abroad in March, adults being plentiful in April. The soft, oblong REPORT OF THE STATE ENTOMOLOGIST 1918 161 orange-colored eggs are deposited in fissures at the base of rather soft, whitish resin lumps. Late in May exuviae showed that many adults had escaped while a few eggs were to be found. Infestation is most likely to occur in places where limbs have been sawed off, or in crevices filled with pitch. The larvae, prior to transformation, make a thin, papery cocoon, probably spinning in the same way as has been observed in Lasioptera. Male. Length 3 mm. Antennae about as long as the body, thickly haired, dark brown; fourteen segments, the fifth with stems three-fourths and one and one-half times their diameters; terminal segment, distal enlargement produced, with a length over twice its diameter, constricted near the basal third and with a long, tapering process apically, the latter with a length fully twice its diameter. Palpi; the first segment short, stout, subquadrate, the second rect- angular, with a length more than three times its diameter, the third a little longer, more slender, the fourth as long as the third, more slender. Mesonotum dull dark brown, the submedian lines sparsely haired. Scutellum reddish brown, postscutellum yellowish brown. Abdomen a dark yellowish brown; genitalia fuscous. Wings hyaline, costa pale brown; halteres pale yellowish. Coxae reddish brown, femora and tibiae yellowish brown, the tarsi slightly darker; claws long, stout, evenly curved, the pulvilli longer than the claws. Gen1- talia; dorsal plate short, broad, broadly and roundly emarginate, the lobes widely separated, narrowly rounded; ventral plate short, broad, scarcely tapering, broadly and roundly emarginate; style short, stout, narrowly rounded. Female. Length 3.5 mm. Antennae nearly as long as the body, thickly haired, dark brown; fourteen segments, the fifth with a stem one-fourth the length of the cylindric basal enlargement, which latter has a length about three times its diameter; terminal segment hardly produced, with a length about three times its diameter and apically with a rather long, tapering process; halteres yellowish basally, fuscous apically. Coxae dark brown, the femora and tibiae yellowish brown, darker apically, tarsi mostly dark brown. Ovipositor about one-third the length of the abdomen, the terminal lobes slender, narrowly oval, with a length fully three times the diameter. Other- wise nearly as in the male. Described from cotypes. Cecid. a1g30. Retinodiplosis palustris Felt 1915 Feit, E. P. Econ. Ent. Jour., 8:408-9 1918 —————_ N.Y. State Mus. Bul. 200, p. 16 This species was reared May 20, 1915, from pitch on twigs of the long-leaved pine collected by Dr J. J. Davis at Talladega, Ala. It is closely related to R. resinicoloides Wlms., from which it may be separated by the longer basal portion of the stem of the fifth antennal segment and the distinctly greater emargination of the ventral plate. 162 NEW YORK STATE MUSEUM Retinodiplosis albitarsis Felt 1918 Felt, E. P. Econ. Ent., Jour., 11:383-84 1918 —————_ N.Y. State Mus. Bul. 200, p 16 Both sexes of this midge were reared in June 1918 from a white pine branch infested with Parharmonia pini Kell. the se — Px ae Fig. 32 “Retinodiplosis albitarsis. Posterior extremity of larva showing the chitinized, spined tubercles which protect the posterior spiracles. exuded pitch masses being inhabited by larvae of this species apparently associated with those of Mycodiplosis packardi Fig. 33 Retinodiplosis albitarsis. Lateral aspect of dorsum of first and second abdominal segments of larva, showing the median. partly divided tubercle of the first segment and the more deeply divided one of the second segment. Felt. This species is easily recognized by the narrow white annula- tions on the legs and the three white distal segments of the posterior tarsi. PARALLELODIPLOSIS Rubs. 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 411 (as Clinodiplosis Kieff.) 1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:287; 16:120 REPORT OF THE STATE ENTOMOLOGIST 1918 163 1911 Felt, E.P.. N. Y. Ent. Soc. Jour., 19:61 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 228 This genus was proposed by Rubsaamen with Diplosis galliperda F. Lw. as type because it was found that the type of Clinodiplosis Kieff., C. cilicrus Kieff. has the anterior claws toothed. The species previously noticed by the writer as Clinodiplosis fall in this genus. Here belong a number of small, yellowish species which may be recognized by the simple claws, the quadriarticulate palpi, the lack of a conspicuous lobe or spine on the basal clasp segment and by the long, linear, usually narrowly rounded ventral plate. The simple basal node of the flagellate antennal segments of the male serves to separate members of this genus from Xenodiplosis Felt. The known females of American species have moderately short-stemmed, cylindric flagellate antennal segments and a usually short ovipositor with long, slender lobes. Several American species have been reared from leaf galls on Spiraea; one from the roots of a plant and another, P. caryae Felt, is probably an inquiline in various Caryomyia galls on hickory, Key to Species a Ventral plate long, slender, tapering slightly and narrowly rounded apically b Antennal segments with only two distinct enlargements, not trinodose c¢ Abdomen dark brown, length .75 mm...rubrascuta Felt, C. 93 cc Abdomen yellowish brown, length 1 mm; reared from leaves of scrub Reto EE ros pete syeircp ans lana S\at anne meee florida Felt, C. 978 ccc Abdomen yellowish with deep orange extremities, length 1 mm; reared from coiled leaf galls on spiraea................--...-.-- spirae Felt, C. a1838 bb Antennal segments more or less distinctly trinodose c Fifth antennal segment having the basal portion of the stem with a length twice its diameter d Abdomen pale orange, length 1.5mm...acernea Felt, C. 267 cc Fifth antennal segment having the basal portion of the stem with a length one-half greater than its diameter d Abdomen yellowish, the segments banded posteriorly and partially near the middle with brown e Length 2.5 mm, fifth antennal segment stems with a length one and one-half and three times the diameters, respec- tively, distal node strongly constricted; reared from glo- bose gall on hickory........ caryae Felt, C. 331, 1117 ee Length 1.5 mm, fifth antennal segment stems with a length one and one-half and two and one-half times the diameters _ respectively, distal node not strongly constricted see coryli Felt, C. 216 11 164 NEW YORK STATE MUSEUM aa Ventral plate long, slender, tapering distally b Dorsal plate rather long, triangularly emarginate, the lobes long and narrowly triangular c Abdomen pale yellowish or carmine, length 1 mm; fifth antennal segment having the stems with a length two and one-half and four times thetdiameters respectively. sane aaee see oe eae triangularis Felt, C. 428, 499 aaa Ventral plate long, rather stout, broadly rounded apically 6 Dorsal plate short, the lobes truncate c Abdomen dark red, the segments margined with fuscous, length I mm; fifth antennal segment having the stems with a length two and one-fourth and four times the diameters, respectively, trinodose: Mee aera we saietee subtruncata Felt, C. 506 cc Abdomen fuscous brown, length 1 mm; fifth antennal segment having the stems with a length one and one-half and three times the diameters, respectively........... montana Felt, C. 631 ccc Abdomen yellowish brown, length 1 mm; fifth antennal segment having the stems with a length twice and two and one-half times the diameters respectively .......... cinie taples: BeltwGy 1522 aaaa Ventral plate long, emarginate b Ventral plate tapering distally, roundly emarginate c Dorsal plate short, roundly emarginate, the fifth antennal segment having the stems with a length one and one-half and two and one-half times the diameters respectively; reared from roots of Cra tit Levyial -seihgvatom ae ewes: a: cattleyae Moll., C. 979 cc Dorsal plate short, narrowly and triangularly emarginate, the lobes produced laterally; abdomen yellowish, length 1 mm; fifth antennal segment having the stems with a length two and one- half and three and one-half times the diameters respectively. . rubisolita Felt, C. 656 ccc Abdomen pale yellowish, length 1 mm. Reared from oak bark. . ClO Licuiss helty Ca To75 bb Ventral plate long, slender, broadly emarginate c Dorsal plate triangularly emarginate, the lobes truncate d Abdomen reddish brown, length .75 mm; fifth antennal seg- ment having the stems with a length three and four times the diameters respectively........ extensa Felt, C. 228 bbb Ventral plate long, broad, scarcely tapering, very broadly emarginate c Dorsal plate short, triangularly emarginate, the lobes truncate d Abdomen a fuscous reddish brown, length 1.5 mm; fifth antennal segment having the stems equal, each with a length three and one-half times its diameter; the lobes of the dorsal plate*roundly truncates en... 4. se soe ee eee pratensis Felt, ©. 741 dd Abdomen fuscous yellowish, fifth antennal segment having the stems with a length two and one-half and three and one- half times the diameters respectively; the lobes of the dorsal plate broadly emarginate; reared from bud gall on spirea. . clarkeae Felt, C. a2074 REPORT OF THE STATE ENTOMOLOGIST 1918 165 ddd Abdomen reddish brown, length 1.25 mm; fifth antennal seg- ment having the stems with a length one and one-half and two and one-half times the diameters respectively. ....... carpini Felt, C. 347 Paralleiodiplosis rubrascuta Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 142-43; separate, p. 46 (Cecidomyia) 1908 ————_ N.Y. State Mus. Bul. 124, p. 411 (Clinodiplosis) The dark-red male was taken June 1, 1906 on ash, Fraxinus, at Albany, N. Y. Male. Length .75 mm. Antennae about twice the length of the body, thickly haired, yellowish brown; fourteen segments, the fifth with stems one and two times their diameters respectively; terminal segment, the distal enlargement thickened, slightly prolonged and a tapering, fingerlike apex. Palpi; the first segment short, irregularly subquadrate, the second twice the length of the first, rather stout, the third one-fourth longer than the second, slender, the fourth about as long as the third, more slender, face dark brown. Mesono- tum with the anterior median and posterior sublateral lobes dark brown, the intermediate spaces lighter. Scutellum reddish brown, postscutellum dark brown. Abdomen dark brown, sparsely clothed with yellowish hairs. Wings (pl. 15, fig. 3) hyaline, costa light brown; halteres yellowish transparent. Legs slightly variable, pale straw color, femora somewhat darker apically; claws slender, strongly curved. Genitalia (pl. 20, fig. 3); dorsal plate broad, deeply and narrowly incised, the lobes moderately well separated, tapering, the external posterior angle slightly produced, the submedian posterior margin truncate, each lobe with several large, stout setae; ventral plate very long, slender, broadly rounded; style long, slender, acutely rounded. Type Cecid. 93. Parallelodiplosis florida Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 411 (Clinodiplosis) 1918 ———— N. Y. State Mus. Bul. 200, p. 82 This yellowish brown male was reared January 24, 1883 from leaf galls on the round-leafed scrub oak, Quercus, at Georgiana, Fla. The living insect, according to Pergande, is orange-colored, the antennae dusky and the mesonotum with a broad, black stripe, the posterior margin of the abdomen somewhat brownish. Gall. Pocketlike swellings along the midrib, grayish yellow in color and each containing one or two orange-colored larvae. Male. Length 1 mm. Antennae nearly twice the length of the body, thickly haired, pale yellowish; fourteen segments, the fifth with stems one and one-half and two times their diameters, respec- tively; terminal segment, distal enlargement produced, subconical, with a length nearly three times its diameter, tapering to a short, 166 NEW YORK STATE MUSEUM slender, narrowly rounded apex. Palpi missing. Mesonotum red- dish brown, the yellowish submedian lines sparsely haired. Scu- tellum yellowish, postscutellum yellowish orange. Abdomen thickly haired, yellowish brown; genitalia yellowish. Wings hyaline, costa dark brown. Halteres pale yellowish. Coxae mostly a yellowish straw, the distal tarsal segments on the anterior and mid legs reddish brown; claws long, slender, evenly curved, the pulvilli about as long as the claws. Genitalia; dorsal plate short, stout, deeply and triangularly incised, the lobes somewhat divergent, roundly emar- ginate, the lateral angles somewhat produced, each posterior angle with a long, stout seta; ventral plate long, slender, narrowly rounded; style long, rather stout, narrowly rounded. Type, Cecid. 978. Parallelodiplosis spirae Felt 1909 Felt, E. P. Econ. Ent. Jour., 2:293 (Clinodiplosis) 1918 ———— N.Y. State Mus. Bul. 200, p. 134 The pale yellowish midge with the extremity of the abdomen deep orange was feared the latter part of July and early in August from a variable yellowish or reddish, marginal roll occurring on the half-grown leaves of Spiraea salici- folia taken by Cora H. Clarke June 26, 1909 at Magnolia, Mass. This gall was observed in Albany June 5, 1908. The galls (fig. 34) are very variable, yellowish or red- dish, marginal leaf rolls some 3 mm long on the young leavesof Spiraea salicifolia and frequently assuming such fantastic shapes as to lead Miss Clarke to designate the deformity as a ram’s horn or Vienna Fig. 34 Par- crescent gall. eg ae Larva. Length 2.5 mm, yellowish. Head small, an- Se ee ees tennae rather long, tapering. Breastbone irregularly ks eo bidentate and consisting simply of a rather weakly oe & chitinized, somewhat expanded anterior portion, the posterior part obsolete. Skin nearly smooth, the pos- terior extremity broadly rounded and finely shagreened. Male. Length 1 mm. Antennae one-half longer than the body, thickly haired, reddish brown; fourteen segments, the fifth with stems two and two and one-half times their diameters respectively; terminal segment produced, the distal enlargement cylindric, with a length nearly three times its diameter and an irregular, fingerlike process apically. Palpi; the first segment short, irregular, the second with a length three times its diameter, tapering slightly, the third as long as the second, more slender, the fourth a little longer and more slender than the third. _Mesonotum reddish brown, the sub- median lines sparsely haired. Scutellum yellowish red, postscu- tellum fuscous. Abdomen yellowish with deep orange extremities, the segments margined posteriorly with dark chitin and with rudi- REPORT OF THE STATE ENTOMOLOGIST 1918 167 mentary lateral bands at the posterior third. Genitalia yellowish. Wings hyaline, costa fuscous yellowish. Halteres whitish basally, pale yellowish apically. Coxae and femora basally pale yellowish, remainder of the legs fuscous yellowish; claws long, slightly curved, the pulvilli rudimentary. Genitalia; dorsal plate short, broad, deeply and narrowly emarginate, the lobes broadly and roundly emarginate, the lateral angles slightly produced, setose; ventral plate long, slender, tapering slightly, narrowly rounded; style long, stout, narrowly rounded. Female. Length 1.25 mm. Antennae nearly as long as the body, sparsely haired, dark brown, yellowish basally; fourteen segments, the fifth with a stem one-third the length of the cylindric basal enlargement, which latter has a length three times its diameter, and is slightly constricted near the basal third; terminal segment produced, cylindric, with a length four times its diameter and apically with a short, fingerlike projection. Palpi; long, yellowish, the first segment short, subquadrate, the second with a length three times its diameter, the third a little longer, more slender, the fourth one- fourth longer than the third, more slender. Mesonotum dark reddish brown, the submedian lines yellowish, sparsely haired. Scutellum yellowish brown, postscutellum yellowish. Abdomen sparsely haired, yellowish, the extremities reddish brown; the segments margined posteriorly with a narrow fuscous sclerite and with a rudimentary one near the middle laterally. Wings hyaline, costa dark brown. Halteres whitish basally, light fuscous apically. Coxae and femora basally yellowish, the distal portion of femora, tibiae and tarsi mostly dark brown; claws slender, slightly curved, the pulvilli rudimentary; ovipositor short, yellowish, the lobes extremely slender, with a length seven times their width. Type Cecid. a1838. Parallelodiplosis acernea Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 143; separate, p. 46-47 (Cecidomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 411 (Clinodiplosis) IQI5 — N. Y. State Mus. Bul. 175, pl. 2, fig. 12 1918 ———— N.Y. State Mus. Bul. 200, p. 150 This pale orange male was taken June 14, 1906 on red maple, mice ruapru im, at Nassau, N. Y. Male. Length 1.5; mm. Antennae one-fourth longer than the body, rather thickly haired, light brown, yellowish basally; fourteen slightly trinodose segments, the fifth with stems two and two and one-half times their diameters, respectively; terminal segment, distal enlargement greatly produced, subcylindric and with an apical spindle-shaped appendage about three-fourths as long. Palpi; the first segment subrectangular, the second nearly twice the length of the first, rounded at the extremities, the third and fourth, each successively a little longer, more slender than the third; face pale yellowish, eyes large, black. Mesonotum dark brown, submedian lines pale yellowish, sparsely ornamented with fine setae. Scutellum 168 NEW YORK STATE MUSEUM somewhat fuscous yellowish with sparse apical setae, postscutellum and abdomen pale orange, the latter slightly tinged dorsally with fuscous and rather sparsely clothed with fine, whitish hairs, genitalia pale orange. Wings (pl. 15, fig. 5) hyaline, costa light brown; halteres yellowish transparent. Legs nearly uniform pale straw, tarsi somewhat darker; claws rather short, stout, gently curved. Genitalia; dorsal plate broad, short, deeply and narrowly incised, the lobes approximate, subtruncate, the latero-posterior angles produced, broadly rounded, the distal margin with several long, stout setae; ventral plate very long, slender, narrowly rounded; style stout, long, narrowly rounded. Female. Length 1.5 mm. Antennae nearly as long as the body, sparsely haired, fuscous straw; fourteen segments, the fifth with a stem one-third the length of the cylindric basal enlargement, which latter has a length about three times its diameter; terminal segment produced, with a length four times its diameter and apically with a long, fingerlike process. Palpi; first segment irregular, second nar- rowly oval, the third one-half longer, more slender, the fourth a little longer and more slender than the third; face fuscous yellowish. Mesonotum yellowish brown, the submedian lines sparsely -haired. Scutellum and postscutellum pale yellowish. Abdomen reddish orange, sparsely setose. Costa dark brown. Halteres pale yellowish, slightly fuscous subapically. Coxae and femora basally yellowish transparent, the distal portion of femora, tibiae and tarsi mostly a light fuscous; claws stout, evenly curved, the pulvilli about half the length of the claws. Ovipositor about two-thirds the length of the abdomen, the terminal lobes narrowly elliptical, with a length fully four times the width. Type Cecid. 267. Reared August 16, t910 from a jar containing numerous choke- cherries deformed by Contarinia virginianiae Felt, Parallelodiplosis caryae Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 141-42; separate p. 45 (Cecidomyia) 1908 ——— N. Y,. State, Mus) Bul. 124) p.. 411) (Clinodiplosis) 1909 ————— Econ. Ent. Jour., 2:293 (Clinodiplosis) TOlSs NPE tase Mitisi bul. 200,195 a This insect was first taken on hickory at Albany, June 19, 1906, females being captured the 22d. The correctness of our associating this species with hickory is shown by its having been reared from a hickory leaf gall by the late Dr M. T. Thompson and subsequently in this office. The adults undoubtedly fly in early June and apparently they occur in at least two kinds of galls, possibly as inquilines. Gall. The species was reared by Doctor Thompson from a deformity which he characterizes as the most curious gall he ever found. It appears first as a brownish blistered area on the leaf with REPORT OF THE STATE ENTOMOLOGIST 1918 169 a slight central point and as it develops the circular cap is lifted up and borne on the top of the gall. At this stage the gall is hemispheric, attached to the leaf by a point on its convex under surface, while the flat top is covered with an epithelial plate. The rim of the gall is slightly raised, forming a low wall around the upper area. Many of the galls never develop further, while the rims on others continue to grow at several points until the upgrowths, bend inward, meet and inclose a sort of upper chamber above the real top of the gall. This latter is empty, as the larva lives in the large cavity beneath. Three females of this species were reared by us May 1s and 17, 190g from a globular, thin-walled, monothalamous, long-haired, hickory leaf gall much resembling the typical C. persicoides gall. Exuvium. Length 2 mm, whitish, slender; antennal cases long, slender, acute apically, the internal basal angle somewhat slightly chitinized; cephalic horns long, slender. Wing cases extending to the fifth abdominal segment, the leg cases to the apex of the abdomen; dorsum of the abdomen with the segments margined posteriorly with an irregular row of stout, simple or compound spines, the remainder of the surface being mostly dotted with fine, chitinous points. Male. Length 2.5 mm. Antennae one-fourth longer than the body, sparsely haired, light brown; fourteen segments, the third to the fourteenth trinodose, the fifth with stems one and one-fourth and three and one-half times their diameters respectively; terminal segment, distal enlargement with a length three times its diameter and a long, tapering, fingerlike appendage distally. Palpi; first segment short, subquadrate, the second one-half longer, stout, the third one-half longer than the second, more slender, the fourth a little longer than the third. Mesonotum brown, yellowish at the apex. Scutellum reddish. Abdomen yellow, the segments mar- gined posteriorly with dark brown and with a short, transverse brown line near the middle. Wings (pl. 15, fig. 6) hyaline, costa dark brown; halteres yellowish. Legs yellowish basally, the tibiae and tarsi brown; claws long, strongly curved distally, the pulvilli rudimentary. Genitalia (pl. 17, fig. 1); dorsal plate short, broad, deeply and narrowly incised, the lobes obliquely truncate, ventral plate long, tapering slightly, a narrowly rounded apex; style long, slender, acute. Female. Length 2.25 mm. Antennae as long as the body, rather thickly haired, dark brown; fourteen segments, the fifth binodose, the irregular stems two and two and one-half times their diameters, respectively; basal enlargement narrowly oval and with an irreg- ular double whorl of long, stout setae; distal enlargement produced, expanded apically, with a length twice its diameter and low circum- fila basally and apically. There is also a scattering whorl of slender setae. Distal segments cylindric, with a short stem, the fourteenth 170 NEW YORK STATE MUSEUM with a long, fingerlike appendage apically and a broad band of slender, strongly curved setae. Palpi yellowish, the first segment rather long, stout, the second one-half longer, stout, the third one- fourth longer than the second, slender, the fourth a little longer than the third, slender. Mesonotum shining dark brown, the broad, yellowish submedian lines and posterior median area yellowish, the former sparsely haired. Scutellum pale orange, postscutellum yellowish. Abdomen yellowish orange, the segments margined posteriorly with brown chitin and near the middle a rudimentary band of the same, the latter with submedian interruptions, the sixth segment mostly brown. Wings hyaline, costa dark brown. Halteres pale orange, slightly fuscous subapically. Coxae and femora mostly yellowish, tibiae and tarsi a variable dark brown, the latter some- what lighter; claws long, slender, irregularly curved, the pulvilli rudimentary. Ovipositor one-half the length of the abdomen, stout, the terminal lobes slender, with a length six times their width. Type 'Cecids331- Paralielodiplosis coryli Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 142; separate, p. 46 (Cecidomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 411 (Clinodiplosis) This pale orange male was taken June 11, 1906 on hazel, Cory- ins americanus) at Albany, IN: Y- Male. Length 1.5 mm. Antennae a little longer than the body, thickly haired, light brown; fourteen segments, the fifth with stems one and one-half and two times their diameters, respectively; ter- minal segment, distal enlargement greatly prolonged, subcylindric apically a spindle-shaped, thickly haired appendage. Palpi, the first segment irregularly subquadrate, the second twice the length of the first, slightly swollen at the basal third, the third about as long as the second, more slender, the fourth a little longer than the third and much more slender; face sooty yellow. Mesonotum dark brown, dark reddish laterally, submedian lines yellowish, ornamented with fine setae. Scutellum reddish basally, slightly fuscous apically, sparsely setose, postscutellum dark yellowish. Abdomen pale yellowish orange, sparsely clothed with fine, yellowish hairs, each segment narrowly margined with fuscous posteriorly and with short, dark, transverse lines on each side just behind the middle. Wings hyaline, costa dark brown; halteres whitish transparent basally, yellowish apically. Coxae and basal portion of femora pale straw yellow, the other parts of the legs nearly uniform sooty yellowish or brownish; claws slender, evenly curved. Genitalia; dorsal plate broad, deeply and narrowly incised, the lobes roundly truncate, the lateral angles prolonged, narrowly rounded; ventral plate long, slender, broadly rounded; style long, slender, narrowly rounded. Type Cecid. 216. REPORT OF THE STATE ENTOMOLOGIST 1918 171 Parallelodiplosis triangularis Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 411 (Clinodiplosis) The light-brown males of this species were taken July 2 and 6, 1906, at Nassau, N. Y. Male. Lengthri1mm. Antennae one-fourth longer than the body, thickly haired, light brown, fuscous basally; fourteen segments, the fifth with stems each two and one-half times their diameters; ter- minal segment, distal enlargement produced, subcylindric and with a spindle-shaped appendage. Palpi; the first segment subquadrate, the second long, rather broad, the third a little shorter, more slender, the fourth one-fourth longer than the second, more slender. Face fuscous. Mesonotum dark brown, submedian lines pale yellow. Scutellum fuscous yellowish, postscutellum light brown. Abdomen light brown; terminal segments yellowish, thickly haired. Wings hyaline, costa light brown. Genitalia; dorsal plate broad, deeply and triangularly incised, the lobes narrowly triangular; ventral plate long, slender, truncate; style stout at the base, long, tapering, con- stricted subapically. Type Cecid. 428. Parallelodiplosis subtruncata Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 140; separate, p. 44 (Cecidomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 412 (Clinodiplosis) This dark-red form was taken at Albany, N. Y., July 6, 1906 while collecting on goldenrod or Solidago and aster. Male. Length 1 mm. Antennae one-half longer than the body, thickly haired, dark brown, fuscous yellowish basally; fourteen segments, the fifth with stems two and one-half and four times their diameters; terminal segment, distal enlargement prolonged, subcylindric, tapering to a spindle-shaped appendage. Palpi; the first segment rather short, irregularly rectangular, the second more than twice the length of the preceding, stout, tapering slightly distally, the third as long as the second, more slender, subfusiform, the fourth a little longer, more slender; face fuscous yellowish. Mesonotum dark brown, submedian lines yellow, uniting posteriorly in a median yellowish area. Scutellum dark red, postscutellum yellowish. Abdomen dark red, the segments margined posteriorly with fuscous, sparsely clothed with pale setae. Wings hyaline, costa light brown; halteres yellowish. Coxae and basal portion of femora pale yellowish, remainder of femora, tibiae and basal segment of tarsi fuscous brown, 3 distal segments yellowish, variably tinged with carmine; claws rather stout, strongly curved. Genitalia (pl. 20, fig. 7); dorsal plate short, broad, deeply, narrowly and roundly emarginate, the lobes well separated, the sublateral margin obliquely truncate, the submedian truncate; ventral plate narrow, long, tapering, irregularly truncate; style long, stout, narrowly rounded. Type Cecid. 506. NEW YORK STATE MUSEUM 4 NI bo Paralielodiplosis montana Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 412 (Clinodiplosis) This fuscous brown male was taken July 20, 1906 Sweeping grasses and sedges at Newport, N. Y. Male. Length 2mm. Antennae probably longer than the body, thickly haired, dark brown; fourteen segments, the fifth with stems one and one-half and three times their diameters, respectively. Palpi; the first segment subquadrate, second with a length three times its width, tapering distally, the third a little longer than the second, more slender, the fourth longer and more slender than the third. Mesonotum dark brown, submedian lines indistinct, scu- tellum yellowish brown; postscutellum and abdomen fuscous brown, the latter thickly setose; genitalia yellowish. Wings hyaline, costa yellowish brown; halteres pale yellowish. Legs mostly dark brown; claws long, slender, evenly curved, the pulvilli about half the length of the claws. Genitalia; dorsal plate short, deeply and narrowly incised, the lobes obliquely truncate; ventral plate long, truncate; style long, taperingy Type Cecid: 62\1; Paralielodiplosis cinctizes Felt 1914 Felt, E.P. Psyche 20:113 This midge was reared by Mr C. A. Frost, Framingham, Mass. in May 1908 from dead twigs of Rhus vernix. Parallelodiplosis cattleyae Moll. 1891 Riley, C. V. & Howard, L.O. Insect Life 3:22 (Diplosis) 1902 Molliard, Marin. Marcellia, 1:165-71 (Cecidomyia) 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 412 (Clinodiplosis) 1911 Theobald, F. V. Rep’t Econ. Zool., p. 105-7 (Cecidomyia) OMS) =a IN NE, SUBS MULES 3 itl ZOO), jo, AS) These reddish midges were reared May 20, 1890 from roots of Cattleya gigas received from A. P. Morse, South Natick, Mass., by the bureau of entomology, Washington, D. C. Gall. There is no description of the deformity. The larvae appear to simply occur in the roots. Larva. Yellow or pale orange with a brown breastbone. Exuviae. Length 2.5 mm, whitish transparent. Antennal cases extending to the second thoracic segment, wing cases to the second abdominal segment; thoracic horns long, tapering. Dorsum of abdominal segments 1 to 7 with a short, transverse, irregularly double row of rather stout, triangular spines. Male. Length 2 mm. Antennae probably nearly as long as the body, sparsely haired, black; fourteen segments, the fifth with stems having a length one and one-half and two and one-half times their diameters respectively. Palpi; the first segment probably quadrate, the second broadly oval, with a length one-half greater than its REPORT OF THE STATE ENTOMOLOGIST 1918 178 diameter, the third longer, the fourth probably as long as the third. Color red, with a faint, dusky shade (Pergande). Wings hyaline costa yellowish brown. Genitalia; dorsal plate short, roundly emar- ginate; ventral plate long, deeply and roundly emarginate, the lobes narrowly rounded; style long, slender, narrowly rounded. Female. Length 2.5 mm. Antennae nearly as long as the body, sparsely haired, black; fourteen segments, the fifth with a stem three-fourths the length of the cylindric basal enlargement, which latter has a length two and one-half times its diameter; terminal segment produced, the basal enlargement with a length three and one-half times its diameter, apically a fingerlike process. Palpi; first segment subquadrate, the second narrowly oval, with a length over twice its width, the third a little longer than the second, more slender, the fourth one-half longer than the third, dilated. Color black. Ovipositor short, the terminal lobes narrowly oval (Per- gande) subacute. Cecid. 979. Parallelodiplosis rubisolita Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 412 (Clinodiplosis) This yellowish transparent male was taken July 24, 1906 on low blackberry, Rubus villosus, at Albany, N. Y. Male. Length 2 mm. Antennae a little longer than the body, thickly haired, light brown; fourteen segments, the fifth with stems two and one-half and three and one-half times their diameters, respectively; terminal segment, distal enlargement with a length twice its diameter and apically bearing a slender, fingerlike process. Palpi; first segment narrowly oval, the second slender, with a length four times its width, the third a little longer, more slender, the fourth as long as the third. Body a nearly uniform yellowish trans- parent. The hyaline wings with a yellowish cast. Legs yellowish, the distal tarsal segments light brown; claws slender, very strongly curved, the pulvilli shorter than the claws. Genitalia; dorsal plate short, deeply and triangularly incised, the lobes angularly truncate; ventral plate long, broadly and roundly emarginate, the lobes nar- rowly rounded; style long, slender. Type Cecid. 656. Parallelodiplosis corticis Felt 1915 Felt, E. P. Econ. Ent. Jour., 8: 407 1918 ————— N.Y. State Mus. Bul. 200, p. 54 This pale yellowish form was reared by the late Dr C. V. Riley from larvae occurring in oak bark. Nothing further is known con- cerning the life history of this species. Parallelodiplosis extensa Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 412 (Clinodiplosis) This reddish brown male was taken June 11, 1906 on locust: Robinia pseudo-acacia, at Albany, N. ys 174 NEW YORK STATE MUSEUM Male. Length .75 mm. Antennae fully twice as long as the body, thickly haired, pale brown; fourteen segments, the fifth with stems two and two and one-half times their diameters, respectively. Palpi; the first segment subrectangular, swollen distally, the second twice the length of the preceding, fusiform, the third a little shorter, more slender, the fourth a little longer than the third, stouter. Mesonotum rather dark brown, submedian lines with sparse setae. Scutellum yellowish brown. Abdomen somewhat variable reddish brown with the terminal segment and pleurae yellowish, rather thickly clothed with yellowish white hairs, specially laterally. Wings hyaline, costa light brown; halteres yellowish transparent. Legs a nearly uniform pale straw color with the articulations tinged with carmine; claws slender, strongly curved at the distal fourth. Geni- talia; dorsal plate broad, deeply and triangularly incised, the lobes well separated, obliquely and irregularly truncate, the lateral angles and a slightly produced middle angle, each with a stout apical seta; ventral plate long, slender, broadly and triangularly emarginate, the lobes short, stout, obtuse; style long, slender, swollen at the distal fourth, narrowly rounded. Type Cecid. 228. Parallelodiplosis pratensis Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 412 (Clinodiplosis) This dark reddish brown male was taken August 6, 1906 on Pine, Ems «str @)b Wiss cat elbatny- aN Y= Male. Length 1.5; mm. Antennae fully one-fourth longer than the body, thickly haired, dark brown; fourteen segments, the fifth with stems each with a length three and one-half times its diameter. Palpi; first segment subquadrate, the second one-half longer than the first, the third a little longer than the second, more slender, the fourth more slender and one-half longer than the third. Face fuscous. Mesonotum light brown, submedian lines fuscous yellow- ish. Scutellum reddish brown, postscutellum fuscous yellowish. Abdomen fuscous reddish brown, the segments margined posteriorly with fuscous. Genitalia fuscous yellowish. Wings hyaline, costa light brown. Halteres pale yellowish. Legs fuscous straw the distal tarsal segments lighter; claws stout, strongly curved. Geni- talia; dorsal plate short, deeply incised, the lobes widely separated, roundly truncate; ventral plate long, narrow, slightly emarginate, the lobes broadly rounded; style long, slender, swollen at the basal and apical fourths, acutely rounded. Type Cecid. 741. Parallelodipiosis carpini Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 135; separate, p. 38-39 (Clinodiplosis) 1908 ————— N. Y. State Mus. Bul. 124, p. 412 (Clinodiplosis) This reddish brown male was taken June 21, 1906 on ironwood, Carpinws ca colimiania,, pay Albeanya N wy REPORT OF THE STATE ENTOMOLOGIST 1918 175 Male. Length 1.25 mm. Antennae one-fourth longer than the body, thickly haired, light brown, fuscous yellowish basally; fourteen segments, the fifth with stems one and one-half and two and one-half times their diameters, respectively; terminal segment, the distal portion produced, subcylindric and with a long, slender, fusiform appendage. Palpi; first segment short, the second one-half longer, stout, the third a little longer and more slender than the second and the fourth longer than the third. Face fuscous yellowish. Mesonotum dark brown or black, the submedian lines pale, sparsely haired. Scutellum dark orange, sparsely setose apically, postscu- tellum fuscous orange. Abdomen reddish brown with the pleurae and terminal segments dark yellowish, rather thickly clothed with yellowish setae. Wings (pl. 15, fig. 7) subhyaline, costa dark brown; halteres yellowish transparent basally, slightly fuscous apically. Legs brownish, yellowish red basally, lighter ventrally; claws strongly curved. Genitalia; dorsal plate broad, deeply incised, the lobes broadly rounded; ventral plate long, narrow, slightly emar- ginate, the lateral angles produced as setose tubercles; style extending to the tip of the terminal clasp segment. Type Cecid. 347. Parallelodiplosis clarkeae Felt 1911 Felt, E,P. Econ. Ent. Jour., 4:553-54 1918 — N.Y. State Mus. Bul. 200, p. 133 A number of the yellowish males and females were reared Sep- tember 19, 1910 from a narrow, clustered, apical, bud gall on Sprratea salicitolia collected in August. 1910 by Cora H: Clarke at Magnolia, Mass. This species appears most closely allied to C. pratensis Felt, though it is easily separated by the broadly emarginate lobes of the dorsal plate. It is possibly an inquiline, Gall. Length 7 mm, diameter 3 mm. This appears to be some- what intermediate in character between the chestnut burr gall and the ordinary bud gall observed upon this shrub. The aborted leaves in this gall are slender, numerous, somewhat approximate and present a superficial resemblance to the fringed or chestnut burr gall. ITONIDA Meign. Cecidomyia Meign. Diplosis H. Lw., Cryptodiplosis Kieff. 1800 Meigen, J. W. Nouv. Class. des Mouches 4 deux Ailes, p. 19 1803 ———— [Illiger’s Mag., 2:261 (Cecidomyia) 1804 ————— Klassification (Cecidomyia) 1818 ————— Beschr. Eur. Zweifl. Ins., 1:73 (Cecidomyia) 1820 Billberg, G. H. Enumeratio Insectorum, p. 122 (Cecidomyia) 1834 Macquart, P.M. Hist. Ins., 1:159 (Cecidomyia) 1840 Westwood, J. O. Introduct. Class. of Ins. Syn., p. 126 (Cecidomyia) 1846 Rondani, Camillo. Nouv. Ann. Sci. Nat. Bologna, S. 2, 6:371 (Cecidomyia) 176 NEW YORK STATE MUSEUM 1847. Bremi, J. J. Beitr. Mon. Gallmiicken, p. 5 (Cecidomyia) 1850 Loew, H. Dipt. Beitr., 4:20 (Diplosis) 1851 Meigen, J. W. Syst. Beschr. Eur. Zweifl., 1:73 (Cecidomyia) 1853 Winnertz, J. Linn. Ent. 8:137, 246 (Diplosis) 1861 Rondani, Camillo. Atti Soc. Ital. Sci. Nat. Milano, v. 2, sep. p. 4 (Diplosis) 1862 Osten Sacken, C.R. Mon. Dipt. N. A., 1:76 (Diplosis) 1863 Schiner, J.R. Fauna Austriaca Dipt., 2:382 (Diplosis) 1876 Bergenstamm, J. E. & Low, Paul. Syn. Cecidomyidarum, p. 23 (Cecidomyia) 1877. Karsch, F. A. F. Revis. Gallmiicken, p. 19 (Cecidomyia) 1888 Skuse, F. A. A. Linn. Soc. N. S. Wales Proc., 3:36, 37, 38, 42, 43, 60, 61 (Diplosis) 1892 Kieffer, J. J. Wien. Ent. Zeit., 11:218 (Diplosis) 1892 Rubsaamen, E.H. Berl. Ent. Zeit., 37:384 (Diplosis) 1892 Theobald, F. V. Acct. Brit. Flies, p. 50, 75 (Diplosis) 1895 Kieffer, J. J. Soc. Ent. Fr. Bul., 64:194 (Cryptodiplosis) 1895 Rubsaamen, E.H. Ent. Nachr., 21:186 (Diplosis) 1896 Kieffer, J. J. Wien. Ent. Zeit., 15:96 (Cryptodiplosis) 1897 ————— Syn. Cecid. Eur. & Alg., p. 41 (Diplosis) y 1900 ————— Soc. Ent. Fr. Ann., 69:436, 446 (Diplosis) 1901 Osten Sacken, C. R. Ent. Mon. Mag., ser. 2, 12:40 —-43 (Cecidomyia) 1907 Bezzi, Mario. Wien. Ent. Zeit., 26:56 1908 ————— Marcellia, 7:11 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 412 (Cecidomyia) 1908 Hendel, Fried. Verhandl. k. k. zool. bot. Ges. Wien., 58: 49-50 1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:286 (Cecidomyia) 1911 Felt, E.P. N.Y. Ent. Soc. Jour., 19:61 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 258 This, the oldest genus of the family, originally comprised all forms referred to the very generally known Cecidomyiidae, now Itonididae, and from about 1850 to 1890 or thereabouts there has been a lament- able disagreement as to the genus. Some dipterologists of note have held that Dasyneura or Perrisia and its allies were the true Cecid- omyias, or Itonidas, while others have maintained with equal insis- tenee that since Cecidomy ia Jor I tomuidia “pan eG: was the type, this generic designation should be limited to forms having the Diplosid structure. The genus Diplosis, erected by Loew in 1850 for forms having binodose antennae in the male, has been made a synonym of Cecidomyia, later giving way to Itonida, and the genera formerly grouped under this latter designation, are now referred to Dasyneura or Perrisia and other genera. The necessity of this change is regrettable, since Diplosis has been invariably applied to certain insects having well defined general REPORT OF THE STATE ENTOMOLOGIST 1918 177 characteristics, while as earlier stated, there has been a wide diver- gence of opinion as to species which should be grouped under Cecidomyia. The generic characters of Itonida must be found in its type, Tipula pini DeG. The following are the essential characters which we have been able to glean here and there from keys and published descriptions of this insect. Antennae with fourteen segments, the flagellate of the male bino- dose, the nodes distinctly unequal. Circumila well developed. The palpi are quadriarticulate, the three distal segments subequal. The wing, as illustrated by Rubsaamen, has subcosta uniting with costa before the basal third, the third vein joining the margin well beyond the apex, the fifth uniting with the posterior margin at the distal third, its branch near the basal third. Kieffer states that costa is interrupted behind its union with the third vein. The pulvilli are longer than the claws and the dorsal and ventral plate of the male genitalia deeply bilobed. The ovipositor of the female, as illustrated by Rubsaamen, is rather long, stout, the terminal lobes long, narrowly oval, distinctly contracted basally, the minor lobes short and stout. This genus, as at present restricted, comprises a large number of midges having simple claws, the third vein uniting with costa beyond the apex and not presenting characters peculiar to the preceding genera. The species placed here appear to live largely in leafy tissues. Key to species a Ventral plate long b Ventral plate broadly and roundly emarginate, the lobes diverging strongly c Fifth antennal segment having the basal portion of the stem with a length less than its diameter, the circumfila indistinct or wanting d Abdomen fuscous yellowish, length .75 mm, fifth antennal segment with the stems one-half and two and one-half the length of fhemdiameters. .0....2..oc0e8 me infirma Felt, C. 299 dd Abdomen yellowish brown, length .75 mm, fifth antennal segment with the stems three-fourths and one and one-fourth the length of their diameters. ......-..------ paucifili Felt, C. 297 cc Fifth antennal segment having the basal portion of the stem with a length greater than its diameter, the circumfila distinct d Abdomen pale yellowish, fifth antennal segment with the stems nearly equal, each about ‘three and one-half times the diameter e Length 1.5 mm; dorsal plate triangularly emarginate, the lobes broadly truncate......-.--+ssersece etter estes americana Felt, C. 420, a 694 78 NEW YORK STATE MUSEUM ee Length 1.5mm; dorsal plate deeply emarginate, the lobes produced laterally and roundly emarginate; reared from fleshy leat gallvongAmelanchier.. 2/0) =i es race oie canadensis Felt, C. a1859 eee Length 1 mm; dorsal plate lobes diverging, rounded....... recurvata Felt; C. 361 eeee Length .75 mm; dorsal plate roundly emarginate, the lobes hardly diverging, obliquely truncate............ wale paras fragariae Felt, C. 328 dd Abdomen yellowish red, length .75 mm; dorsal plate short, tri- angularly emarginate, the lobes obliquely truncate; fifth antennal segment having the stems two and one-half and three times their diameters........emarginata Felt, C. 421, 34 ddd Abdomen dark brown, length 1 mm; dorsal fifth antennal seg- ment having the stems three and four and one-half times their Giametersy i tainet sees oe tet oe ruricola Felt, C. 293 bb Ventral plate deeply and roundly emarginate, the lobes not diverging strongly c Fifth antennal segment having the stems equal or nearly so d Lobes of the ventral plate diverging apically : e Abdomen dark brown, length 1 mm; fifth antennal segment having the stems each with a length three and one-half times its diameter.......... apicalis Felt, C. 409, 367 dd Lobes of the ventral plate nearly parallel, not diverging apically e Lobes of the dorsal plate not strongly diverging f Lobes of ventral plate slender g Abdomen pale yellowish orange or yellowish brown, length 1 mm; fifth antennal segment having the stems each with a length three and one-half timesptskdiametensan. 5.25 saree an aCe ee agraria Felt, C. 247, 621, 626, 632 gg Abdomen dark yellowish brown, length .75 mm; fifth antennal segment having the stems with a length three and three and one-half times their diametersse maa: ce ae terrestris Belt (Ci 379 ggg Abdomen dull red, length 1 mm; fifth antennal seg- ment having the stems each with a length three and one-half times their diameter; fourth palpal sepment as\long as thei third) 3 .5..5-050e eee sanguinia Felt, C. 385 gggg Abdomen reddish orange, length 1 mm; fifth anten- nal segment having the stems each with a length two and one-half times their diameters; fourth palpal segment one-fourth longer than the third; reared) fromuanvappleyap hides wien aphidivora Felt, a2316a ff Lobes of ventral plate short, stout g Abdomen dark brown, length 2 mm; fifth antennal segment, stems each with a length two and one- half: timesvitsidiameters 5.) cn see eee ee ae apralis Belt iC. 144 REPORT OF THE STATE ENTOMOLOGIST 1918 179 ee Lobes of the dorsal plate strongly divergent f Abdomen pale yellowish, length 1.25 mm; fourth palpal segment three-fourths longer than the third, the fifth antennal segment having the two parts of the stem with a length three and three and one-half times their diameters; dorsal plate lobes very large, divergent, the distal third setose and as long as the ventral plate explicata Felt, C. 515 ff Abdomen bright orange, length 1 mm; dorsal plate lobes divergent, distinctly constricted subapically and bear- ing a few stout setae apically; ventral plate twice the length of the dorsal plate; reared from wheat heads. . tritici Felt cc Stems of the fifth antennal segment plainly unequal d Stems each with a length about three and four and one-half times its diameter e Abdomen reddish yellow, length 1.5 mm; reared from flowers OMATPOCYMUTM A. wees se cepsie's © apocyni Felt, C. a1684a ee Abdomen fuscous yellowish, distally deep orange, length I.5 mm; reared from apical bud galls on spiraea.......-- spiraeina Felt, C. a1759x eee Abdomen greenish bronze, length 1.5 mm; reared from flowers of spiraea...... spiraeaflorae Felt, a1681b eeee Body yellowish or yellowish orange, length I mm.........- uliginosa Felt, C. 1486 dd Stems each with a length one and one-half and two and one-half times its diameter e Abdomen dark or reddish brown, length 2 mm..........-- hudsoni Felt, C.1 ee Abdomen reddish yellow, length 1.5 mm........---+-+++:- setariae Felt, a172I ddd Stems with a length of one and one and three-fourths times their diameters respectively e Abdomen dark brown; length 2 mm............-+.+-++-> reflexa Felt, C. 1422 dddd Stems each with a length of one and one and one-half times their diameters respectively e Abdomen yellowish orange; length 1.5 mm; reared from decaying birch wood..........-- putrida Felt, a2264 bbb Ventral plate truncate or nearly so c Abdomen pale yellowish orange, length 1.6 mm; fifth antennal seg- ment having the basal part of the stem with a length twice its (Ohenaieie IA dy a Sin ORO Oe BO OTE Men Ck CoD nixoni Felt, C. 510 greater than its diameter......------ tolhurstae Felt, C. 721 bbbb Ventral plate broadly rounded, dorsal plate long, the lobes rounded c Abdomen pale orange, with a fuscous spot basally, length .5 mm; fifth antennal segment having the stems with a length two and one- fourth and three times their diameters..quere ina Felt, C. 342 12 180 NEW YORK STATE MUSEUM cc Abdomen yellowish brown, length 1 mm; fifth antennal segment having the stems with a length two and three times their diameter; reared! fromysquash insane a eee ecucurbitae Felt, C. 966 bbbb Ventral plate narrowly rounded c Wings yellowish, with a daggerlike fuscous spot on the branching of the tith vein ny Hen, sews eee pugionis Felt, a215oy aa Ventral plate short b Ventral plate broad, deeply and roundly emarginate c Abdomen pale yellowish, length 1.25 mm; dorsal plate short; tri- angularly emarginate, the lobes produced laterally, the fifth antennal segment having the stems equal, each with a length three and one-half times its diameter; reared from rolled leaves of Vier beniawn tieato liane weeigsetuodee eee verbenae Beutm. C. a1577 cc Abdomen pale yellowish, length 1.5 mm; dorsal plate short, tri- angularly emarginate, the lobes angularly rounded, the fifth antennal segment having the stems each three and one-half times its diameter; reared from dwarfed catalpa shoots............... catalpae Comst., a1804 ccc Abdomen pale yellowish, length 2 mm; dorsal plate short, angularly and slightly emarginate; fifth antennal segment having the stems with a length one-half and two and one-half times their diameters; reared. from! crumpled) leaves iol Mecoma..: cenit eee ee tecomae Felt, C. a1260 cccc Abdomen dark brown, length 2 mm; fifth antennal segment having the stems with a length one and one-half and two and one-half times their diameters.............. reginae n.sp., C. 1214 bb Ventral plate broadly and roundly emarginate c Ventral plate tapering distally d Fifth antennal segment having the basal portion of the stem with a length less than its diameter e Abdomen reddish brown, length 1 mm; fifth antennal segment having the stems with a length one-half and one and one-half that of the diameter................. antennata Felt, C. 69 ee Abdomen dark brown, length .75 mm; fifth antennal seg- ment having the stems with a length one-fourth and one and one-half that of the diameter................. flavoscuta Felt, C. 76 eee Abdomen dark reddish, length 1 mm; fifth antennal seg- ment having the stems with a length three-fourths and twice that of the diameter... 2. «see eee eee folivora Rsslivé. Hk. 1339 dd Fifth antennal segment having the basal portion of the stem — with a length greater than its diameter e Abdomen reddish brown, length 1.6 mm; fifth antennal segment having the stems with a length one and one-half and two and one-half times that of the diameters....... claytoniae Felt, C. 46 REPORT OF THE STATE ENTOMOLOGIST 1918 181 ee Abdomen dark reddish brown, length 2 mm; fifth antennal segment having the stems with a length two and one-half and three and one-half times that of their diameter..... hartmaniae n.sp., C. 1389 cc Ventral plate hardly tapering distally, very short and broad d Abdomen pale yellowish, length .75 mm; fifth antennal segment having the stems with a length two and two and one-half times that of the diameters...excavationis Felt, C. 65 bbb Ventral plate broad, triangularly emarginate c Abdomen deep red, dark brown basally, length 1 mm; fifth antennal segment having the stems with a length of three-fourths and one and one-fourth that of their diameters; female abdomen dark brown, length 2 mm; fifth antennal segment with a stem one-fourth the length of the basal enlargement, which latter has a length four times its diameter. Reared from slight swellings, frequently followed by decay, at the base of cactus spines....... opuntiae Felt, C. a1975 cc Abdomen dark brown, length 1.25 mm, fifth antennal segment with the stems each one-fourth longer than the diameter; basal clasp segment normal. Reared from flowerlike gall on Taxodium..... anthici Felt, C. a2120 ccc Abdomen reddish brown, length 1.25 mm; fifth antennal segment having the stems with a length one and three-fourths and one and one-fourth times that of their diameter; basal clasp segment greatly nswollen’d.§ stet2 Fee ee Rio. texana n.sp., C. 1265 cccc Abdomen yellowish, second segment of anterior tarsi white, length 2 mm; fifth antennal segment having the stems with a length one and one-half and two and one-half times their diameters TESPECULVE Lysate Meyers ye iia ia cletey aeesiione albotarsa Felt, C. 330 Itonida infirma Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This fuscous yellowish male was taken June 15, 1906 on syringa at Albany, N. Y. Male. Length .75 mm. Antennae almost as long as the body, thickly haired, yellowish brown; fourteen segments, the fifth with stems one and one-half and two and one-half times their diameters. Palpi; first segment irregularly subquadrate, the second twice the length of the preceding, tapering, the third a little shorter, more slender than the second, the fourth one-half longer and much more slender than the third; face fuscous yellowish. Mesonotum pale fuscous yellowish. Scutellum fuscous yellowish, slightly darker apically. Abdomen fuscous yellowish with indistinct, fuscous median spots on the third and fourth abdominal segments. Wings hyaline, costa light brown; halteres yellowish transparent. Legs a nearly uniform fuscous yellowish, paler basally, darker distally; claws long, slender, strongly curved at the basal half. Genitalia (pl. 10, fig. 5); dorsal plate broad, triangularly emarginate, the lobes short, diverging, obliquely truncate; ventral plate long, slender, broadly and tri- 182 NEW YORK STATE MUSEUM angularly emarginate, the lobes diverging, long, slender, broadly rounded; style long, slender. Type Cecid. 299. Itonida paucifila Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This yellowish brown male was taken June 15, 1906 on deutzia ate Adar, IN Y Male. Length .75 mm. Antennae a little longer than the body, thickly haired, dark brown; fourteen segments, the fifth with stems three-fourths and one and one-fourth times their diameters. Palpi; the first segment short, subquadrate, the second more than twice as long, more slender, the third one-half the length of the second, nar- rowly rounded, the fourth about twice the length of the third; face fuscous yellow. Mesonotum dark brown, yellowish laterally and posteriorly. Scutellum pale yellowish, postscutellum and abdomen yellowish brown. Wings hyaline, costa light brown; halteres yellow- ish transparent basally, slightly fuscous apically. Legs a nearly uniform pale brown; claws long, slender, evenly curved. Genitalia; dorsal plate broad, deeply and narrowly emarginate, subtruncate distally, the angles setose, ventral plate long, slender, broadly and roundly emarginate, the lobes long, diverging, broadly rounded; style long, slender, narrowly rounded. Type Cecid. 297. Itonida americana Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 413 (Cecidomyia) The pale yellow male was taken June 28, 1906 in a trap lantern at Poughkeepsie, N. Y. Male. Length 1.5 mm. Antennae nearly as long as the body, thickly haired, a very pale brown, yellowish basally; fourteen seg- ments, the fifth with stems each three and one-half times their diameter. Palpi probably quadriarticulate; face pale yellowish. Thorax and abdomen a nearly uniform pale yellowish, the terminal abdominal segments slightly more yellowish. Wings hyaline, the membrane yellowish, costa pale yellowish brown; halteres pale yellow- ish. Legs a nearly uniform pale yellowish straw color, the distal tarsal segments slightly darker; claws rather stout, short, strongly curved near the middle. Genitalia; dorsal plate broad, deeply, narrowly and triangularly emarginate, the lobes diverging, truncate, the lateral angles broadly rounded, the lateral margins narrowing anteriorly, the internal distal angles, each with a long, stout spine, the external with a group of long, coarse setae; ventral plate broad, long, deeply and roundly emarginate, the lobes narrow, diverging, narrowly rounded; style stout, long, curving, broadly rounded. Type Cecid. 420. Itonida canadensis Felt 191r Felt, E.P. Econ. Ent. Jour., 4:558 I9I5 N. Y. State Mus. Bul. 175, pl. 2, fig. 12 1918 _—————_N. Y. State Mus. Bul. 200, p..135, 150 REPORT OF THE STATE ENTOMOLOGIST I918 183 This pale yellowish species was reared August 5, 1908 from a woolly, oval leaf gall on the lateral veins of shadbush, Amelanchier canadensis, taken by Cora H. Clarke at Coolidge Point, Magnolia, Mass., the last of the preceding June. Two Curculionids were also reared from these galls,namely, Tachypterus quad- rigibbus Say and Pseudanthonomus crataegi Walsh. This gall midge is easily separable from allied forms by the long, broadly and roundly emarginate ventral plate, in con- nection with the produced stems of the fifth antennal segment and the form of the ventral plate. Gall. © Length 1 to 1.5 cm, an oval swelling on the lateral veins (fig. 35), with a yellowish discoloration and small slit on the upper surface and a broadly rounded, white, woolly, swelling beneath. Fig. 35 Itonida canadensis, June berry leaves showing galls on both upper and under side of the leaf (author’s illustration) Larva. Length 3 mm, deep orange, moderately stout. Head small. Antennae rather short, stout, breastbone bidentate, the shaft rather slender, slightly expanded posteriorly. Skin finely shagreened; posterior extremity irregularly lobed and slightly tuberculate. Itonida recurvata Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 134; separate, p. 38 (Cecidomyia) 1908 ———— _N. Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This yellowish male was taken June 21, 1906 in a trap lantern at Poughkeepsie, N. Y. Male. Length:mm. Antennae probably one-fourth longer than the body, sparsely haired, pale yellowish; fourteen segments, the fifth 184 NEW YORK STATE MUSEUM with stems each three times their diameters; terminal segment, distal node long, subcylindric, a spindle-shaped process apically. Palpi; the first segment subquadrate, the second with a length four times its diameter, the third slender, three-fourths the length of the second, the fourth a little longer and stouter than the third. Face yellowish. Thorax pale yellowish. Abdomen pale yellowish, reddish tinted basally and apically. Wings pale yellowish, costa brownish yellow. Legs pale yellowish white, the tips of the tarsi slightly dusky; claws stout, strongly curved near the middle, irregularly swollen at the distal third. Genitalia; dorsal plate broad, deeply and triangularly incised, the lobes diverging; ventral plate broad, tapering, broadly and roundly emarginate, the lobes narrow, slightly recurved; style long, stout, broadly rounded. Type Cecid. 361. Itonida fragariae Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 133; separate, p. 37 (Cecidomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This pale yellowish male was taken June 18, 1906 on strawberry at Albany, N. Y. i Male. Length .75 mm. Antennae twice as long as the body, thickly haired, light yellowish brown; fourteen segments, the fifth with stems three times their diameters; terminal segment, distal enlargement produced, cylindric, with a spindle-shaped appendage. Palpi; the first segment rectangular, the second one-half longer, narrowly rounded, the third a little longer, more slender, the fourth longer and broader than the third. Mesonotum dark carmine, sub- median lines yellowish. Scutellum tinged with carmine, post- scutellum yellowish. Abdomen pale yellowish with a median dorsal orange spot on the second and third segments. Wings hyaline, long, narrow, costa pale yellowish. Halteres yellowish transparent. Legs pale straw; distal tarsal segments light brown; claws slender, strongly curved. Genitalia; dorsal plate broad, deeply and broadly emarginate, the lobes obliquely truncate; ventral plate broad, long, broadly and roundly emarginate, the lobes diverging, slender; style long, slender, narrowly rounded. Type Cecid. 328. Itonida emarginata Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 134; separate, p. 38 (Cecidomyia) 1908 — N.Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This pale reddish male was taken May 17, 1906 at Albany, N. Y., and June 30th at Nassau, N. Y. Male. Length .75 mm. Antennae longer than the body, thickly haired, dark brown; fourteen segments, the fifth with stems two and one-half and three times their diameters; terminal segment, distal enlargement prolonged, subcylindric, apically with a short, sub- REPORT OF THE STATE ENTOMOLOGIST 1918 185 conical process. Palpi; the first segment short, suboval, the second a little longer, slender, the third suboval, broader than the second, the fourth one-fourth longer than the third, rather broad; face yellow- ish. Mesonotum pale reddish, the anterior, median and sublateral posterior areas slightly darker. Abdomen yellowish red with irregular, carmine markings. Wings hyaline, costa brown; halteres yellowish transparent basally, fuscous apically. Legs light brown, lighter ventrally, tarsi slightly darker; claws slender, strongly curved. Genitalia; terminal clasp segment swollen at the base, tapering; ventral plate swollen at base, tapering to a deeply and roundly emarginate apex, the lobes widely separated, acute; style long, slender, tapering, broadly rounded. Type Cecid. 34. Itonida ruricola Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This dark-brown male was taken June 15, 1906 on sedge, Carex, at Nassau, N. Y. Male. Length 1 mm. Antennae about twice the length of the body, thickly haired, light brown, yellowish basally; fourteen seg- ments, the fifth with stems three and four and one-half times their diameters. Palpi; first segment subquadrate, the second with a length over three times its diameter, the third as long as the second, more slender, the fourth one-half longer than the third. Face fuscous yellowish. Mesonotum dark brown, the submedian lines yellowish. Scutellum fuscous orange, postscutellum a little darker. Abdomen dark brown, the terminal segments pale orange, sparsely yellow- haired. Wings; costa light brown; halteres yellowish transparent, fuscous apically. Legs pale straw; claws rather stout, strongly curved, the pulvilli shorter. Genitalia; dorsal plate short, deeply and triangularly incised, the lobes broadly rounded; ventral plate long, deeply and broadly emarginate, the slender lobes divergent; style long, narrowly rounded. Type Cecid. 293. Itonida apicalis Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This dark-brown male was taken June 27, 1906 in a trap lantern at Newport, N. Y. Male. Length 1 mm. Antennae twice as long as the body, sparsely haired, light brown, yellowish basally; fourteen segments, the fifth with stems each three and one-half times their diameter; terminal segment, distal enlargement produced and with a long, irregular, spindle-shaped appendage. Palpi; the first segment sub- rectangular, swollen basally, the second over twice the length of the first, stout, the third a little longer and more slender than the second, the fourth longer and a little broader than the third; face yellowish. Mesonotum dark brown, submedian lines yellowish, distinct. Scu- tellum fuscous, yellowish apically, postscutellum yellowish. Abdo- 186 NEW YORK STATE MUSEUM men nearly uniform dark brown, the terminal segments light yellow; rather sparsely clothed with yellowish hairs. Wings subhyaline, costa dark brown; halteres yellowish transparent basally, slightly fuscous apically. Legs nearly uniform fuscous yellowish, tarsi lighter, terminal segments variably and slightly tinged with carmine; claws long, slender, strongly curved near the middle. Genitalia (pl. 20, fig. 5); dorsal plate broad, deeply and narrowly incised, the lobes tapering; ventral plate broad, long, deeply and roundly emargi- nate, the lobes broad, diverging, obliquely truncate; style long, stout, swollen at the basal third, constricted at the distal fourth, more so at the distal eighth, slightly expanded and narrowly rounded. Type Cecid. 409. Itonida agraria Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This pale yellowish male was captured at Newport and Nassau, N. Y., in June and July, 1906. Male. Length .75 mm. Antennae fully twice as long as the body, thickly haired, pale straw; fourteen segments, the fifth with stems each three and one-half times their diameter; terminal segment, distal enlargement prolonged, subcylindric, apically a nearly equally long, spindle-shaped process. Palpi; the first segment irregularly sub- quadrate, the second, third and fourth each nearly subequal, with a length about four times the diameter; face yellowish. Mesonotum a variable orange, slightly darker anteriorly. Scutellum and post- scutellum a variable orange. Abdomen a pale yellowish orange. Wings hyaline, costa very pale straw; halteres whitish transparent. Legs almost whitish transparent, tarsal segments annulate with light brown; claws slender, uniformly curved. Genitalia; dorsal plate broad, deeply and narrowly incised, the lobes broadly rounded exter- nally, irregularly and obliquely truncate, the internal and external angles slightly prolonged, each with a stout apical seta; ventral plate broad, long, deeply, broadly and roundly emarginate, the lobes well separated, narrow, narrowly rounded; style long, slender broadly rounded. Type Cecid. 247. Itonida terrestris Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This dark yellowish male was taken June 21, 1906 ina trap lantern at Poughkeepsie, N. Y. Male. Length .75 mm. Antennae one-fourth longer than the body, thickly haired, light brown; fourteen segments, the fifth with stems three and three and one-half times their diameters. Palpi; the first segment irregular, subcylindric, with a length one-half greater than its diameter, the second with a length about four times its diameter, the third a little shorter and more slender and the fourth a little longer and more dilated than the third. Mesonotum REPORT OF THE STATE ENTOMOLOGIST 1918 187 light yellowish brown. Abdomen dark yellowish brown, the terminal segment yellowish. Wings hyaline, costa light brown; halteres yellowish transparent. Legs a pale yellowish straw, lighter distally; claws long, slender, evenly curved, the pulvilli about two-thirds the length of the claws. Genitalia; dorsal plate short, deeply and tri- angularly emarginate, the lobes diverging, obliquely truncate, the lateral angles produced; ventral plate long, stout, deeply and roundly emarginate, the lobes slender, parallel, narrowly rounded: style long, slender, constricted near the distal sixth and seventh, narrowly rounded. Type Cecid. 371. Itonida sanguinia Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 413 (Cecidomyia) This dull-red male was taken June 24, 1906 on fern at Nassau, J igh Male. Length 1 mm. Antennae twice as long as the body, thickly haired, light brown, yellowish basally; fourteen segments, the fifth with stems each three and one-half times their diameters; terminal segment, distal enlargement with a length one-half greater than its diameter and a long, fingerlike process apically. Palpi; first segment irregularly quadrate, the second with a length three times its diameter, slender, the third a little longer, more slender, the fourth a little shorter than the third, dilated. Face yellowish. Mesonotum fuscous yellowish, the submedian lines yellowish, sparsely haired. Scutellum fuscous yellow, sparsely setose apically, postscutellum dark brown. Abdomen dull reddish basally, slightly darker apically, sparsely clothed with fine, yellowish hairs. Wings hyaline, costa dark brown; halteres yellowish basally, slightly fus- cous apically. Legs fuscous yellowish, the fore and mid tarsi darker, the hind tarsi pale yellowish; claws slender, strongly curved, the pulvilli about half the length of the claws. Genitalia; dorsal plate deeply and triangularly emarginate, the lobes broadly emarginate; ventral plate long, deeply and roundly emarginate, the lobes parallel, slender; style long, slender, narrowly rounded. Type Cecid. 385. Itonida explicata Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 413 (Cecidomyia) The pale yellowish midge was taken July 6, 1906 while collecting on golden rod or Solidago and aster at Albany, N. Y. Male. Length 1.25 mm. Antennae one-fourth longer than the body, thickly haired, light brown, yellowish basally; fourteen segments, the fifth with stems two and three times their diameters; terminal segment, distal enlargement produced and with a subfusiform append- age constricted at the base and swollen at the basal fourth. Palpi; first segment subrectangular, the second twice the length of the first, stouter, the third longer and more slender than the second, the fourth nearly twice the length of the third, slender. Face and body pale yellowish. Genitalia slightly fuscous. Wings (pl. 16 188 NEW YORK STATE MUSEUM fig. 10) hyaline, costa light brown. MHalteres pale yellowish. Legs light fuscous yellowish, tarsi lighter; claws slender, uniformly curved. Genitalia (pl. 19, fig. 1); dorsal plate deeply and triangularly incised, the lobes divergent, tapering, broadly rounded; ventral plate broad at base, deeply and roundly emarginate, the lobes well separated, narrow, obtuse; style long, stout, broadly rounded. Type Cecid. 515. Itonida aphidivora Felt 1912 Felt, E.P. N. Y. Ent. Soc. Jour., 20:245-46 1914. ————Econ. Ent. Jour., 7:458 This midge was reared in some numbers from apple leaves infested by the rosy aphis, Aphis malifoliae Fitch, at Nassau, N.Y. Itonida aprilis Felt 1912 Felt, E.P. N.Y. Ent. Soc. Jour., 20:247 These midges are among the early appearing forms taken at Ailigamaap Nba ve. Itonida tritici Felt 1912 Felt, E.P. Econ. Ent. Jour., 5:289 1918 ———— N.Y. State Mus. Bul. 200, p. 22 This is not the Cecidomyia or Diplosis tritici Kirby, a species described by several authors as having a long ovipositor and a midge associated with serious losses to grain in Europe. The type of Kirby’s species has been destroyed (Trans. Linn. Soc. 4: 232, 1798). It is doubtful if the true Cecidomyia, presumably the GComtari nia itt it 117, Korbys foceursisin whe} Unitedmistates: The specimens described under the above name are in the United States National Museum collection at Washington, were labeled Cecidomyia tritici Kirby and were presumed to be the midge which caused so much loss to American wheat growers in earlier years, since they were reared by Theodore Pergande from typical wheat midge material. The economic status of this species can not be determined at the present time, though data at hand indicate that most of the injury in American wheat fields is probably due to the work of the European Thecodiplosis> mosellana Gehin, and if this be\the case it follows that the extensive American wheat midge litera- ture relates to this species and not to the insect formerly supposed to be the cause of the injury. It is to be expected that several midges would occur in wheat heads. The writer has already characterized three and others are known to occur in Europe. The difficulty is to determine between comparatively rare and relatively innocuous species and the one or more destructive forms. REPORT OF THE STATE ENTOMOLOGIST 1918 189 Itonida apocyni Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 414 (Cecidomyia) 11s) IN. Y-otate Mus, Bul! 200, p: 180 This reddish yellow male was reared August 21, 1906 from unopened, apparently normal blossoms of the spreading dogbane, Apocynum andromaesifolium, taken at Nassau, N. Y. Male. Length 1.5mm. Antennae one-half longer than the body, thickly haired, pale yellowish; fourteen segments, the fifth with stems three and four times their diameters; terminal segment, distal node with a length three times its diameter, subcylindric, tapering, apically with a long, slender, tapering appendage. Palpi; the first segment short, subcylindric, with a length one-half greater than its diameter, the second segment with a length four times its diameter, the third a little longer and the fourth a little longer and more slender than the third. Mesonotum a light fuscous, the submedian lines sparsely haired. Scutellum yellowish; abdomen reddish yellow. Wings hyaline, costa yellowish; halteres pale yellowish. Coxae red- dish yellow, femora and tibiae yellowish, the tarsi darker; claws long, slender, evenly curved, the pulvilli rudimentary, about one-third the length of the claws. Genitalia; dorsal plate short, broad, deeply and triangularly incised, the lobes well separated, broadly and roundly emarginate, the lateral angles produced, they and the internal angles each bearing stout setae; ventral plate long, broad, deeply and roundly emarginate, the lobes tapering slightly, narrowly rounded; style long, rather stout, constricted near the distal sixth and seventh, broadly rounded. Type Cecid. a168qa. Itonida spiraeina Felt 1910 Stebbins, F. A. Springfield Mus. Nat. Hist. Bul. 2, p. 35 (Cecidomyia lappa) 1911 Felt, E.P. Econ. Ent. Jour., 4:555-56 1918 — N. Y. State Mus. Bul. 200, p. 133 Both sexes of this species were reared April 16, 1910 from a jar containing bud galls on Spiraea salicifolia collected by Cora H. Clarke the preceding season at Magnolia, Mass. A male was also reared June 27, 1910. This species is closely related to I’ apocyni Felt. The male may be distinguished by the fuscous yellowish abdomen with its distal segraents deep orange, the distinctly broader wings, the more cylindric distal enlargement of the fifth antennal segment, and the modification of the ventral plate. Gall. The gall is simply an enlarged terminal bud about 3 mm in diameter. It was brown in color when collected and approached in general form, the fringed terminal bud gall taken on spiraea in that section and was somewhat intermediate in character between this 1GC NEW YORK STATE MUSEUM atter and a small bud gall 7 mm long and 2 mm wide, composed of brownish, rudimentary bracts and inhabited by pale orange larvae. The identity of the larva has not been established. Itonida spiraeaflorae Felt 1907 Felt, E. P. New Species of Cecidomytidae II, p. 23 (Cecidomyia) 1908 ————_ N.Y. State Mus. Bul. 124, p. 304, 414 (Cecidomyia) 1918 ———— N.Y. State Mus. Bul. 200, p. 133 This greenish bronze male was reared August 27, 1907 from slightly enlarged, reddened flowers of Spiraea salicifolia taken at Albany, N. Y. Gall. The pale yellowish larvae of this species occur in the slightly enlarged, reddened flowers. Male. Length 1.5mm. Antennae one-half longer than the body, thickly haired, pale straw; fourteen segments, the fifth with stems having a length two and three times their diameters; terminal seg- ment, distal enlargement produced and bearing a long, slender appendage. Palpi presumably composed of four segments; face pale fuscous. Mesonotum brown, the submedian lines whitish. Scu- tellum yellowish. Abdomen a greenish bronze, the first segment yellowish. Wings hyaline, costa light straw; halteres pale fuscous yellowish. Coxae pale yellowish, femora yellowish at the base, fuscous apically; tibiae and tarsi fuscous; claws long, slender, strongly curved, simple, the pulvilli distinctly shorter than the claws. Geni- talia; dorsal plate short, stout, deeply and triangularly incised, the lobes narrowly separated, obliquely truncate; ventral plate long, broad, the sides nearly parallel, broadly and roundly emarginate, the lobes long, slender, subacute; style long, slender, broadly rounded. Type Cecid. a1681b. Itonida uliginosa Felt 1914 Felt, E.P. N. Y. Ent. Soc. Jour., 22:133 This species was taken August 21, 1909, by C. P. Alexander in a bog swamp at Woodworth’s lake in the Adirondacks, altitude 1570 feet. It may be distinguished from the related I. apocyni Felt by the yellowish orange body and the structure of the genitalia. Itonida hudsoni Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 135; separate, p. 39 (Cecidomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 414 (Cecidomyia) This reddish brown male was taken April 19, 1906 on red cedar, Juniperus virginiana, at Poughkeepsie, N. Y. Male. Length 2 mm. Antennae a little longer than the body, sparsely haired, dark brown; fourteen segments, the fifth with stems REPORT OF THE STATE ENTOMOLOGIST 1918 IOI one and one-half and two and one-half times their diameters; terminal segment, distal enlargement divided, a smaller proximal enlarge- ment and a larger distal portion; the tip prolonged, the basal two- thirds stout, the distal third more slender. Palpi; first segment prolonged, slightly expanded at the distal third, the second a little stouter, one-fourth longer, the third a little more slender and one- half longer than the second, and the fourth about twice the length of the third and more slender. Head dark brown. Mesonotum light brown with an indistinct yellowish, median line and a similar color on the humeri, submedian lines sparsely ornamented with long, yellowish setae; posterior margin of mesonotum slaty brown. Scu- tellum bluish slate, the apex sparsely ornamented with long, yel- lowish setae. Abdomen dark or reddish brown, rather thickly clothed with yellowish hairs. Legs brownish yellow; claws stout, strongly curved. Wings (pl. 16, fig. 12) with costa and the apical half of the third vein reddish; halteres yellowish basally, irregularly brownish and yellowish apically. Genitalia -(pl. 10, fig. 3); dorsal plate broad, deeply and triangularly emarginate, the lobes widely separated; ventral plate narrow, broadly and roundly excavated, the lobes narrow, widely separated, each with a long subapical seta. Harpes stout, apparently fused distally, swollen at the distal fourth, the margin finely and irregularly serrate; style long, stout. Type Cecid. 1. Itonida setariae Felt 1907 Felt, E. P. New Species of Cecidomyiidae II, p. 22-23 (Cecidomyia) 1908 ——— _ N.Y. State Mus. Bul. 124, p. 303-4, 414 (Cecidomyia) 1918 ———— _ N.Y. State Mus. Bul. 200, p. 24 This reddish yellow male was reared August 25, 1907 from seeds of the common fox-tail grass, Alopecurus pratensis, at Albany, N. Y. Male. Length 1.5 mm. Antennae longer than the body, thickly haired, light brown; the basal segment pale yellowish; fourteen segments, the fifth with stems one and one-half and two times their diameters; terminal segment, distal enlargement produced and with a long, slender, tapering appendage. Palpi; the first segment short, stout, irregularly subquadrate, the second stout, nearly twice the length of the first, the third a little longer, more slender, the fourth a little longer and more slender than the third; face light reddish. Mesonotum reddish, darker laterally, the submedian lines indistinct. Scutellum darker than the mesonotum, postscutellum reddish. Abdomen reddish yellow, sparsely clothed with long hairs; mem- brane and pleurae reddish yellow. Wings hyaline, costa light brown; halteres pale reddish or yellowish. Coxae pale yellowish, the anterior and mid femora and tibiae gray, the posterior femora and tibiae yellowish, the anterior and mid tarsi brownish, the posterior tarsi with the two basal segments yellowish, the. others brown; claws long, slender, irregularly curved, the pulvilli distinctly shorter than the claws. Genitalia; dorsal plate short, broad, deeply and I9Q2 NEW YORK STATE MUSEUM triangularly incised, the lobes well separated, truncate, groups of long setae at the angles; ventral plate long, broad, the sides tap- ering slightly to a broadly and roundly emarginate apex, the lobes short, narrowly rounded. MHarpes indistinct; style long, stout, tapering to an obtuse, slightly expanded apex. Type Cecid. ar7ar. Ttonida putrida Felt 1912 Felt, E. P. N. Y. Ent. Soc. Jour., 20:246-—47 LOLS (Nee State Vitiss) Rule 200s. 40 This species was reared from decaying birch wood inhabited by numerous larvae of Bolitophila cinerea Meign. collected at Albany. Itenida reflexa Felt 1913 Felt, E. P. Psyche, 20:146 —47 The male was received from C. W. Johnson of the Boston Society of Natural History. It was labeled “I. B. 16, 1906, Hampton, N.H.., ». A. Shaw, 1143.” It is easily separated from the’ related I. putrida Felt by the dark-brown abdomen and the somewhat longer antennal stems. Itonida nixoni Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 414 (Cecidomyia) This pale yellowish male was taken July 6, 1906 on New Jersey tea, Ceanothus american us, at Albany, Nive Male. Length 1.6mm. Antennae one-half longer than the body, thickly haired, light brown, yellowish basally; fourteen segments, the fifth with stems two and two and one-half times their diameters, respectively; terminal segment, distal enlargement cylindric, with a length three times its diameter, apically a slender, fingerlike process. Palpi; first segment quadrate, with a length one-half greater than its diameter, the second twice the length of the first, slender, the third a little longer than the second, slender, the fourth a little longer and more slender than the third. Face fuscous yellowish. Mesonotum dark brown, the submedian lines broad, yellow, pos- terior median area yellowish. Scutellum fuscous yellowish, post- scutellum yellowish. Abdomen: pale yellowish orange, the distal segments narrowly and faintly margined posteriorly with fuscous, the latter continued slightly on the median line; genitalia slightly fuscous. Wings hyaline, costa light brown; halteres yellowish transparent. Legs a nearly uniform fuscous straw, tarsi slightly darker; claws long, slender, evenly curved, the pulvilli nearly as long as the claws. Genitalia; dorsal plate broad, deeply and roundly emarginate, the lobes broadly rounded, the angles slightly produced; ventral plate long, broad, nearly truncate apically; style long, stout, narrowly rounded. Type Cecid. sro. REPORT OF THE STATE ENTOMOLOGIST 1918 193 Itonida tolhurstae Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 414 (Cecidomyia) This dark fuscous yellowish male was taken July 30, 1906 on sumac, Rhus, at Albany, N. Y. Male. Length 1.25 mm. Antennae a little longer than the body: thickly haired, light brown; fourteen segments, the fifth with stems having a length one and one-half and two and one-half times their diameters, the terminal segment having the distal enlargement with a length four times its diameter and a stout, tapering, fingerlike process apically. Palpi; first segment subquadrate, the second with a length three times its diameter, the third longer, more slender, the fourth as long as the third, more dilated. Mesonotum dark brown, the submedian lines yellowish. Scutellum dark reddish, postscutellum dark brown. Abdomen dark fuscous yellow, the seg- ments broadly margined posteriorly with dark brown and with short, transverse, dark lines laterally near the middle; venter mostly dark brown; pleurae fuscous yellowish. Wings hyaline, costa dark brown; halteres semitransparent. Coxae and femora basally pale yellowish, the distal portion of femora, tibiae and tarsi mostly light brown; claws stout, irregularly curved, the pulvilli about one-third the length of the claws. Genitalia; dorsal plate deeply and narrowly incised, the lobes broad, truncate; ventral plate long, broad, irregu- larly truncate; style long, slender. Type Cecid. 721. Itonida quercina Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 137; separate, p. 41 (Cecidomyia) 1908 ————— _N. Y. State Mus. Bul. 124, p. 414 (Cecidomyia) This pale orange male was taken June 21, 1906 on Swamp white oak, Quercus bicolor, at Albany, N. Y. Male. Length .5; mm. Antennae nearly as long as the body, thickly haired, yellowish gray; fourteen segments, the fifth with stems having a length two and a quarter and three times their diameters. Palpi; first segment short, semiglobose, second rather long, curved, and the third a little longer, more slender; face pale yellowish. Mesonotum dark brown, submedian lines yellowish, sparsely ornamented with fine setae. Scutellum pale yellowish, postscutellum yellowish brown. Abdomen pale orange with a large fuscous median spot basally. Genitalia slightly fuscous. Wings hyaline, costa light brown; halteres pale yellowish basally and dis- tally, pale orange in the middle. Legs pale straw color, the annu- lations variably marked with carmine, distal tarsal segments fuscous; claws stout, simple. Genitalia; dorsal plate broad, deeply incised, the lobes approximate, broadly rounded; ventral plate broad, expanding slightly to a broadly rounded setose apex; style long, stout, curved. Type Cecid. 342. a 194 NEW YORK STATE MUSEUM Itonida cucurbitae Felt 1911 Felt, E. P. Econ. Ent. Jour., 4:555 The midge was reared July 10, 1876 from orange larvae on a squash, presumably by the late C. V. Riley. The vegetable had a curious, rough, fulvous appearance. The specimens were kindly placed at our disposal through the courtesy of Dr L. O. Howard. M yco- diplosis cucurbitae was also associated with this form, the two resembling each other so closely as to be inseparable with a hand lens. Itonida pugionis Felt 1911 Felt, E. P. Econ. Ent. Jour., 4:557-58 1918 —————__N. Y. State Mus. Bul. 200, p. 53 This striking form was first reared May 4, 1911 from a jar contain- ing chestnut bark infested with numerous Miastor ameri- cana Felt larvae collected at Nassau. Subsequently it was obtained from maple bark containing many Miastor larvae. It is very probable that this form is predaceous. It is tentatively referred to this genus, though it appears to present no very close resemblance to known species. It is easily recognized by the striking coloration of the antennae and wings, especially the latter. Itonida catalpae Comst. 1881 Comstock, J. H. U.S. Comm. Agric. Rep’t, 1880, p. 266 —67 (Diplosis) 1890 Packard, A. S. U.S. Ent. Comm. 5th Rep’t, p. 666 —-68 (Diplosis) 1906 Felt, E.P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:735 (Cecidomyia) 1908 Gossard, H. A. Econ. Ent. Jour., 1:181-82 (Cecidomyia) 1908 Houser, J. S. Ohio Agric. Expt. Sta. Bul. 194, p. 193 (Cecidomyia) 1908 Gossard, H. A. Ohio Agric. Expt. Sta. Bul. 197, p. 1-13 (Cecidomyia) 1909 Felt, E.P. Ent. Soc. Ont., 39th Rep’t, p. 43 (Cecidomyia) 1910 Douglas, B. W. State Ent. Ind. 2d Rep’t, p. 93-95 (Cecidomyia) 1918 Felt, E.P. N.Y. State Mus. Bul. 200, p. 186 The orange-colored larvae of this species occur, according to Professor Comstock, in the seed pods of Catalpa bigno- noides, causing the seeds to rot and the pods to turn brown in midsummer. The attack may be observed in the early part of August and is indicated by the unripe and normally green pods turning brown. One-half of the pod may remain green while the remainder appears to be dry and apparently ripe. These abnormal pods have the mass of seeds fairly alive with active footless, yellow maggots, none over 3.25 mm long. They vary much in size, some being nearly full grown while others are quite young. The entire contents of the infested pods are in every case in a badly decayed condition. REPORT OF THE STATE ENTOMOLOGIST 1918 195 Adults were reared in some 1o days. The larvae undergo their transformations in the soil, many of them apparently emerging through one hole. The insects seem to breed throughout the fall. This species is best known on account of its injuring the pods and young twigs, though it appears capable of materially damaging the foliage. The following unpublished notes kindly placed at our disposal by Doctor Howard of the bureau of entomology, probably refer to this species. In June 1897 Mr Pergande found on the under side of catalpa leaves a number of pale greenish, whitish or yellowish Itonid larvae producing a slight abrasion on the surface. Most of the affected leaves showed peculiar, circular, brownish spots sur- rounded by yellowish green rings. These observations were repeated the following season and convinced Mr Pergande that the spots were caused by the larvae. He states that the very minute eggs are loosely laid upon the foliage and drop easily. They are elongate- oval, pale yellowish and highly polished. The final transformations, he states, must occur in the soil. Male. Length 1.3 mm. Antennae about twice as long as the body, thickly haired, fuscous, basally fuscous yellowish; fourteen segments, the fifth with stems having a length two and one-half and three and one-half times their diameters; terminal segment, distal enlargement cylindric, with a length five times its diameter, apically a long, slender, fingerlike appendage. Palpi; the first seg- ment short, stout, irregular, subquadrate, the second about as long, more slender, the third one-half longer than the second, slender, the fourth a little shorter than the third. Mesonotum fuscous yellowish, the submedian lines yellowish; scutellum and postscu- tellum yellowish; abdomen light yellow; wings hyaline, costa pale yellowish; halteres yellowish. Legs a light fuscous yellowish; claws long, slender, evenly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment short, stout, roundly truncate dis- tally; terminal clasp segment rather short, stout, tapering. Other structures indistinct in preparation. Described from specimens received from Washington. Taken August 16, 1880 and probably types. Cecid. ar8o4. Itonida tecomae Felt 1906 Felt, E.P. N. Y. State Mus. Bul. 104, p. 127-30 (Bremia) 1908 ————— N. Y. State Mus. Bul. 124, p. 414 (Cecidomyia) 1918 ————— N.Y. State Mus. Bul. 200, p. 185 The pale yellowish male was reared from yellowish larvae found upon the distorted, partially rolled leaves of trumpet vine, T ecoma radicans, at Albany, N. Y., in August 1905. The wing 1s shown in plate 16, figure 5. 13 196 NEW YORK STATE MUSEUM Gall. The pale yellowish larvae live freely upon the distorted, partially rolled leaves, producing pseudogall-like formations. Itonida myricae Beutm. 1907 Beutenmueller, William Can. Ent., 39:306 1918 Felt, E. P. Am. Mus. Nat. Hist. Bul., 38:181-82 1918 ——-—— N. Y. State Mus. Bul. 200, p. 40 This yellowish midge was reared from a bud gall on wax myrtle, Mynica cernifer. [tis related,to,1.,tecom ac, Felt, from which it is readily separated by a number of characters. Itonida verbenae Beutm. 1907 Beutenmueller, William Can. Ent., 39:306-7 1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 414 (Cecidomyia urtifolia) 1918 ——— N.Y. State Mus. Bul. 200, p. 182 This pale yellowish form was reared July 20, 1907 from the ter- minal rolled leaves of Verbena urticaefolia taken at Karner, N. Y. é Male. Length 1.25 mm. Antennae one-half longer than the body, thickly haired, light fuscous, the stems colorless, basally a nearly uniform pale yellowish; fourteen segments, the fifth with stems each three and one-half times their diameter. Palpi; the first ‘segment rather long, irregularly subquadrate, the second slender, with a length fully three and one-half times its diameter, the third a little shorter and more slender and the fourth one-third longer and more dilated than the third. Thorax and abdomen a nearly uniform pale yellowish. Wings hyaline, costa light straw; halteres yellowish transparent. Legs light straw, the distal tarsal segments somewhat darker; claws long, stout, strongly curved basally, the pulvilli about half the length of the claws. Genitalia; dorsal plate short, broad, deeply and broadly emarginate, the lobes obliquely truncate, produced laterally; ventral plate long, slender, broadly and roundly emarginate, the lobes long, tapering, narrowly rounded; style long, slender, narrowly rounded. Cecid. ars77. Itonida reginae n. sp. This dark brown male was taken May 28, 1907 at Regina, N. W. T. by T. N. Willing. Male. Length 2 mm. Antennae one-fourth longer than the body, rather thickly haired, brown; fourteen segments, the fifth with stems one and one-half and two and one-half times their diameters; terminal segment, distal enlargement prolonged, tapering, obtuse. Palpi; the first segment stout, with a.length about one-half greater than the diameter, the second about twice as long as the first and more slender, the third a little longer and more slender than the second and the fourth a little longer than the third. Mesonotum REPORT OF THE STATE ENTOMOLOGIST 1918 197 dark brown, the submedian lines rather sparsely haired. Scutellum dark brown with a few apical setae, postscutellum and abdomen dark brown. Wings hyaline, costa pale reddish brown. Legs a nearly uniform dark fuscous straw; claws long, slender, strongly curved, the pulvilli as long as the claws. Genitalia; dorsal plate short, broad, deeply and triangularly emarginate, the lobes widely separated, broadly rounded, subacute; ventral plate short, stout, the basal half contracted, broadly and roundly emarginate, the lobes widely separated, slender, obtuse; style stout, tapering. Type Cecid. 1214. j Itonida antennata Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 414 (Cecidomyia) This reddish brown male was taken May 21, r906 at Albany, N. Y. Male. Length 1.25mm. Antennae one-half longer than the body, thickly haired, yellowish brown; fourteen segments, the fifth with stems one-half and one and one-half times their diameters; terminal segment, distal enlargement produced, the appendage subconical, obtuse. Palpi; first segment short, stout, swollen distally, the second narrowly oval, the third as long as the second, more slender, the fourth one-half longer than the second, slightly dilated. Face yellowish brown. Mesonotum dark brown, the yellowish submedian lines with pale setae, posterior median area yellowish. Scutellum yellowish apically, postscutellum yellowish. Abdomen reddish brown, darker basally. Wings hyaline, costa light brown. Halteres yellowish transparent. Coxae straw yellow, tinged with red. Legs mostly dark brown, lighter ventrally; claws stout, strongly curved. Genitalia; dorsal plate broad, deeply and roundly emarginate, the lobes widely separated, irregularly rounded; ventral plate broad, long, deeply and broadly emarginate, the lobes short, widely sep- arated, broadly rounded; style broad at base, broadly rounded. Type Cecid. 69. : Itonida flavoscuta Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 137; separate, p. 41 (Cecidomyia) . 1908 ————— _N. Y. State Mus. Bul. 124, p. 415 (Cecidomyia) This dark-brown male was taken May 21, 1906 at Albany, N. Y. Male. Length .7z mm. Antennae longer than the body, thickly haired, dark brown; fourteen segments (fig. 36), the fifth with stems one-fourth and one and one-half times their diameters ; terminal segment, distal enlargement produced, subconical. Palpi; first seg- ment subquadrate, the second stout, the third one-fourth longer than the second and the fourth one-third longer than the third. Face reddish brown. Mesonotum dark brown, the submedian lines with pale setae. Scutellum yellowish, setose apically; postscutellum yellowish. Abdomen dark brown. Wings hyaline, costa light brown. Halteres yellowish transparent. Legs yellowish trans- parent, tinged with reddish at the extremities of femora, tibiae and 198 NEW YORK STATE MUSEUM tarsi; claws stout, uniformly curved. Genitalia (pl. 20, fig. 6); dorsal plate narrowly and roundly emarginate, the lobes divergent a “y \ ip Tip ah aX 804 Pe sft ie Fig. 36 Itonida flavos- cuta, third and fourth an- tennal segments of male (enlarged, original) and narrowly subtruncate; ventral plate broad, broadly and deeply emarginate, the lobes well separated; style stout, tapering, narrowly rounded. Type Cecid. 76. Itonida foliora Rssl. & Hkr. 1908 Russell, H. M. & Hooker, C. W. Ent. News, 19:349 -52 (Cecidomyia) 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 415 (Cecidomyia) 1910 Stebbins, F. A. Springfield Mus. Nat. Hist. Bul., 2:21, 22, 24 (Cecidomyia) REPORT OF THE STATE ENTOMOLOGIST 1918 199 This insect is possibly Cecidomyia erubescens O.S° though as no stage of the insect was described, it is impossible to be certain without exhaustive rearings from a variety of marginal oak leaf rolls. The species was discovered by W. V. Tower in July 1905, working on the leaves of black oak. His observations on its life history were continued by H. M. Russell and subsequently C. W. Hooker completed the account. The marginal rolls (pl. 13, fig. 1) produced by this insect were very abundant on a black oak (Quercus coccinae, var. tinctoria) growing near the president’s house on the grounds of the Massachusetts Agricultural College at Amherst, Mass. The infested tree was in a small clump of red oaks, none of which became infested, apparently indicating that this species occurs only on the black oak, particularly as the larvae were numerous upon the leaves and adults occurred in swarms under its branches. Every leaf was infested by from one to over one hundred larvae up to certainly within to feet of the top, though they were not so numerous on the upper branches as on the lower limbs. Our own observations show that certain Cecidomyiidae at least, display a marked preference for the foliage of the lower limbs. Male. Length 1mm. Antennae one-fourth longer than the body; thickly haired, dark brown; fourteen segments, the fifth with stems three-fourths and two times their diameters, respectively; terminal segment, distal enlargement slightly produced, apically an irregular conical projection. Palpi; the first segment rather long, stout, expanded distally, the second a little longer, more slender, the third one-half longer than the second, more slender, the fourth three- fourths longer than the third, somewhat dilated. Mesonotum dull black. Scutellum deep red, postscutellum yellowish. Abdomen deep red, the basal segments fuscous. Wings hyaline, costa reddish brown; halteres pale yellowish. Coxae, femora and tibiae mostly fuscous yellowish, the tarsi a little darker; claws long, slender, slightly curved, the pulvilli a little shorter than the claws. Genitalia; dorsal plate short, broad, deeply and triangularly incised, the lobes diverging, narrowly and irregularly rounded; ventral plate long, broad, the sides somewhat emarginate, broadly and roundly emar- ginate, the lobes short, obtuse; style stout, long and tapering, nar- rowly rounded. Female. Length 1.; mm. Antennae one-half the length of the body, sparsely haired, reddish brown; fourteen subsessile segments, the fifth with a length two and one-half times its diameter; terminal segment slightly produced, with a length four times its diameter and a short, stout process apically. Tarsi; first segment subquadrate, the second with a length twice its diameter, expanded distally, the third a little longer, narrowly oval, the fourth one-half longer than the third, slightly dilated. Ovipositor one-third the length of the abdomen, the terminal lobes with a length twice the width, narrowly oval. Otherwise nearly as in the male. Cecid. 1339. 200 NEW YORK STATE MUSEUM Life history. Messrs Russell and Hooker state that the midges emerge from the ground from May rst to the 2oth, all disappearing by June 1st. May 4, 1908 five adults were captured and by the tith the insects occurred in thousands, being so numerous that it was only necessary to sweep an open cyanid jar over the top of, and through the grass to obtain all the specimens desired. The flies appear just as the leaves begin to unfold and, for a time, after emerging, large numbers may be found in the early morning and on wet days, especially under the tree. As it becomes warmer and the dew dries they rise among the branches. The flight is feeble and the insects do not fly out beyond the borders of the tree. Oviposition begins when the leaves are 1 to 2 inches long, the eggs being deposited for the most part upon the under side and irregularly scattered between the veins. A few are laid, apparently by accident, upon the upper surface. An average of 70 eggs was obtained from each of 50 leaves, not over 6 being upon the upper surface, the total number varying from 40 to 120. One leaf 12 inches wide bore 28: eggs on its lower surface and 175 on the upper. The eggs hatch in from 4 to 6 days, the time varying with the weather. The young larvae migrate at once to the edge of the leaf or to any hole in it and begin to feed on the upper surface. After about 4 days of this feeding the edge begins to curl over on the upper surface, forming a roll, the upper face of which becomes more or less reddish. The larvae feed within this roll, extending it with the growth of the leaf. Occasionally a young larva feeds for a time in a circle on the exposed surface of the leaf, causing it to become reddish and wrinkled. May 22d nearly all the leaves near the ground bore rolls which, in some cases, nearly encircled the leaf, while in others they were about one-fourth of an inch long. One roll an inch long contained 25 larvae, while only a few were present in others. The longer rolls are said to con- tain relatively fewer larvae. The larval stage persists through the summer, full growth being attained by the last of September or the first of October, at which time all except those parasitized enter the ground and pupate prior to cold weather. Exceptionally full- grown larvae may be unable to escape and winter in the roll, the adults appearing at the usual time in the spring. Natural enemies. This species is attacked by a chalcid egg para- site which appears at the same time in swarms almost as large as those of the host. The female chalcid walks around among the midge eggs, touching them rapidly with her antennae and stopping every now and then to insert her ovipositor and lay an egg in that of the host, neglecting others in the immediate vicinity. A mite REPORT OF THE STATE ENTOMOLOGIST 1918 201 was also found abundant under and on the tree and it may prove to be a natural enemy of this species. Itonida claytoniae Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 133; separate, p. 36 -37 (Cecidomyia) 1908 ————— N.Y. State Mus. Bul. 124, p. 415 (Cecidomyia) This reddish brown male was taken May 18, 1906 on Clay- tonia virginica at Albany, N. Y. Male. Length 1.5 mm. Antennae longer than the body, thickly haired, light brown; fourteen segments, the fifth with stems one and one-half and two times their diameters; terminal segment, distal enlargement strongly constricted at the basal third and with a subglobular appendage. Palpi; the first and second segments suboval, nearly equal, the third one-half longer than the second, and the fourth one-half longer than the third. Face reddish. Meso- notum dark brown, the submedian lines paler. Scutellum reddish, postscutellum and probably abdomen reddish brown, the latter sparsely yellow haired. Wings hyaline, costa dark brown. Halteres reddish transparent. Legs dark brown, lighter ventrally; tarsi pale yellow; claws slender, strongly curved at the apical third. Geni- talia; dorsal plate narrow, short, deeply and triangularly incised, the lobes well separated, narrowly rounded; ventral plate as broad as the dorsal plate, deeply and roundly emarginate, the lobes well separated, narrowly rounded; style stout, the edges irregularly convolute, broadly rounded. Type Cecid. 46. Itonida hartmaniae n. sp. The male described below was taken near a decaying hickory stump at Albany, N. Y., April 15, rort. Male. Length 2mm. Antennae one-fourth longer than the body, thickly haired, dark brown; fourteen segments, the fifth with stems two and one-half and three and one-half times their diameters; terminal segment, distal enlargement with a length nearly four times its diameter, a constriction near the basal third and apically a long, stout, tapering process. Palpi; first segment subrectangular, with a length three times its diameter, the second about as long as the first, a little stouter, the third one-half longer than the second, more slender, the fourth one-half longer than the third, dilated. Meso- notum slaty brown, the submedian lines sparsely haired. Scutellum fuscous yellowish, postscutellum dark brown. Abdomen sparsely haired, dark reddish brown; genitalia dark brown. Wings hyaline, costa light brown: halteres yellowish basally, fuscous reddish and thickly setose apically. Coxae dark brown; femora mostly reddish brown: tibiae darker, the posterior with a broad subapical band of yellowish scales; tarsi mostly dark brown, the two distal segments on the anterior legs yellowish brown; claws stout, evenly curved, simple, the pulvilli about one-third the length of the claws. Geni- 202 NEW YORK STATE MUSEUM talia; dorsal plate short, deeply and triangularly incised, the lobes diverging, obliquely truncate; ventral plate long, broad, tapering, broadly and roundly emarginate, the lobes short, broadly rounded; style long, stout, narrowly rounded. Type Cecid. 1389. Itonida excavationis Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 139 (C. excavata); separate, Pp. 42-43 (Cecidomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 415 (Cecidomyia) The pale yellowish male was taken May 21, 1906 on soft maple, Acer tuba am) at Albany. NYY. Male. Length .75 mm. Antennae longer than the body, rather thickly clothed with short, dark brown setae, pale straw color; fourteen segments, the fifth with stems two and two and one-half times their diameters respectively. Palpi; the first segment short, subquadrate, slightly swollen at the distal third, the second twice the length of the first, slender, the third a little longer, more slender, the fourth one-half longer than the third; face yellowish white. Mesonotum reddish brown with distinct submedian yellowish lines sparsely clothed with setae. Scutellum yellow, tipped with carmine, postscutellum yellow. Abdomen pale reddish yellow with slightly fuscous areas dorsally on the second and third segments. Wings hyaline, costa pale brown; halteres yellowish transparent. Legs variably brown tinged with reddish, lighter ventrally, the anterior and mid tarsi distinctly darker than the posterior; claws slender, slightly curved. Genitalia (pl. ro, fig. 4); dorsal plate broad, deeply and roundly emarginate, the lobes widely separated, narrowly rounded; ventral plate narrow, narrowly rounded; style long, tap- ering, the margins slightly convolute, broadly rounded. Type Cecid. 65: Itonida opuntiae Felt 1910 Felt, E. P. Ent. News, 21:10-12 (Cecidomyia) 19m5 (=> «6ON.Y sState:Mus. Bulya7s, p.30i-41 IOlS iia NeW: State(Mus. Buls200,psi72.073 Midges were reared during June, July and August 1909, from discolored areas accompanied by more or less decay (fig. 37), at the base of spines on Opuntia leaves received from George V. Nash, head gardener of the New York Botanical Gardens at Bronx Park, N. Y. Apparently the eggs are deposited at the base of a spine, possibly near some recent wound and the larvae commence opera- tions upon the tissues, their work being followed by decay and in Some instances by the operations of a small Ptinid beetle belonging to the genus Catorama. In the latter case the dead tissues are traversed by irregular galleries, the Cecidomyiid larvae being in the near vicinity of living cells. This species occurred in New York in the leaves of Opuntia banburyana from Italy and an REPORT OF THE STATE ENTOMOLOGIST 1918 203 Opuntia from British West Indies. It is probably American and presumable that the infestation originated in this country. The deep red male may be recognized by the short, broad. triangularly emarginate ventral plate. Fig.37 Itonida opuntiae, Fig. 38 Itonida anthici, lobe of cactus showing charac- cluster of flowerlike galls teristic signs of infestation and one gall enlarged (au- (author’s illustration) thor’s illustration) Itonida anthici Felt 1913 Felt, E. P. Econ. Ent. Jour., 6:278 I918 ————— N. Y. State Mus. Bul. 200, p. 5, 19, 20 This interesting species produces pinkish white flowerlike galls on cypress, Taxodium distichum, the galls (fig. 38) sometimes being so numerous as to dominate the dark-green cypress foliage and give the appearance of an ordinary flowering plant thickly set with small blossoms. The gall was collected repeatedly by Dr 204. NEW YORK STATE MUSEUM W. L. McAtee of the bureau of biological survey, Washington, and is apparently common and widely distributed, since we have records of its occurring in Arkansas, Mississippi and Alabama. The gall is probably a greatly hypertrophid leaflet. Dr E. A. Burt of the Missouri Botanical Garden has recently called our attention to the fact that this gall was originally supposed to have been produced by a fungus, first designated as Merulius cupressi Schw. (Schrift d. Naturforsch. Gesell. Leipzig, 1:92, 1822) and subsequently referred to the genus Cyphella (Fries, Epicr. 567, 1836-1838). He states that it has been distributed in collections of fungi under one or the other of the above-mentioned botanical names. The above is paralleled by the earlier reference of the peculiar blister leaf galls produced by the genus Asteromyia to fungi belonging to the genus Rhytisma. The true nature of this cypress gall seems to have first been pointed out, according to Dr Burt (Mo. Bot. Gard. Ann. 1:380, 1914) by Berkley & Curtis (Acad. Nat. Sci. Phila: Jour. 3:207, 1856). See also Saccardo, Sylloge Fungorum 6:674, 1888. Itonida manihot Felt 1910 Felt, E. P. Ent. News, 21:268-69 (Cecidomyia) 1918 ———— N.Y. State Mus. Bul. 200, p. 157 This yellowish brown West Indian species, only about 1 mm long, was reared from leaf galls on Cassava, Manihot utilissima, by William H. Patterson, of the agricultural school, St Vincent, W. I. It was also received under date of March 16, 1915 from Prof. F. W. Urich, Trinidad, B. W. I. The male is most easily recognized by the long, deeply and roundly emarginate ventral plate and the short stems separating the antennal enlargements. Itonida texana n. sp. ' The reddish male described below was taken by E. S. Tucker in a trap lantern at Plano, Texas, during July. It is doubtfully referred to this genus and is remarkable because of the greatly swollen basal clasp segment. Male. Length 1.25 mm. Antennae a little longer than the body, thickly haired, dark brown; fourteen segments, the fifth with stems one and three-fourths and one and one-fourth times their diameters, respectively; terminal segment produced, the distal enlargement subcylindric, with a length three times its diameter, and apically with a slender, fingerlike process. Palpi; first segment with a length over twice its diameter, the second a little longer, stouter, the third a little longer and more slender than the second, and the fourth a little longer than the third. Mesonotum reddish brown, the sub- REPORT OF THE STATE ENTOMOLOGIST 1918 205 median lines indistinct.) Scutellum and postscutellum reddish brown.!; Abdomen rather thickly clothed with yellowish hairs, a variable reddish brown. Wings hyaline, costa light straw: halteres yellowish transparent, slightly fuscous apically. Coxae, femora and tibiae a variable dark*%brown and yellowish, the segments slightly fuscous apically; claws slender, strongly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment greatly swollen, ovate, with a length only one-fourth greater than the diameter: terminal clasp segment as long, stout, curved; dorsal plate short, broadly emarginate, the lobes broadly rounded; ventral plate deeply and triangularly emarginate, the lobes divergent, tapering; style short, tapering, narrowly rounded. Type Cecid. 126s. Itonida albotarsa Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 132-33; separate, p. 36 (Cecidomyia) The yellowish male was taken on hickory, Carya, at Albany, N. Y., June 19, 1906. Male. Length 2 mm. Antennae longer than the body, sparsely haired, light brown; fourteen segments, the fifth with stems one and one-half and two times their diameters, respectively; terminal segment produced, the distal enlargement constricted at the basal third, with a length over twice its diameter and apically with a short, conical appendage. Palpi; first segment subquadrate, the second with a length three times its diameter, the third a little longer, more slender, the fourth one-third longer than the third. Mesonotum yellowish, sparsely clothed with black hairs. Abdomen yellowish, lighter distally, the segments margined posteriorly with long, black hairs. Wing (pl. 1s, fig. 8) with costa dark brown; halteres yellowish, slightly fuscous apically. Legs thickly clothed with fuscous hairs, yellowish basally; tibiae black, the tarsi fuscous, except the white second of the anterior and the second to fifth of the posterior. Genitalia (pl. ro, fig. 2); dorsal plate short, deeply and triangularly emarginate, the lobes broadly rounded; ventral plate long, deeply and triangularly emarginate, the lobes triangular; style short, narrowly rounded. Type Cecid. 330. Itonida taxodii Felt 1911 Felt, E. P. Econ. Ent. Jour., 4:556-57 1918 ————— N.Y. State Mus. Bul. 200, p. 19 This insect, characterized earlier, was reared in February and March 1883, by the late Theodore Pergande from a conical, globular or elongated deformation of the leaves of bald cypress, Tax'o- dium distichum, collected by H. G. Hubbard in Florida. Specimens were kindly placed at our disposal for study through the courtesy of the United States National Museum. 206 NEW YORK STATE MUSEUM Larva. Length about 2.5 mm, moderately stout, tapering at both extremities, apparently deep reddish; breastbone indistinct in the preparation. Itonida ramuli Felt 1907 Felt, E.P. N. Y. State Mus. Bul. 110, p. 164 (Cecidomyia) This reddish orange species was reared May 25, 1907 from a small, monothalamous, almost imperceptible enlargement on the smaller twigs of Cornus paniculata taken at Albany, N. Y. The female has fourteen antennal segments, the fifth with a stem about one-third the length of the basal enlargement, which latter has a length about three times its diameter. The ovipositor is short and the terminal lobes long, slender, narrowly rounded and _ thickly setose. Gall. A small, monothalamous, almost imperceptible enlargement on the smaller twigs. Length 5 mm, diameter 2.5 mm. The branch has a diameter of only 1.5 mm. The larva occurs in a rather large, oval chamber. Larva. Length 2 mm, whitish yellow, moderately stout. Head small, triangular; antennae short, stout, uniarticulate. Body with the segmentation moderately distinct; skin nearly smooth; breast- bone roundly bilobed, the shaft obsolescent; posterior extremity broadly rounded, with conical, chitinous, sublateral pseudopods and just anteriorly a submedian pair of spined tubercles; sublaterally a pair of rather long, stout spines. Female. Length 2.5 mm. Antennae extending to the fifth abdominal segment, sparsely haired, pale yellowish; fourteen seg- ments, the fifth with a stem one-third the length of the cylindric basal enlargement, which latter has a length three times its diameter; terminal segment somewhat reduced, subconical. Palpi; first seg- ment stout, subquadrate, the second more than twice the length of the first, rather slender, the third about as long, a little stouter, the fourth one-half longer than the third. Face light fuscous yel- lowish. Mesonotum yellowish brown, the submedian lines lighter, thickly setose, the posterior median area light reddish yellow. Scu- tellum light reddish, sparsely setose apically; postscutellum reddish brown. Abdomen deep reddish orange, the segments posteriorly sparsely setose. Costa dark brown, subcosta uniting with the margin at the basal third, the third vein just beyond the apex. Halteres yellowish transparent, light fuscous subapically. Coxae and base of femora yellowish transparent, femora distally, tibiae and tarsi dark brown, the second and third tarsal segments on the | posterior legs fuscous yellowish; claws long, slender, slightly curved, the pulvilli one-third the length of the claws. Ovipositor short, terminal lobes long, slender, narrowly rounded. Type Cecid. a1384. REPORT OF THE STATE ENTOMOLOGIST 1918 207 Itonida cincta Felt 1g1r Felt, E. P. Econ. Ent. Jour., 4:558 1918 ————— N. Y. State Mus. Bul. 200, p. 54 This name is applied to a series of well-marked females reared by the late C. V. Riley from larvae taken under oak bark. Though the markings simulate closely those of Lestodiplosis, the long ovipositor and the relatively broad lobes prevent its reference thereto and we have therefore tentatively placed it in the above-named genus. It is such a well-marked form that there should be no difficulty in recognizing it subsequently. Specimens, evidently from the same lot, occur in the Museum of Comparative Zoology at Cambridge, Mass. Itonida piperitae Felt 1907 Felt, E. P. New Species Cecidomyiidae II, p. 22 (Cecidomyia) 1908 ————_N. Y. State Mus. Bul. 124, p. 303 (Cecidomyia) This yellowish female was reared September 4, 1907 from small, enlarged terminal buds on peppermint, Mentha piperita, taken at Nassau, N. Y. Gall. Green, hoary, pyriform, slightly enlarged buds, diameter 3 mm. Female. Length 1.25mm. Antennae as long as the body, sparsely haired, brown, yellowish basally; fourteen segments, the fifth with a stem three-fourths the length of the basal enlargement, which latter has a length about twice its diameter; terminal segment produced, the distal enlargement with a length three times its diam- eter, apically a long, slender appendage. Palpi; first segment short, stout, subquadrate, the second one-half longer, more slender, the third a little longer and more slender than the second, the fourth one-third longer and more slender than the third. Face yellowish. Mesonotum shaded orange red, the submedian lines indistinct. Scutellum reddish basally, light fuscous apically; postscutellum deep orange. Abdomen pale orange. Costa light reddish brown, sub- costa uniting therewith near the basal third, the third vein just beyond the apex. Halteres pale yellowish, slightly fuscous . sub- apically. Legs light yellowish orange, the articulations variably tinged with carmine; claws long, slender, strongly curved, simple, the pulvilli nearly as long as the claws. Ovipositor short, the ter- minal lobes narrowly oval, with a length three times the width. Type Cecid. a1663c. Itonida abdominalis nov nom. 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 124-25; separate, p. 28 (Oligotrophus caryae) The reddish brown female was taken on hickory, Carya, at Albany, N. Y., June 1, 1906. 208 NEW YORK STATE MUSEUM Female. Length .75 mm. Antennae extending to the middle of the abdomen, sparsely haired, light brown; fourteen segments, the fifth with a stem one-fifth the length of the cylindric basal enlarge- ment, which latter has a length about three times its diameter; terminal segment slightly reduced and apically with a rather short, stout appendage. Palpi; first segment with a length twice its diam- eter, the second one-half longer, the third as long as the second, the fourth a little longer than the third. Face yellowish. Mesono- tum black. Scutellum and postscutellum reddish brown. Abdomen reddish brown, the distal segment and ovipositor light yellowish, the other segments margined posteriorly with dark brown. Costa reddish brown, subcosta uniting therewith at the basal fourth, the third vein joining the margin well beyond the apex. MHalteres yel- lowish or reddish transparent. Coxae and basal portion of femora yellowish, distal portion of femora, tibiae and tarsi a variable straw brown; claws slender, slightly curved, smple. Ovipositor short, the lobes lanceolate, slender, coarsely setose. Type Cecid. 102. DYODIPLOSIS Rubs. 1910 Rubsaamen, E. H. Zeitschr. Wissenschaft. Insektenbiol., 6:287 1911 Felt, E.P. N. Y. Ent. Sec. Jour., 19:62 1912 Rubsaamen, E. H. Zeitschr. Wissenschaft. Insektenbiol., 8:49 1913 Kieffer, J. J. Gen. Insect., fasc. 152 p. 205 This genus, previously unrecognized in America, presents a general resemblance to a typical Hormomyia. It may be distinguished by the mesonotum not being produced over the head, the tri- or quadri- articulate palpi, the moderately long circumfila, the female being noteworthy because of the erect loops and the two connecting filt, the simple claws and rudimentary pulvilli, the short ovipositor, the heavy genitalia with a broadly lobed dorsal plate and the broad, truncate, ventral plate. Type Hormomyia aranariae Rubs. Dyodiplosis davisi n. sp. The male was taken in a trap lantern at Huguenot Park, Staten Island, June 22, 1906. It appears to be most closely allied to this genus though it differs somewhat from the typical form. Two Indian species are known and as the generic type is European, this would indicate a wide distribution for the genus or at least closely allied forms. Male. Length 3.5mm. Antennae probably longer than the body, pale straw. yellow, and presumably with fourteen segments. The fifth with stems with a length one-half greater and a little greater than their diameters, respectively; distal enlargement subcylindric, with a length about twice its diameter; circumfila with short, mod- erately thick loops. Palpi; first segment with a length over twice REPORT OF THE STATE ENTOMOLOGIST 1918 209 its diameter, the second as long as the first, the third one-half longer than the second and the fourth one-half longer and more slender than the third. Face fuscous yellowish, mesonotum brown. with broad, fuscous yellowish, sparsely haired, submedian lines. Scu- tellum reddish brown, postscutellum light yellowish, abdomen dark reddish brown, thickly clothed with fine yellowish setae, the basal segment light yellowish. Wings hyaline (pl. r4, fig. 1). Halteres yellowish transparent, fuscous subapically, legs fuscous straw, claws long, slender, slightly curved. Pulvilli rudimentary. Genitalia (pl. 18, fig. 2); both clasp segments long, stout; dorsal plate broad, very broadly and triangularly emarginate; ventral plate longer, broad and broadly rounded; style a little longer, narrowly rounded apically. Type Cecid. 383. HORMOMYIA Loew Angelinia Rond. 1850 Loew, H. Dipt. Beitr., 4:20, 31 1853 Winnertz, J. Linn. Ent., 8:188, 283 1861 Rondani, C. Soc. Ital. Sci. Nat. Milano Atti, 2:5, 8 (Angelinia) 1862 Osten Sacken, C. R. Dipt. N. A., 1:176 1863 Shiner, J. R. Fauna Austriaca Dipt., 2:396 1876 Bergenstamm, J. E. & Low, Paul Syn. Cecidomyidarum, p. 24 1888 Skuse, F. A. A. Linn. Soc. N. S. Wales Proc., 3:37, 39, 43, 110 1892 Rubsaamen, E. H. Berln. Ent. Zeitschr., 37:329, 392 1892 Theobald, F. V. Acct. Brit. Flies, 1:51 1896 Kieffer, J. J. Wien. Ent. Zeit., 15:91 (oft ym. Cecid. de Hur. & Alex... p. 25 1900 ————— Soc. Ent. Fr. Ann., 69:445-46 1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 387 1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:284 torr Felt, E. P. N. Y. Ent. Soc. Jour., 19:57 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 137 The genus Hormomyia, as originally proposed, was unfortunate in that its author attempted to include thereunder two very distinct forms, namely, a true Hormomyia represented by H. fasciata H. Loew not Meigen, now referred to H. dubitata Rubs., and a species closely allied to Phytophaga, namely, Mikiola fagi Hart. These very diverse forms were evidently associated because of apparent similarities, particularly as Kieffer has subse- quently made fagi the type of a new genus. We are constrained, after an examination of the literature, to hold Cecidomyia crassipes H. Lw. to be the type of this genus. Apparently ignoring characters given by Loew, Rondani attempted to limit the conception of Hormomyia to species having an equal number of antennal segments in both sexes and named as a type of this genus, H. cucullata Meig., a species apparently unknown — 210 NEW YORK STATE MUSEUM to Loew at the time the genus was erected. Furthermore, he pro- posed Angelinia for the species with males possessing twice as many antennal segments as the females. This latter is evidently true or nearly true of the type species of Hormomyia. It is to be noticed that Loew described the antennae of the female H. dubitata as having the flagellate segments plainly double, though Rubsaamen illustrates these segments as sessile, cylindric, with a length about four times the diameter and with very little or no indication of a median constriction. Typical species of Hormomyia are easily recognized by their large size, relatively heavy structure and in particular by the mesonotum Fig. 39 Hormomyia americana, side view of body of male showing in par- ticular the greatly produced mesonotum (enlarged, original) being greatly produced over the head (fig. 39). The antennae of our American forms, some of which are provisionally placed here, have from fourteen to twenty-seven segments, those of the male binodose and provided with three low though distinctly looped, frequently somewhat irregular, yet very characteristic circumfila (fig. 40). The antennal segments of the female are equally variable in number, may be distinctly binodose or cylindrical and mostly with two rarely with three circumfila. These latter are in some forms at least very nearly as well developed as in the male. ‘The species referable to this genus vary so greatly in structure and both sexes REPORT OF THE STATE ENTOMOLOGIST 1918 21i of so few have been reared that we are unable to find the limits of variation and to definitely associate the sexes. It is quite possible that some of the females placed in this genus may have to be located elsewhere when the two sexes are known. Fig. 40 Hormomyia americana: a, fifth antennal segment of male, only two setae represented; b, terminal antennal segment of male, setae not sketched in (enlarged, original) The palpi are more or less reduced and in most species are uni- articulate or biarticulate (fig. 44a). The wings are long and narrow, the third vein usually joining the margin at or beyond the apex (pl. 14, figs. 2-4). The claws (fig. 41) are long, stout, evenly curved, mostly simple and the pulvilli are greatly reduced in many species, specially in the males. The male genitalia are heavy, the basal clasp segment being stout while the terminal clasp segment is usually ob- tuse and with a more or less rudimentary spur. The dorsal plate is broadly emarginate while the ventral plate is usually short and relatively broad. The ovipositor of the female is short and with broad terminal lobes. 14 212 NEW YORK STATE MUSEUM Several European species have been reared from Carex. This is likewise true of H. caudata Felt and it is probable that a number of other American species live in associated plants. ey . fee tM poe om 0) Ny? We? Nyy yn W sO) Ya Qn i ANAICL S Chat’ 4 if A Besa nr eitoansisy / ‘y ip z Fig. 41 Hormomyia americana: a, side view of apex of last tarsal segment and claws of the foreleg; 6, same of last tarsal segment and claw of the hind leg (enlarged, | riginal) Key to Species Males a Antennae composed of more than 20 segments b Abdomen yellowish; length 5 mm. Antennae with 25 segments, the palpiguniarticulatesse eee sarees een nae americana Felt, C. 91 bb Abdomen yellowish with the fifth, sixth and seventh segments dull orange; length 7mm. Antennae with 27 segments, the palpi biarticulate; vent- ral plate long, broad and broadly rounded..palustris Felt, C. 1205 bbb Abdomen uniformly fuscous yellowish; length 6 mm. Antennae with 26 segments, the palpi biarticulate; ventral plate long, broad, deeply and tnansularlyjemarginate sees eee eee needhami Felt, C. 788 Females a Large, at least 4 mm long b 24 antennal segments, length 7 mm. Abdomen a variable yellowish; antennal segments with 2 circumfila, the fifth cylindric, with a length three times its diameter and with a distinct constriction at the basal third Vlobesibroadly, ovall..:)c) eee ae. cincta n.sp. C. 1345 REPORT OF THE STATE ENTOMOLOGIST 1918 213 bb 23 antennal segments, length 8 mm. Abdomen deep salmon; antennal segments with 2 circumfila, the fifth cylindric, with a length two and one-half times its diameter and with but a slight constriction at the basal third; lobes narrowly oval maxima n. sp. C. 1371 bbb 20 antennal segments or more. Abdomen yellowish brown; antennal segments with 2 circumfila, the fifth cylindric, with a length three times iieCIAIMEC ETA SER Ll ach awe. tier efor aie, montana n.sp.C. 1071 bbbb 18 antennal segments. Abdomen reddish brown; 3 circumfila, fifth antennal segment with a stem one-fourth the length of the cylindric basal enlargement, which latter has a length twice its diameter........ pudica Felt, C. 1465 . bbbbdb 18 antennal segments. Abdomen dark brown; antennal segments with 3 circumfila, the fifth cylindric, with a length two and one-half times SMG IATIACLETNS My psi cis. cis Laois ayceels «Laat he Slane atlantica Felt, C. 815 bbbbbb 14 antennal segments c Length 4mm. Flagellate antennal segments with 3 circumfila d Abdomen yellowish orange, the fifth antennal segment with a length four times its diameter. Reared from a bud gall on SCUS SMM Rereyeyeeces lies ciineye ca siete caudata Felt, C. a2718 dd Abdomen dark brown, the fifth antennal segment distinctly binodoseaeerr. fs sincs on coloradensis Ckll, C. arg19 aa Small species, length 3.5 mm or less b Flagellate antennal segments, binodose, with 3 circumfila, abdomen golden Mell GN.: seers < te ecbryjoud'< aan toes os alexanderi n.sp., C. 1353 Hormomyia americana Felt 1907 Felt, E.P. N. Y. State Mus. Bul. 110, p. 125; separate, p. 28-29 1908 ————— N. Y. State Mus. Bul. 124, p. 387 This striking form was first taken in a trap lantern at Nassau, N. Y., May 31, 1906 and again May 28, 1908. Male. Length 5 mm. Antennae as long as the body, sparsely fine haired, fuscous yellowish, distal segments tinged with carmine; twenty-five segments, the fifth (fig. 40a) with stems one and one-half and one and one-fourth times their length, respectively; terminal segment (fig. gob) reduced. Palpi one much produced segment, the basal fifth greatly enlarged and tapering suddenly to the Fig. 42 Hormomvia americana, halter of maie (enlarged. original) 214 NEW YORK STATE MUSEUM distal slender, slightly curved portion; face yellowish brown. Mesonotum with the anterior median triangular area and posterior sublateral irregular areas dark brown, the median posterior area and oblique sublateral anterior areas and the lateral area bordering the posterior submedian darker areas, fuscous yellowish. Scutellum yellowish, postscutellum yellowish anteriorly and laterally, black on the median posterior area. Abdomen semitransparent, yellowish, each segment tinged with orange basally, the sixth and seventh segments nearly suffused with orange, genitalia reddish brown with fuscous markings. Wings (pl. 14, fig. 4) hyaline, costa pale straw tinged with carmine, the third vein joining the margin well beyond the apex; halteres (fig. 42) very long, slender, yellowish transparent, distally fuscous yellowish. Coxae fuscous yellowish tinged with reddish, femora and tibiae fuscous yellowish, tarsi slightly darker, tinged with reddish; claws stout, strongly curved at the basal fourth (fig. 41). Genitalia (fig. 43); basal clasp segment short, stout; Fig. 43 Hormomyia americana, genitalia of male (enlarged, original) terminal clasp segment slightly swollen at the base; dorsal plate broad, deeply and broadly incised, the lobes broadly rounded; ventral plate stout, broadly rounded though with a slight median emargination. Type Cecid. or. Hormomyia palustris Felt 1907 Felt, E. P. New Species of Cecidomyiidae II, p. 19 1908 ——_—_— N. Y. State Mus. Bul. 124, ps 300; 387 Males of this species were captured May 20, 1907, in considerable numbers by Dr James G. Needham on the lake marsh near the Limnological laboratory at Ithaca, N. Y. A close search failed to disclose any females. REPORT OF THE STATE ENTOMOLOGIST 1918 215 Male. Length 7 mm. Antennae nearly as long as the body, thickly haired, pale yellowish; twenty-five to twenty-seven seg- ments, the fifth with the basal stem very short, the distal as long as the diameter; terminal segment reduced, narrowly oval. Palpi; the first segment short, stout, irregular, with a length three times its diameter, the second one-half longer than the first, more slender. Face fuscous. Mesonotum brown with broad submedian lines, and a posterior yellowish median area. Scutellum pale yellowish, post- scutellum yellowish margined posteriorly with fuscous. Abdomen yellowish with the first four segments mostly pale yellowish trans- parent, the fifth, sixth and seventh dull orange. Genitalia fuscous yellowish. Wings hyaline, costa light brown, the third vein just beyond the apex. Halteres pale yellowish white. Legs long, slender, pale yellowish; claws long, stout, evenly curved, the pulvilli nearly one-half the length of the claws. Genitalia; basal and terminal clasp segments short, stout; dorsal plate short, broad, broadly and slightly emarginate, the lobes obliquely truncate; ventral plate long, stout, broadly rounded. Harpes stout, divergent, broadly rounded. ~ Described from alcoholic specimens. Type Cecid. 1205. Hormomyia needhami Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 160 1908 ————— N.Y. State Mus. Bul. 124, p. 387 This species was captured by Dr James G. Needham at Lake Forest, Ill., June 6, 1906. Male. Length 6mm. Antennae extending to the fourth abdom- inal segment, very long, finely haired, pale fuscous yellowish, the stems semitransparent; twenty-six segments, the fifth with stems one-half and one and one-half times their diameters respectively; terminal segment reduced, short, broadly rounded, thick and irreg- ular circumfila. Palpi, the first segment short, stout, with a length about one-half greater than its diameter, the distal segment twice the length of the first; face fuscous. Mesonotum yellowish, the anterior and lateral margins bordered by fuscous, the latter slightly produced on the median line. Scutellum and postscutellum pale yellowish, the latter dark brown posteriorly. Abdomen fuscous yellowish, sparsely clothed with fine hairs. Wings hyaline, costa light brown, the third vein just before the apex; halteres fuscous yellowish. Legs a variable fuscous yellowish; claws rather long, stout, slightly curved, pulvilli short, about one-half the length of the claws. Genitalia (pl. 18, fig. 1); basal clasp segment short, stout a roundly triangular lobe at the basal third; terminal clasp segment long, stout; dorsal plate short, broadly and triangularly emarginate, the lobes broadly triangular; ventral plate long, broad, deeply and triangularly emarginate, the lobes subtriangular. Type Cecid. 788. 216 NEW. YORK STATE MUSEUM Hormomyia cincta n. sp. This large species was captured May 21, 1906, by S. A. Shaw at Hampton, N. H., and transmitted to this office for study through the courtesy of Prof. C. W. Johnson of Boston, Mass. Female. Length 7 mm. Antennae rather thickly haired, fuscous yellowish; twenty-four segments, the fifth with a stem about one- sixth the length of the subcylindric basal enlargement, which latter has a length three times its diameter, is slightly constricted near the basal third; low circumfila occur near the basal third and apically; terminal segment reduced, narrowly oval. Palpi probably biarticu- late. Mesonotum a variable reddish brown, the submedian lines and posterior median area fuscous yellowish. Scutellum yellowish, postscutellum dark brown. Abdomen a variable yellowish, the segments margined posteriorly with dark brown and with a broad, indeterminate, dark brown band laterally; ovipositor pale orange; venter apparently concolorous with the dorsum. Wings hyaline, costa pale brown, the third vein joining the margin at the apex. Halteres fuscous yellowish. Coxae a variable fuscous yellowish; femora and tibiae mostly yellowish brown, the latter slightly fuscous apically; tarsi mostly fuscous yellowish; claws long, stout, slightly curved, the pulvilli about one-third the length of the claws. Ovi- positor short, the lobes broadly oval. Type Cecid. 1345. Hormomyia maxima n. sp. This species was swept from palustral grasses at Johnstown, N. Y., June 8, 1909, by C. P. Alexander. This may prove to be the female of H. americana Felt. Female. Length 8mm. Antennae about three-fourths the length of the body, sparsely haired, pale yellowish; twenty-three segments, the fifth with a stem about one-fourth the length of the cylindric basal enlargement, which latter has a length two and one-half times its diameter, is slightly constricted near the basal third, low circum- fila near the basal third and apically; terminal segment slightly produced, with a length three times its diameter or with a rudi- mentary additional segment. Palpi; uniarticulate, the basal third greatly thickened ventrally and broadly rounded, the distal portion slender, strongly curved at the basal third and tapering to an irregular, setose apex. Mesonotum reddish brown. Scutellum and postscutellum pale yellowish orange, the latter broadly fuscous posteriorly. Abdomen deep salmon, the dorsal sclerities sparsely fused with fuscous scales; ovipositor yellowish, light fuscous apically. Wings hyaline, costa pale straw, the third vein joining the margin beyond the apex. Halteres whitish basally, fuscous yellowish apically. Coxae and legs mostly pale straw, the tibiae and tarsi slightly darker; claws long, irregularly curved, simple, the pulvilli one-fourth the length of the claws. Ovipositor short, the terminal lobes narrowly rounded. Type Cecid. 1371. REPORT OF THE STATE ENTOMOLOGIST 1918 27 Hormomyia montana n. sp. This species, loaned for study through the courtesy of the United States National Museum, was taken in Colorado. Female. Length 5 mm. Antennae extending to the base of the abdomen, rather thickly haired, light yellowish; twenty and possibly more segments, the fifth cylindric, with a length fully three times its diameter; low circumfila occur at the basal third and subapically. Palpi; the first segment short, stout, subquadrate, the second stout, with a length about five times its diameter, thickly setose. Meso- notum reddish brown, the submedian lines rather thickly haired. Scutellum fuscous yellowish brown, postscutellum reddish and dark brown, fuscous yellowish anteriorly. Abdomen a variable yellowish brown, the fourth, fifth and sixth segments somewhat fuscous pos- teriorly. Wings hyaline, costa light.brown, the third vein uniting with the margin well beyond the apex. Halteres yellowish brown. Legs a nearly uniform fuscous yellowish; claws stout, slightly curved, the pulvilli shorter than the claws. Ovipositor short, the lobes broadly oval. Type Cecid. 1071. Hormomyia pudica Felt 1913 Felt, E. P. Psyche, 20:146 The species was received through Prof. C. W. Johnson of the Boston Society of Natural History and labeled: ‘“‘June 13, 1907, Hampton, N. H., S. A. Shaw, 1124.”’ It presumably has eighteen segments and is easily separated from H. atlantica by the three circumfila and the long uniarticulate palpi. Hormomyia atlantica Felt 1908 Felt, E.P. N. Y. State Mus, Bul., 124, p. 387 This species was taken May 14, 1901 at Clementon, N. J., by Prof C. W. Johnson. Fig. 44 Hormomyia atlantica: a, palpus of female; }, fifth antennal segment of female (enlarged, original) 218 NEW YORK STATE MUSEUM Female. Length 5 mm. Antennae hardly extending to the base of the abdomen, thickly haired, fuscous yellowish; eighteen sessile segments, the fifth (fig. 44b) cylindric, with a length two and one-half Fig. 45 Hormomyia atlantica, side view of apex of distal tarsal segment and claws of female (enlarged, original) times its diameter and three rather strongly elevated circumfila, the first near the basal third, the second near the distal third and the third subapical; terminal segment greatly reduced, broadly sub- oval. Palpi (fig. 44a); the first segment short, stout, subquadrate 4 ? ves 3 r acs Fig. 46 Hormomyia atlantica, side view of apex of ab- domen and ovipositor of female (enlarged, original} REPORT OF THE STATE ENTOMOLOGIST 1918 219 the second a little longer, subconical; face fuscous yellowish. Thorax greatly produced over the small head. Mesonotum with the median subtriangular area dark brown, the irregular lateral areas light brown, somewhat diffuse, the broad submedian lines and the pos- terior median area fuscous yellowish. Scutellum pale yellow, post- scutellum reddish yellow. Abdomen sparsely clothed with fine setae, shining dark brown, the third and fourth segments narrowly margined posteriorly with yellowish, the seventh and eighth seg- ments mostly yellowish, the latter and the base of the following tinged with bright red, terminal lobes dark fuscous, slightly yel- lowish basally. Wings (pl. 14, fig. 2) hyaline, costa light brown, the third vein just beyond the apex. Halteres pale yellowish trans- parent, slightly fuscous apically. Legs light fuscous yellowish, the distal tarsal segments somewhat darker; claws (fig. 45) long, stout, curved near the basal third, pulvilli about one-half the length of the claws. Ovipositor (fig. 46) short, the terminal lobes long, nar- rowly oval. Type Cecid. 815. Hormomyia caudata Felt 1916 Felt, E.P. N.Y. Ent. Soc. Jour., 24:176 1918 ———— N. Y. State Mus. Bul. 200, p. 27 This species was reared April 29, 1915, by George G. Ainslie from what were evidently modified buds or shoots of a sedge, probably cyperus species collected at Clarksville, Tenn. The galls occurred at the very base of the plant. The midge is easily distinguished from other known females by. the greatly produced fifth antennal segment in connection with its moderate size. Hormomyia coloradensis Ckll. 1908 Cockerell, T. D. A. Can. Ent., 40:421-22 This species was taken by Professor Cockerell September 24, 1908 on a street pavement at Boulder, Col. The following descrip- tion has been drafted from types he kindly placed at our disposal. Female. Length s.25 mm. Antennae extending to the fourth abdominal segment, thickly haired, fuscous yellowish; fourteen segments, the fifth greatly produced, binodose, with a length more than four times its diameter; basal portion of the stem irregular, with a length one-half greater than its diameter, the distal part with a length half its diameter; basal enlargement subglobose, with a sparse whorl of stout setae and a circumfilum; distal enlargement produced, with a length nearly twice its diameter and subbasal and subapical circumfila, the loops long; a scattering whorl of stout setae near the middle. Palpi; the first segment narrowly oval, the second subquadrate, with a length three times its diameter, the third one-half longer, slender, and the fourth a little longer and more slender than the third. Mesonotum greatly produced over the head, reddish brown, the broad submedian lines, the posterior median area and an irregular space at the base of the wings dark orange. Scutellum pale yellowish, sparsely haired, postscutellum yellowish, 220 NEW YORK STATE MUSEUM Abdomen dark brown, basally dark orange, the segments sparsely haired; ovipositor pale yellowish. Wings hyaline, costa pale brown, the third vein uniting with the margin at the apex. Coxae and base of femora reddish orange, the most of femora, tibiae and tarsi dark brown; claws long, stout, evenly curved, the pulvilli rudi- mentary. Ovipositor short, the lobes lanceolate. Type Cecid. argig. Hormomyia alexanderi n. sp. This midge was swept from palustral grasses at Johnstown, N. Y., July 7, 1909 by C. P. Alexander. Female. Length 3.5 mm. Antennae nearly as long as the body, thickly haired, pale fuscous yellowish; probably fourteen segments, the fifth binodose, with a total length about five times its diameter, the basal and distal portions of the stem, each a little longer than their diameters; the basal enlargement subglobose, a sparse whorl of stout setae and a circumfilum, the loops long; distal enlargement broadly oval, with a length nearly twice its diameter; subbasal and subapical circumfila, the loops long and a scattering whorl of stout setae. Palpi; basal segment rather stout, with a length five times its diameter, the distal segment greatly produced, with a length nearly three times that of the first. Mesonotum golden reddish. Scutellum and postscutellum yellowish. Abdomen a variable golden yellowish, sparsely haired. Wings subhyaline, thickly clothed with fuscous hairs, costa fuscous, the third vein uniting with the margin a little beyond the apex. MHalteres yellowish orange. Coxae and femora mostly yellowish orange, the tibiae fuscous orange, tarsi a little darker; claws long, evenly curved, the pulvilli rudimentary. Ovipositor short, the lobes broadly and irregularly oval. Type @eciday ras: i TRISHORMOMYIA Kieff. 1912 Kieffer, J. J. Neue Gallmucken-Gattugen, Bitsch, p. 2 1913), =| | Gens Insect. fase: 152, p. 139-40 Certain species in this genus are separated with difficulty from Hormomyia Kieff., though the extreme forms cannot be confused with typical members of the older genus. The type is T. strobli Kieff. A careful study of American material has resulted in separating species referable to this genus by the following characters. The insects are smaller and the mesonotum less distinctly produced over the head than in Hormomyia. There are fewer antennal segments, fifteen (the fifteenth being rudimentary) being the maximum and most species having but fourteen. The flagellate antennal segments of the male have the enlargements more produced than in Hormomyia H. Lw., and the circumfila are relatively longer and there are marked though not easily characterized differences in the genitalia. The flagellate antennal segments of the female are cylindrical, mostly REPORT OF THE STATE ENTOMOLOGIST 1918 221 with three circumfila though two aberrant Species, namely T- elarkei Felt and T. verruca Walsh have but two circumfila. There is a distinct tendency toward a prolongation of the ovipositor, this organ in Trishormomyia being rather to moderately long, T. helianthi Brodie showing the maximum development. It is possible that further rearings, particularly of the larger forms placed in Hormomyia H. Lw., will result in a somewhat revised grouping of these species. Key to Species Males a Antennae composed of 15 segments, the fifteenth rudimentary b Palpi biarticulate c Second palpal segment moderately long, stout d Abdomen dark brown, the eighth segment mostly yellowish, the fifth antennal segment having stems with a length three- fourths and as long as their diameters respectively........... consobrina Felt, C. 1204 ce Second palpal segment very long, slender, with a length about ten times its diameter d Abdomen fuscous yellowish, the fifth antennal segment having stems one and one-half and two and one-half times their diameters respectively............. saturni Felt, C. 1493 dd Abdomen pale yellowish, the fifth antennal segment having stems with a length one and one-half and one and one-fourth times their diameters respectively........... shawi Felt, C. 1423 ddd Abdomen dark brown, the fifth antennal segment having stem, nearly equal, each with a length one-half greater than the Glieuaa ye Here PNR ots a Pee ese fenestra Felt, C. 1596 aa Antennae composed of 14 segments b Palpi triarticulate c¢ Abdomen shining black, length 5 mm; fifth antennal segment with stems one and one-half and equal their diameters respectively. Ventral plate spatulate and almost truncate.........---..+++-5 johnsoni Felt, C. Sar cc Abdomen dark red; length 4 mm; fifth a1.tennal segment with stems one and one-half and one and one-fourth times their diameters respectively; ventral plate short, broad, roundly emarginate. Reared from cockscomb gall on crataegus leaves.........--+-+-- crataegifolia Felt, C. a1362 ccc Abdomen dark brown; length 3 mm; fifth antennal segment stems each with a length one-half greater than the diameter; ventral plate broad, broadly emarginate..........-- dilatatam. spy C407 ccce Abdomen dark reddish brown; length 1.5 mm; flagellate antennal segments with stems one and one-fourth and one and one-half times their diameters respectively; ventral plate short, broadly EOUITIG CGP ore sect one sc icic Sole ierenerovaieteielst avers bulla Felt, C. 1267 222 NEW YORK STATE MUSEUM ccccc Abdomen pale reddish; length 4 mm; fifth antennal segment with stems one and one-half and two and one-half times their diameters respectively; ventral plate narrow, narrowly incised............. UNn'Cisayn. sp. C. 527 bb Palpi biarticulate c Abdomen dark reddish brown; length 2 mm, the second palpal seg- ment not three times the length of the first, the fifth antennal seg- ment with stems two and one and one-half times their diameters respectively; ventral plate long, broad, roundly and slightly emarginate. Reared from truncate gall on Amelanchier.......... canadensis Felt, C. a1758, a1558, a432 cc Abdomen dark yellowish brown; length 2.5 mm, flagellate antennal segments with stems one-half and three-fourths their diameters respectively; second palpal segment reduced; ventral plate short; reared from a tubular stem gall on Helianthus................. helianthi Brodie, C. a2453 ccc Abdomen dark reddish brown; length 1.5 mm. Flagellate antennal segments with stems with a length one and one-fourth and one and one-half times their diameters respectively, second palpal seg- ment greatly produced; ventral plate short, broadly rounded..... bulla Felt, C. 1267 cccc Abdomen yellowish brown; length 5 mm. Ventral plate moderately long and broadly rounded........... proteana Felt, C. 1521 Females a Large, at least 4mm long. The flagellate antennal segments with 3 circumfila b Abdomen dark brown, the fifth antennal segment with a length two and one-half times its diameter................. modesta Felt C. 1346 bb Abdomen dark reddish, the fifth antennal segment with a length three and one-half times its diameter, reared from a cockscomb gall on crataegusileaf. ieee cere eee crataegifolia Felt, C. a1362 aa Small species, length 3.5 mm or less b Antennal segments with 3 circumfila c Abdomen dark carmine; ovipositor short, reared from a truncate leaf gallon Amelanchier.........canadensis Felt, C. a1758 cc Abdomen dark brown, ovipositor as long as the abdomen, reared from a'tubular’stem ‘gall’on’ Helianthus e410) Ons f et 9. ae See helianthi Brodie, C. a2453 ccc Abdomen brownish yellow, ovipositor one-half the length of the abdomen, reared from a globose leaf gall on Helianthus......... braille Pelt Cs 1267, bb Antennal segments with 2 circumfila c¢ Abdomen dark reddish, the fifth antennal segment with a length two and one-half times its diameter, the second palpal segment three times as long as the first. Reared from a terminal bud gall on PITA Sa teh LAN ade MOU ARE ae RRR clarkei Felt, C. a1759a cc Abdomen dark red, the fifth antennal segment with a length twice its diameter, the second palpal segment with a length one-half greater than its diameter. Reared from a subconic willow leaf C2 UNO BE ER tee wnat ee Ten (Nate he verruca Walsh, C. a1785 REPORT OF THE STATE ENTOMOLOGIST 1918 223 Trishormomyia consobrina Felt 1907 Felt, E. P. New Species of Cecidomyiidae II, p. 18 (Hormomyia) 1908) ———— "N.Y. State Mus. Bul. 124, p. 299, 387 (Hormomyia) This form was taken on Azalea at Albany, N. Y., June 6, 1907. Male. Length 5.5 mm. Antennae extending to the fifth abdom- inal segment, sparsely haired, dark brown; fifteen segments, the fifth with stems three-fourths and as long as the diameter: terminal segment reduced, irregularly fusiform. Palpi; the first segment stout, tapering distally, with a length three times its diameter, the second one-half longer, slender, tapering to a subacute apex. Face dark brown and yellowish. Mesonotum dark brown, the submedian lines sparsely haired. Scutellum pale orange yellow, postscutellum darker. Abdomen dark brown, the eighth segment mostly yel- lowish. Genitalia fuscous. Venter pale yellowish orange. Wings hyaline, costa light brown, the third vein joining the margin just beyond the apex. MHalteres yellowish basally and apically, the stem semitransparent. Legs long, slender, light fuscous yellowish; claws long, stout, evenly curved, the pulvilli one-third the length of the claws. Genitalia; basal clasp segment long; terminal clasp segment long, stout; dorsal plate short, broad, broadly emarginate, the lobes obliquely truncate; ventral plate long, spatulate, strongly constricted near the middle, roundly truncate. Type Cecid. 1204. Trishormomyia shawi Felt 1913 Felt, E. P. Psyche, 20:145 (Hormomyia) This species is separated from the allied T. consobrina Felt by colorational characters and the extremely slender second palpal segment. It was received from C. W. Johnson of the Boston Society of Natural History and labeled: “‘ VIII-20, 1909, Hampton, Ne 69.7. SAW, 117. Trishormomyia saturni Felt 1914 Felt, E.P. N.Y. Ent. Soc. Jour., 22:133 (Hormomyia) The midge was taken August 24, 1909, by C. P. Alexander in th® Adirondacks, altitude rs40 feet. It may be separated from the related T. shawi Felt by the darker abdomen and the distinctly longer stems of the flagellate antennal segments. Trishormomyia fenestra Felt 1915 Felt, E. P. Can. Ent., 47:231-32 (Hormomyia) The midge is closely related to T. shawi Felt, from which it is easily distinguished by marked differences in color characters and in the structure of the basal clasp segment. Both sexes were taken by C. P. Alexander, August 22, 1910, at Woodworth’s Lake, Fulton aay county, N. Y. 224 NEW YORK STATE MUSEUM Trishormomyia johnsont Felt 1907 Felt, E. P. New Species of Cecidomyiidae II, p. 18-19 (Hormomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 299-300, 388 (Hormomyia) This species was taken at Auburndale, Mass., May 28, 1906 by Prof. C. W. Johnson. Male. Length 5mm. Antennae extending to the fourth abdom- inal segment, Sees haired, dark brown; fourteen segments, the ; fifth (fig. 47) with stems one and one- fourth and three-fourths times their diameters; terminal segment produced, the distal portion of the stem with a small subglobular enlargement. Cir- cumfila, especially on the distal enlarge- ment, very irregular. Palpi; the first segment short, subrectangular, the second about as long as the third, the third more than twice the length of the second, more slender. Face, dark reddish brown. -Mes- onotum dark brown, the submedian lines narrow, fuscous yellowish. Scutellum brown, reddish apically and laterally, postscutellum dark brown, reddish apic- ally. Abdomen sparsely haired, shining black. Genitalia reddish brown, the term- inal clasp segment distally, black. Wings hie |) pl 14) ig." 3) hyaline. costal'reddish _ Fig. 47 | Trishormomyia rown, the third vein just beyond the johnsoni, sixth antennal seg- apex. Halteres pale reddish yellow ba- ment of male, only one seta sally, slightly fuscous apically. Legs a sketched in (enlarged, orig- variable fuscous yellowish, the distal tarsal inal) segments darker. Genitalia; basal clasp segment long, slender, a quadrate lobe at the basal third; terminal clasp segment long, stout; dorsal plate short, broad, deeply and broadly incised, the lobes broadly rounded: ventral plate spatulate apically, broadly rounded laterally, truncate distally. Type Cecid. 821. Trishormomyia crataegifolia Felt 1907 Felt, E. P. N. Y. State Mus. Bul. rro, p. 160 (Hormomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 388 (Hormomyia) 1908 Jarvis, T.D. Ent. Soc. Ont., 38th Rep’t, p. 86 (Hormomyia) 1909 Felt, E. P. Ent. Soc. Ont., 39th Rep’t, p. 45 (Hormomyia) 1909 Jarvis, T. D. Ent. Soc. Ont., 39th Rep’t, p. 83 (Hormomyia) 1915 Felt, E.P. N.Y. State Mus. Bul. 175, pl. 3, fig. 8 (Hormomyia) 1918 ————— N.Y. State Mus. Bul. 200, p. 136 (Hormomyia) This species was reared in early April 1907 from deep-red larvae which deserted cockscomb galls on crataegus leaves the preceding REPORT OF THE STATE ENTOMOLOGIST 1918 225 fall. The galls are very local in the vicinity of Nassau, we have received them from Michigan, and Jarvis records them as somewhat rare at Ontario, Canada. Eupelmus dryorhizoxeni Ashm. and Torymus species were reared from this gall. Gall. Length 1 cm. Height 2 cm, strongly compressed, crinkled with an irregular, serrate edge. Color mostly green, irregularly marked with yellowish, especially in the older galls, portions of the tips frequently turning brown. Cocoon. Length 4 mm, diameter 1.5 mm. This is composed of a few whitish threads to which numerous fine particles of sand adhere. The structure is so open that the deep red body of the larva can be easily seen. Male. Length 4 mm. Antennae a little longer than the body, sparsely haired, reddish brown; fourteen segments, the fifth with stems each one-fourth longer than TT their diameters; terminal segment pro- duced, the distal enlargement broad, subglobular and with a slightly pro- longed subconic tip. Palpi; the first segment stout, subrectangular, the sec- ond shorter, broadly oval, the third one- half longer, narrowly oval. Mesonotum dark brown, the submedian lines sparsely clothed with whitish hairs and a few scattered hairs on the lateral bor- ders. Scutellum dark brown, a few whitish hairs on each side, postscutel- lum slightly darker. Abdomen dark red, pleurae darker. Wings hyaline, costa reddish brown, the third vein Fig. 48 Trishormomyia uniting with the marginalittle beyondthe ¢rataegifolia, fifth antennal apex; halteres and coxae yellowish red, segment of female (enlarged, the remainder of the legsalittle paler, with original) the tarsi somewhat whitish; claws stout, gif evenly curved, the pulvilli shorter than the claws. Genitalia; basal clasp segment long, stout; terminal clasp segment stout, slightly swollen near the distal third and apically; dorsal plate short, broad, broadly rounded; ventral plate short, broad, broadly and roundly emarginate, the lobes irregularly rounded. ] Female. Length 4 mm. Antennae extending to the fourth abdominal segment, yellowish red or reddish, sparsely haired; four- teen segments, stem of fifth (fig. 48) with a length about one-sixth of the subcylindric basal enlargement, which latter has a length fully three times its diameter, is slightly constricted near the basal third; heavy, though rather short, circumfila at the basal fourth, near the middle and subapically, the loops a little longer than the distance between the supporting stems; terminal segment produced, slender, with an irregular apical appendage. Palpi; the first segment long, irregularly rectangular, the second short, irregularly oval, the third 226 NEW YORK STATE MUSEUM a little longer and broader. Ovipositor, terminal lobes short, broadly oval. Other characters about as in the male. Type Cecid. a1362. Trishormomyia incisa n. sp. This form was taken in a trap lantern at Nassau, N. Y., July 8, 1goo. Male. Length 4 mm. Antennae nearly as long as the body: thickly haired, pale yellowish tinged with carmine apically, yellowish basally; fourteen segments, the fifth with stems one and one-half and two and one-half times their diameters; terminal segment some- what produced, the distal enlargement broadly oval, irregular. Palpi; the first segment oval, the second moderately stout, with a length four times its diameter, the third as long as the second. Face fuscous yellowish. Mesonotum pale yellowish, irregularly tinged with carmine anteriorly and laterally. Scutellum fuscous yellowish with sparse apical setae, postscutellum a little darker. Abdomen pale reddish, darker basally, the segments dorsally tinged with fuscous; genitalia yellowish and dark carmine, thickly setose. Wings hyaline, costa light brown; the third vein uniting with costa beyond the apex. Halteres fuscous yellowish. Legs a pale straw, rather thickly haired; claws long, slender, evenly curved, the pulvilli rudi- mentary. Genitalia; basal clasp segment stout; terminal clasp segment long, stout; dorsal plate broad, broadly and triangularly emarginate, the lobes narrowly rounded; ventral plate long, narrow, narrowly incised. Type Cecid. 527. Trishormomyia dilatata n. sp. This species was taken in a trap lantern at Newport, N. Y., June 27, 1906. Male. Length 3 mm. Antennae as long as the body, sparsely haired, light brown; fourteen segments, the fifth with stems one and one-half times their diameters; terminal segment somewhat produced, the distal enlargement narrowly oval. Palpi; the first segment subquadrate, the second somewhat produced, the third longer and tapering to a slender, acute apex. Face yellowish brown. Mesonotum pale yellowish brown with an ill-defined sublateral carmine spot near the base of the wings. Scutellum dark carmine, yellowish basally, postscutellum yellowish. Abdomen dark brown, darker basally, the segments margined with brownish orange. Wings (pl. 15, fig. 1) subhyaline, costa dark brown, the third vein uniting with costa beyond the margin. Coxae yellowish orange with vari- able carmine markings. Legs fuscous yellowish, variably tinged with carmine at the articulations; claws long, slender, slightly curved, the pulvilli rudimentary. Genitalia (pl. 18, fig. 3); basal clasp segment stout; terminal clasp segment long, stout, and triangularly emarginate; dorsal plate broad, broadly emarginate; ventral plate broad, broadly emarginate. Type Cecid. 407. REPORT OF THE STATE ENTOMOLOGIST 1918 227 Trishormomyia helianthi Brodie 1894 Brodie, William. Biol. Rev. of Ont., 1: 44-46 (Cecidomyia) 1909 Jarvis, T. D. Ent. Soc. Ont., 39th Rep’t, p. 83 (Cecidomyia) 1913 Felt, E.P. Can. Ent., 40:418 (Hormomyia) 1918 N: Y. State Mus. Bul. 200, p. 206, 207 (Hormomyia) This species produces on Helianthus more or less cylindrical flask-shaped galls (fig. 49, pl. r1, fig. 2) having a length of 10 to 25 mm and a diameter of from 1.5 to 5 mm. There may be one to ten galls in an axile, firmly attached to the stem by an expanded base and projecting in various directions, usually upwards, often at right Fig. 49 Trishormomyia helianthi, tubular galls on Helianthus (author’s illustration) angles to the stem, and occasionally downward. They occur on the upper third of the stems of H. decapetalus and H. divari- catus. They are also found on H. annuus. The gall has been collected about Toronto, Canada, Evanston, IIl., and Salt Lake City, Utah. It is local at Evanston, Ill, occurring in September (L. H. Weld). Trishormomyia bulla Felt 1867 Walsh, B.D. Ent. Soc. Phila. Proc., 6:226 (Cecidomyia) 1894 Brodie, William. Biol. Rev. of Ont., 1:74 (Cecidomyia) 1909 Jarvis, T. D. Ent. Soc. Ont., 39th Rep’t, p. 83 (Cecidomyia) 1912 Cosens, A. Can. Inst. Trans., 9:317 (Cecidomyia) 1914 Felt, E. P. Can. Ent., 46:286-87 (Hormomyia) 1918 ————__ N.Y. State Mus. Bul. 200, p..206 (Hormomyia) This species produces subglobular yellowish galls (plewnhpligens) about the size of large peas on Helianthus leaves, the deformities being about equally prominent on both surfaces and irregularly located, however, usually near the midrib. The gall has been recorded from Ontario, Canada, and Evanston, Ill. It occurs com- monly in July on plants in a deep rich soil at North Evanston, Ill. 15 228 NEW YORK STATE MUSEUM (L. H. Weld). The midge is closely related to T. helianthi Brodie from which it may be separated by its smaller size, longer stems of the antennal segments of the male and the distinctly longer palpi of the female. Trishormomyia proteana Felt 1914 Felt, E.P. Psyche, 20:113 (Hormomyia) The midge was collected by C. W. Johnson at Auburndale, Mass., May 28th, and is easily distinguished from other large Hormomyias by the antennal segments and specially the cylindric basal flagellate antennal segments. Trishormomyia canadensis Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 388 (Hormomyia) 1910 Stebbins, F. A. Springfield Mus, Nat. Hist. Bul. 2, p. 39 (Eriophyes, in error) 1915 Felt, E.P. N. Y.State Mus. Bul. 175, pl. 4, figs. 17, 17 (a) (Hormomyia) 1918 ————— N.Y. State Mus. Bul. 200, p. 134, 135 (Hormomyia) This species was reared in early April from galls (fig. 50) on shad- bush, Amelanchier canadensis, taken in September 1907, by Cora H. Clarke at Magnolia, Mass., the deep orange larvae deserting the galls in the fall and hibern- ating in the soil. It has been recorded from Spring- field, Masse and) occurs) about Albany. IN oY: Torymus ? ebria O.S5S. has been reared from this gall. Gall. Length about 5 mm, projecting on the un- der side of the leaf, mostly greenish and tapering to a deep reddish lipped extremity. The upper surface of the leaf is marked by a slightly rounded elevation with a thick, whitish, woolly covering. The galls Fig. 50 Tris- are monothalamous and may occur singly or in hormomyia clusters. canadensis, Female. Length 3 mm. Antennae extending to lipped _galls_ the third abdominal segment, sparsely haired, yellow- on Juneberry ish brown, fuscous basally; fourteen subsessile cy- leaf (author’s Jindric segments, the fifth with a length about illustration) twice its diameter; circumfila at the basal third, near the middle and subapically, the loops with a length about equal to one-half the distance between their bases; terminal segment reduced, narrowly rounded. Palpi; the first segment stout, irregularly oval, the second more than twice the length of the first, tapering apically. Face fuscous brown. Mesonotum dark reddish brown, the submedian lines sparsely haired. Scutellum dark reddish brown, postscutellum reddish; pleurae a variable fuscous orange and REPORT OF THE STATE ENTOMOLOGIST 1918 229 fuscous brown. Abdomen nearly naked, dark carmine; terminal seg- ment somewhat fuscous. Ovipositor dark yellowish. Wings hyaline costa yellowish brown, the third vein just beyond the apex. Hal- teres dull orange basally, yellowish carmine apically. Coxae fuscous apically. Legs mostly light fuscous yellowish, the fifth tarsal seg- ment and claws fuscous, the latter stout, evenly curved, the pulvilli as long as the claws. Ovipositor short, the terminal lobes stout and tapering to a narrowly rounded apex. Male. Length 2mm. Antennae as long as the body, sparsely haired, reddish brown, dark brown basally; fourteen segments, the fifth with stems twice and one and one-half times their diameters: terminal segment, distal enlargement reduced, broadly oval. Palpi; the first segment subquadrate, the second twice the length of the first, stout, narrowly rounded distally. Face dark brown. Mesonotum very dark brown, the submedian lines sparsely haired. Scutellum dark brown, postscutellum reddish brown. Abdomen dark reddish brown, the segments sparsely haired posteriorly. Pleurae and genitalia dark brown. Wings hyaline, costa dark red, the third vein at the apex. Halteres a variable reddish and reddish brown. Coxae dark brown; femora and tibiae light reddish brown, tarsi darker; claws long, slender, evenly curved, the pulvilli three-fourths the length of the claws. Genitalia; basal clasp segment long, stout; terminal clasp segment stout, swollen near the distal fourth; dorsal plate short, broad, broadly and triangularly emarginate; ventral plate long, broad, roundly and slightly emarginate, the lobes short, narrowly rounded. Type Cecid. a1758. Trishormomyia modesia Felt 1913 Felt, E.P. Psyche, 20:145 (Hormomyia) This species was taken at Auburndale, Mass., May 22d by Prof. C. W. Johnson of Boston, and at New Haven, Conn., June 30, 1905 by B. H. Walden. Female. Length 4 mm. Antennae sparsely haired, fuscous yel- lowish; fourteen segments, the fifth cylindric, with a length two and one-half times its diameter; there are low circumfila near the basal third, the middle and apically; terminal segment slightly produced, with a distinct knob. Palpi; first segment short, second with a length three times its diameter, the third a little longer, tapering. Mesonotum smooth, reddish brown, the yellowish, submedian lines narrow. Scutellum pale yellowish, postscutellum yellowish, dark brown basally. Abdomen a nearly uniform shining dark brown; venter concolorous; ovipositor pale orange. Wings hyaline; halteres yellowish basally, fuscous apically. Coxae, femora and tibiae mostly a light fuscous yellowish, tarsi fuscous yellowish or dark brown; claws stout, evenly curved, the pulvilli about one-third the length of the claws. Ovipositor short, the lobes broad, tapering, broadly rounded. Type Cecid. 1346. "i 230 NEW YORK STATE MUSEUM Trishormomyia clarkei Felt 1908 Felt, E.P. N. Y. State Mus. Bul, 124, p. 388 (Hormomyia) 1915 ———— N.Y. State Mus. Bul. 175, pl. 4, fig 7 (Hormomyia) 1918 ————— N.Y. State Mus. Bul. 200, p. 133 (Hormomyia) The female was reared April 7, 1908 from a terminal bud gall on Spiraea salicifolia collected by Cora H. Clarke, at Mag- nolia, Mass., October 14, 1907. The larvae at the latter time were in yellowish, oval cocoons about 2.5 by 1.5 mm in diameter. The deep orange, stout larvae, about 5 mm long desert the galls in the fall, hibernate in the soil, the adults appearing in the spring and presumably oviposit in the opening buds. Apparently the same gall was collected at Lake Placid, N. Y. Gall. The larvae occur in nearly globular terminal bud galls about 4 mm in diameter and with a nearly normal green color, except that the tips of the rather closely adherent bud scales are tinged with dark red. Female. Length 3.5 mm. Antennae extending to the third abdominal segment, sparsely haired, dark reddish brown, fuscous basally; fourteen subsessile, cylindric segments, the fifth with a length about two and one-half times its diameter; the loops of the circumfila, anastomosing irregularly, have a length about equal to the distance separating their bases. Palpi; the first segment sub- quadrate, with a length twice its diameter, the second long, with a length three times its diameter. Face fuscous. Mesonotum shining dark brown, the submedian lines sparsely haired. Scutellum and postscutellum reddish brown. Abdomen dark reddish, nearly smooth, the pleurae a variable dark brown and reddish. Ovipositor reddish orange, the venter dark reddish, the basal segment a variable fuscous. Wings hyaline, costa yellowish brown, the third vein at the apex. Halteres yellowish basally, reddish apically. _Coxae reddish brown; femora, tibiae and tarsi a variable fuscous yellowish; claws long, stout, strongly curved; pulvilli longer than the claws. Ovipositor short, the terminal lobes with a length three times their width, roundly truncate. Type Cecid. a1759a. Trishormomyia verruca Walsh 1864 Walsh, B.D. Ent. Soc. Phil. Proc., 3:606 (Cecidomyia) 1867 ————— Ent. Soc. Phil. Proc., 6:226 (Cecidomyia) 1906 Felt, E.P. Insects Affecting Park & Woodland Trees, N. Y. State Mus. Mem. 8, 2:745 (Cecidomyia) 1910 Stebbins, F. A. Springfield Mus. Nat. Hist. Bul. 2, p. 10 (Cecidomyia) 1915 Felt, E.P. N. Y. State Mus. Bul. 175, pl. 4, fig. 14 (Hormomyia) 1918 ————— N.Y. State Mus. Bul. 200, p. 33 (Hormomyia) A single female was reared from this gail May 8, 1908 from mate- rial taken by Cora H. Clarke at Magnolia, Mass., the preceding fall. REPORT OF THE STATE ENTOMOLOGIST 1918 231 The larvae appear to desert the gall in the fall, the adults issuing the following spring and presumably ovipositing upon the develop- ing leaves. This gall has been recorded by Walsh as rather abundant, though local, on the leaves of Salix humilis near Rock Island, Ill. A smaller gall, apparently the same, was also found by Walsh on the foiage of S. discolor. ; Gall. The gall (pl. 12, fig. 1) is a very characteristic subconic enlargement arising in clusters from the midrib or some of the prin- cipal veins of the leaf. The gall is about 2 mm in diameter, greenish yellow, monothalamous, subglobular and tapering to a truncate, frequently lipped, free extremity. The presence of the gall on the upper surface of the leaf is indicated by a small point or nipple. Larva. Length 1.5 mm, orange colored, the breastbone small and indistinct. Female. Length 2.5 mm. Antennae extending to the second abdominal segment, sparsely haired, pale yellowish orange; fourteen segments, the fifth subsessile, a very short stem, the basal enlarge- ment cylindric, with a length over twice its diameter; low circumfila occur near the basal third and subapically; terminal segment slightly reduced, tapering, broadly rounded. Palpi; the first segment with a length more than twice its diameter, rectangular, the second broadly oval, with a length one-half greater than its diameter. Mesonotum dark brown, the submedian lines thickly haired. Scu- tellum reddish brown, postscutellum reddish. Abdomen dark red, sparsely haired; ovipositor fuscous yellowish. Wings hyaline, rather narrow; costa dark brown, the third vein just before the apex. Halteres fuscous yellowish, fuscous subapically. Coxae, femora and tibiae fuscous yellowish, the tarsi darker, almost black; claws rather short, stout, strongly curved, the pulvilli distinctly longer than the claws. Ovipositor about one-third the length of the abdomen, rather stout, the terminal lobes long, stout, narrowly and irregularly oval. Type Cecid. a1785. ODONTODIPLOsIS Felt 1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 404 1910 Rubsaamen, E.H. Zeitsch. Wissenschaft. Insektenbiol., 15: 287 1911 Felt, E.P. N. Y. Ent. Soc. Jour., 19:61 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 203 This genus is erected for the separation of certain species allied to Cecidomyia, which may be distinguished therefrom by the triarticu- late palpi and the conspicuous serrations on the somewhat conical ventral plate or harpes. Type Cecidomyia karner- ensis Felt. Key to Species a Fifth antennal segment having the basal portion of the stem with a length about one-half greater than its diameter b Length .75 mm; abdomen reddish yellow......-.-- sos sig lele dhiofelee sldiews karnerensis Felt, C. 27 232 NEW YORK STATE MUSEUM aa Fifth antennal segment having the basal portion of the stem with a length two and one-half or three times that of the diameter bob Abdomen paleiorangen ci sail ctv. fle americana Kelt, C. 451, 660 bb Abdomen fuscous yellowish................. montana Felt, C. 718 Odontodiplosis karnerensis Felt 1907, elt, EP. N.Y. State: Must Bul 10, \p) 41; separate. sud > (Cecidomyia) 1908 ————— N. Y. State Mus. Bul. 124, p. 404 This dark-brown male was taken May 16, 1906 at Karner, N. Y. Male. Length .75 mm. Antennae one-half longer than the body, thickly clothed with fine hairs, light brown; fourteen segments, the fifth (fig. 51a) with stems one and one-half and two and one-half times their diameters, respectively. Palpi (fig. 516), the first seg- ment short, the second narrowly oval, the third one-half longer than the second. Mesonotum dark brown with a silvery luster. Fig. 51 Odontodiplosis karnerensis: a, fifth antennal segment of male the setae not sketched in; 6, palpus of male; c, side view of apex of the distal tarsal segment and claws (enlarged, original) Scutellum reddish, postscutellum dark brown. Abdomen reddish yellow, sparsely ornamented with rather coarse hairs. Wings (pl. 16, fig. 1) hyaline, costa reddish brown; halteres whitish trans- parent. Legs semitransparent, yellowish brown, tarsi variably reddish, light or dark brown; claws (fig. 51c) slender, strongly curved, simple. Genitalia; basal clasp segment long, slender, a basal lobe thickly clothed with stout, rather long setae; terminal clasp segment abruptly swollen at base, slender; dorsal plate broad, very deeply emarginate, the lobes well separated, broadly triangular, the apex broadly rounded; ventral plate narrow, tapering, broadly rounded. Harpes presumably broad, slightly excavated internally, the broadly rounded posterior margin with a series of large triangular chitinous teeth; style long, slightly curved at the distal fourth, broadly rounded. Type Cecid. 27. REPORT OF THE STATE ENTOMOLOGIST 1918 233 Odontodiplosis americana Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 404 This pale yellowish male was taken July 3, 1906 on alder, Alnus viridus, and the 24th on low blackberry, Rubus villosus, at Albany, N. Y. The female, provisionally associated with this species, was taken on the same date. Male. Length 1 mm. Antennae one-fourth longer than the body, thickly haired, pale straw; fourteen segments, the fifth with stems each three times their diameter; terminal segment, distal node stout, subcylindric, with a length about four times its diameter and at the distal fourth tapering to a narrowly rounded apex. Palpi; the first segment short, stout, irregularly ovoid, the second rather stout, with a length over three times its diameter, the third a little ' longer and more slender than the second; face yellowish, eyes dark reddish. Mesonotum fuscous yellowish. Scutellum pale yellowish, postscutellum dark brown. Abdomen pale yellowish, dark brown basally and apically. Wings hyaline, costa pale straw; halteres yellowish transparent. Legs a nearly uniform pale straw; tarsi slightly lighter, the terminal segments darker; claws long, slender, strongly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment long, slender, a. rudimentary lobe at the basal third; terminal clasp segment long, slender; dorsal plate short, broad, broadly and triangularly emarginate, the lobes diverging, broadly rounded; ventral plate short, broad, broadly rounded. Harpes convolute, rather short, approximate, the margin dentate; style long, slender, narrowly rounded. Type Cecid. 451. Female. Length .75 mm. Antennae about as long as the body, sparsely haired, light brown; probably fourteen segments, the fifth with a stem fully as long as the cylindric basal enlargement, which latter has a length over twice its diameter, and is slightly constricted near the basal third; terminal segments cylindric, with a length four times their diameter, obtusely rounded apically; mouth parts slightly produced. Palpi; first segment irregularly subquadrate, the second narrowly oval, with a length three times its diameter, the third one-half longer than the second, more slender. Mesonotum dark brown, submedian lines sparsely setose; scutellum pale orange; postscutellum fuscous orange. Abdomen yellowish orange with indistinct fuscous markings laterally. Wing membrane rather thickly clothed with narrow, hairlike scales; costa dark brown; halteres pale yellowish basally, whitish transparent apically. Legs fuscous yellowish. Ovipositor short, the lobes with a length six times the width. Odontodiplosis montana Felt 1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 404 This fuscous yellowish male was taken July 27, 1906 on hemlock, Tsuga canadensis, at Newport, N. Y. 234 NEW YORK STATE MUSEUM Male. Length .65 mm. Antennae a little longer than the body, very thickly haired, light brown; fourteen segments, the fifth with stems each three times their diameter; terminal segment, distal enlarge- ment subcylindric, with a length about three times its diameter and tapering strongly at the distal fourth to a narrowly rounded apex. Palpi; the first segment short, stout, irregularly subquadrate, the second narrowly oval, with a length nearly three times its diameter, the third one-half longer and more slender than the second. Meso- notum fuscous yellowish. Scutellum dull yellowish, postscutellum and abdomen fuscous yellowish, the latter sparsely haired. Wings hyaline, costa yellowish brown; halteres semitransparent basally, slightly fuscous apically. Legs mostly a pale straw yellow, the tarsi brown, the distal segments darker; claws long, slender, strongly curved, the pulvilli nearly as long as the claws. Genitalia; basal clasp segment long, slender, an inconspicuous lobe at the basal third; terminal clasp segment long; dorsal plate short, broad, deeply and narrowly incised, the lobes narrowly rounded; ventral plate long, broad, broadly rounded. Harpes expanded, convolute and with long, closely-set teeth on the posterior margin; style indistinct. This specimen appears abnormal in that one basal clasp segment apparently bears two terminal clasp segments, the apical portion of the second being closely fused with the proximal third of the basal clasp segment. Possibly it is a malformed style. Type Cecid. 718. ADIPLOsIS Felt 1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 405 1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:287 1911 Felt, E.P. N. Y. Ent. Soc. Jour., 19:61—62 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 203 The genus is easily distinguished from Odontodiplosis Felt, to which it is closely related, by the stouter basal clasp segment without a basal lobe and the total absence of teeth on the ventral plates or harpes. Type and sole species, Cecidomyia toxicodendri Felt, ©. 263" Adiplosis toxicodendri Felt 1907 Felt, E. P. N. Y. State Mus. Bul. 110, p. 137; separate, p. 40-41 (Cecidomyia) LGGS UN eotate Mus: Bul. n24. 405 The fuscous brown midge was taken June 14, 1906 on poison ivy, Rhus toxicodendron, at Nassau, N. Y. Male. Length .75 mm. Antennae about one-half longer than the body, thickly haired, light brown; fourteen segments, the fifth (fig. 52a) with stems each three times their diameter; terminal seg- ment, distal enlargement somewhat produced, subcylindric, slightly swollen distally and with a fusiform terminal appendage nearly as REPORT OF THE STATE ENTOMOLOGIST 1918 235 long as the enlargement. Palpi (fig. 52b) consisting ofsbut three segments, the first short, subquadrate, the second twice the length Fig. 52 Adiplosis toxicodendri: a, fifth antennal segment of male; 3, palpus; c, distal tarsal segment (enlarged, original) of the preceding, rounded at each extremity, the third a little shorter than the second, more slender; face fuscous yellowish, eyes large, black. Mesonotum reddish brown, submedian lines pale yellowish, sparsely ornamented with fine setae. Scutellum and pleurae fuscous yellow, postscutellum yellowish. Abdomen a nearly uniform fuscous brown, rather thickly clothed with fine setae. Wings (pl. 16, fig. 2) hyaline, costa reddish brown; halteres yellowish transparent. Coxae and femora pale yellowish, tibiae and tarsi pale brown, tarsi slightly darker; claws (fig. 52c) rather slender, strongly curved, simple. Genitalia; basal clasp segment stout, obliquely truncate; terminal clasp segment slender, swollen at the base; dorsal plate broad, deeply incised, the lobes well separated, narrowly rounded; ventral plate broad, broadly rounded; style stout, tapering, narrowly rounded. Type Cecid. 263. MONARTHROPALPUS Rubs. 1892 Rubsaamen, E. H. Berln. Ent. Zeitschr., 37:329, 381 1896 Kieffer, J. J. Wien. Ent. Zeit., 15:92, 94 1897 ————— Syn. Cecid. de Eur. & Alg., p. 30 1910 Rubsaamen, E.H. Zeitsch. Wissenschaft. Insektenbiol., 15:284 1911 Felt, E.P. N.Y. Ent. Soc. Jour., 19:58 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 149 This peculiar Diplosid is easily distinguished by the uniarticulate palpi and the normal mesonotum. The male binodose antennal segments have three circumfila, the claws are simple and the third vein unites with the margin near the apex of the wing. The female has the ovipositor terminating in a long, stout, chitinous spine with a length equal to about one-half the diameter of the abdomen. The reduction of the palpi, the approximation to equality in the develop- 236 NEW YORK STATE MUSEUM ment of the circumfila in the sexes and the simple claws indicate an affinity with Hormomyia. Type and sole species, M.buxi Lab. Monarthropalpus buxi Lab. Box Leaf Midge 1873 Laboulbene, Alexandre. Soc. Ent. Fr. Ann., ser. 5, 3:32 Tab. 9 1913 Chaine, J. Sci. Nat., Zool., Ann. (Paris), IX ser., 17:269 —359 1913 — C. R. Hebdom. Soc. de Biol., 74: 156-58 1913. Felt, E. P. Tree Talk, v. 1, no.2, p. 18 1915 — N. Y. State Mus. Bul. 180, p. 42 -46 1918 ———— N. Y. State Mus. Bul. 200, p. 158 This rather large, yellowish orange midge was found by Prof. A. E. Stene in May 1g10 infesting a box hedge, Buxus sem- Fig. 53 Monarthropal- pus buxi, box leaves show- ing galls (author’s illustra- tion) pervirens, at Newport, R I. Galls received May 25th pro- duced an abundance of midges. It occurs in a number of localities REPORT OF THE STATE ENTOMOLOGIST 1918 237 on Long Island and has been reported from the Pacific coast. The midges complete their transformations in the galls and at the time of emerging, leave the whitish exuviae protruding. They are there- fore easily transported with infested plants. Gall. A more or less irregular, oval swelling of the leaf (fig. 53) with an eccentric, oval, clear space excavated by the yellowish larva. There may be very slight elevation of the leaf with an irregular, yellowish or brownish discoloration, the margin of the enlargement being indicated by a darker green. The gall is most easily seen by transmitted light. An infested leaf may contain only one or two of the maggots or there may be half a dozen with a nearly complete destruction of the vital parts of the leaf. Male. Length 2 mm. Antennae nearly as long as the body, sparsely haired, reddish; fourteen segments, the fifth (fig. 54a) with a b Fig. 54 Monarthropalpus buxi: a, fifth antennal segment of male, setae not sketched in; 6, same of female (enlarged, original) stems two and three times their diameters, respectively; three circumfila, the loops rather stout, short and approaching those of Hormomyia. Palpi (fig. 55); one long segment somewhat expanded distally, sparsely setose. Mesono- tum, scutellum and _ postscutel- lum a variable yellowish orange, the submedian lines sparsely haired. Abdomen sparsely haired, a variable orange, the basal seg- ments lighter, the distal bright orange; genitalia fuscous yellowish. Wings hyaline, costa dark brown, the third vein uniting therewith ‘ : at the apex. Halteres orange basally, fuscous yellowish distally. Legs a nearly uniform yellowish orange; claws tapering, simple, the Fig. 55 Monarthropalpus buxi, palpus of male (enlarged, original) 238 NEW YORK STATE MUSEUM pulvilli rudimentary. Genitalia; basal clasp segment stout; term- inal clasp segment short, stout; dorsal plate broad, broadly and triangularly emarginate, the lobes broadly rounded; ventral plate long, broadly and roundly emarginate, the lobes tapering. Female. Length 2.5 mm. Antennae extending to the fourth abdominal segment, sparsely haired, reddish; fourteen segments, the fifth (fig. 54b) with a stem about one-half the length of the cylindric basal enlargement, which latter has a length three times its diameter Fig. 56 Monarthropalpus buxi, side view of apex of the abdomen and ovipositor (enlarged, original) and rather high circumfila at the basal third and apically; terminal segment with a length about twice its diameter, irregularly obtuse. Body a nearly uniform reddish orange, the abdomen sparsely haired. Ovipositor (fig. 56) short, broadly rounded and with a curved chitinous spine having a length about one-half the diameter of the abdomen. Other characters about as in the male. Cecid. a2035. oNopIPLosis Felt 1916 Felt, E. P. N. Y. Ent. Soc. Jour., 24:175 This genus with its greatly reduced palpi, the somewhat produced mesonotum and the modified ovipositor is allied to the series referable to Hormomyia and its near associates and particularly to Monar- thropalpus Rubs. The typeisO. sarcobati Felt. Onodiplosis sarcobati Felt 1916 Felt, E. P. N. Y. Ent. Soc. Jour., 24:176 (female) 1918 ————— Econ. Ent. Jour., 11:384 (male) 19rd) | —— IN. Ye State Mus: Bulli200})p.) 126 This remarkable female was reared from a bud gall onSarco- batus vermiculatus collected on the shore of Utah lake. REPORT OF THE STATE ENTOMOLOGIST 1918 239 It produces an irregular fleshy oval deformation apparently composed of appressed thickened bud scales, with a length of to mm and a diameter of 6 mm. The gall hardens with age. The female is noteworthy because of the thick tuft of long, silky, yellowish white hairs at the base of the ovipositor. CYSTODIPLOsSIS Kieff. & Jorg. 1910 Kieffer, J. J. & Jorgensen, P. Centrbl. Bakt. Parsit. Insektk., 27: 395-396 1953, Kieffer, J. J. Gen. Insect., fasc. 152, p. 149 This Argentine genus is allied to Monarthropalpus Rubs. by the uniarticulate palpi, though it is easily distinguished by there being but thirteen antennal segments in the female, the third and fourth being fused. The basal and distal nodes of the flagellate antennal segments of the male are globose and ovoid respectively, the dorsal and ventral plates are bilobed and the ovipositor is stout, chitinous and needlelike. Type C. longipennis Kieff. & Jorg. Cystodiplosis eugeniae Felt 1913 Felt, E.P. Ent. News, 24:175-76 iio INC Y state Mus) Bul; 200, p. 173 The midge provisionally referred to this genus was reared in April 1912, from hairy, irregularly clustered leaf galls on Eugenia buxifolia collected by DrE.A.Schwarz at Key West. The galls are irregularly spherical or somewhat elongate, monothalamous, with a diameter of about 1.5 mm, moderately thick walls and are clothed externally with long, crinkly, yellowish or reddish brown hairs. The transformations occur within the galls. ASTRODIPLOSIS Felt 1913 Felt, E.P. N.Y. Ent. Soc. Jour., 21:218 This genus is easily separated from all other American trifili having uniarticulate palpi by the distinctly black and yellow-marked wings. The circumfila are well developed, the mesonotum is normal, the pulvilli rudimentary and the genitalia peculiar. The type isfAy speciosa Felt. Astrodiplosis speciosa Felt 1913 Felt, E.P. N. Y. Ent. Soc. Jour., 21:218 113 ————= N. Y. State Mus. Bul. 200, p. 169, 170 The strikingly colored midge was reared from an irregular stem gall on an unknown vine provisionally referred to the genus Cissus 240 NEW YORK STATE MUSEUM by Doctor Britton of the New York Botanical Garden. The galls were collected at Puerto Barrios, Guatemala, March 20, 1913, and forwarded to us through the courtesy of Prof. E. Bethel of Denver, Col. The gall is an irregular, gouty stem swelling, composed of soft tissues with here and there irregularly oval cells with a diameter of approximately 2 mm. Entire swellings may have a length of 2 to 9 cm. EXPLANATION OF PLATES PLATE 1 241 European Corn Borer ! Pyrausta nubilalis Hubn. Ear of corn showing external injuries. Note the circular hole in the husks and near the base of the ear; the conspicuous moist borings indicate serious injury. 1 Permission to make the first reproduction of the four admirable colored plates, I-4, drawn from life by R. E. Snodgras was very kindly given by Dr L. O. Howard, Chief of the Federal Bureau of Entomology. 242 Ear of corn showing external injuries i * y : . i pepe mt myer ib i ‘ : uty cae y, a) 5 Ni / MI J 4 4 f ae ; ¥ ~~ ie J | A€ i a ar on ee } A ? b ¥ 2 ¢ 1 724. As i ea 8! (aed : 1 ; : . Vghiicer. sgt mi if { ‘oer “lek A ; Ye oe ith = European Corn Borer Py raws bay ha Lis) Eun: Borers at work in an ear. Note the small borers near the tip and partly concealed by the silk and the larger, more destructive one near the middle of the ear. 244 Borers at work in an ear eae 4 iia er a) ee kev ay He it i” Rie it) i oa A oa sir baeeney fe ra European Corn Borer Pyrawsitiam ubalatiis iiubm Broken tassel caused by the European corn borer. Note that the break is near the base of the tassel and occurs in the main part of the stalk. The small figure to the right shows two tassel buds which have been invaded by very young borers just after they have deserted the leaves. 246 European corn borer and portion of tassel showing work of young borers Broken tassel caused by : i ¥ r i rit y i ie ; j ' i i 4 f . ; i " . 4 ry . abe . : ie) ar i ‘Aya ; Die * i, rhe , f wr: ' * * i Bot | . i of - * j € vec. ° a] 1 ; Li 22 ‘ ‘ Be? ¥ ‘ f i ‘ 4. ae fay ; % pint inet pg pane, 2) cawepiiesy S. Sfole pod Demele European Corn Borer Pyrat sta nub lallists Ehubm: 1 Borings in stalk containing the brown pupae 2 Nearly full-grown borers working in the corn stalk; note the extruded borings. . 3. Pupa in stem somewhat enlarged. 4 Egg mass on theleaf. The eggs are usually found on the under- side of the lower leaves of young plants and frequently in areas where there is a second brood on the developing ear. 5 Female moth. (Note that the designation of the sexes on the plate has been inadvertently transposed. 6 Male moth. 248 Moths and work. 1. Borings in corn stalk showing pupa. 2. Caterpillars at work in corn stalk. 3. Pupainstem. 4. Eggs on leaf. 5. Male and 6 Female moth, European Corn Borer Piy ratus'ta nla billalais) THubn: Corn stalks badly infested by this borer. Note the riddled condi- tion of the main stalk, the badly damaged, partly developed ear and the injury to husks and leaf sheaths. (Reproduced by courtesy of the Massachusetts Department of Agriculture) 250 Work of European corn borer in corn peer 2h A bos AY , aa ti [: hw en A ye - _ ; ' va hp a Fada) © ve i. ; ul ° , ' =i A : ; 7 i ni : e ‘ ‘god mo) nesgows ay Beier bievaty4 ye too. jo (we Sry to of hale wd? E bre elontew td SUM Litas, uel 30, $f o> pinicive, Ie) tc ot VA tS AY , a Mert iyo mit Gl qs Pula Seow yy 7 3 oul ie: mall ha no %) iraiis Hite ‘hua Ficoges o eae er oe AAMAS) tns9d 2-7 ort Gap ae kg | Junilidas WG sisozntoncem ae 1G a “ae uh Pay A 7 European Corn Borer Pyrausta nubilalis Hubn. 1 One ear of corn badly damaged by caterpillars. Note the borings into the kernels and the damage to the stalk. There is also a portion of an ear from which a part of the corn has been removed showing injury to the cob itself. 2 Vial containing caterpillars taken from one hill of corn. As many as 311 have been found in one hill. (Reproduced by courtesy of the Massachusetts Department of Agriculture) 252 Plate 6 Work of European corn borer in corn a iy i fi) i : d Lerodd, 710 LP tetehory. Met t bo u oy Fee ' ae \ lam eh Ve ’ es Ae | fa Nase Shit i Le? | Nepal dd a oI - q uy toate European Corn Borer Py tianwsit ay mila aliartais: iigion: Clump of barnyard grass, Echinochloa crus-gallis infested by borers. Note the two caterpillars in the slit portions of the stem. The ability of this insect to maintain itself on various weeds, a habit now limited to eastern Massachusetts, greatly complicates the problem. 254 Plate 7 Work of European corn borer in barnyard grass Hickory Tube Gall Hickory tube gall, Caryomyia tubicola O.S%., and also a few of the woolly globular galls, probably those of Caryomyia thompsoni Felt. 256 Plate 8 Hickory tube gall ihe . ny ; has lal ral Wy etry ey oy Tig + , TEA ape ny tee ae A Sy raya) fh iT Unknown Hickory Gall A cluster of leaves showing oval dark greenish or blackish blisters sometimes very abundant and produced probably by a species of Caryomyia. 258 Unknown hickory gall Rios an Ard iy en a ye ‘Bs v , Lis Ai ' : ¥) ‘ el nt LA Lp ‘ q ae i: . 7 ? oy ; i y cnt * = ee, | i Aint Need: aroalaiti i ‘ nr 4 Sri as ee ae i | (tg ceayereny sLal ; ag |, sit i eT is | 5 yy, "aa « ; ‘ é hig t a YY - ijfae st ' nets se eee } 1 aia ' ATU (cict - ' b 7 . tip i ‘ato ve 2 ee ito / ‘ dy a my jeri TiHisth we . \ a (a : Bs ¥t i ee Ce % L my i” 4 a he . . i ay Me pay A hid nee? It os ee 4 a tied ‘= - oo. Hist hAteuthi ‘ov ae ay, ° ie asia 3% Fe Peanimon?d £2 eA a hock ae’ TOsnof* BRIrvate vy ' fs i : ; Wy wa a, a ‘ va : Nees ' i Tia Pas: J: —. os, A ‘ ‘ 1 r Ty Bae BL! sf ; 4 7 Mi a : / by : ] bo Hickory Leaf Galls Caryomyia antennata Felt, numerous galls (after Thompson) Caryomyia caryaecola ©. S., a senes of ‘galls (author’s illustration) : Caryomyia ‘“caryaecola,” another type (after Stebbins) Caryomyia holotricha O.S.,a series of galls (after Thompson) Caryomyiva species,,ypossibly (Ci (caryac 0.05: (author’s illustration) Caryomyia species, adult unknown (author’s illustra- tion) Caryomyia caryae O. S., a series of galls (author’s illustration) Caryomyia thompsoni Felt (after Thompson) Caryomyia consobrina Felt (after Clarke) 260 Plate to Hickory leaf galls Midge Galls on Helianthus rt Trishormomyia bulla Walsh, galls on Helianthus 2 Trishormomyia helianthi Brodie, galls on Helianthus 262 snyyueroy uo sT[es asprpy Il 9}¥[q ' PLATE xg 263 Midge Galls on Willow and Thorn 1 Trishormomyia verruca O.64.,, galls on willow leaves 2 Gall on crataegus leaf, from which was reared Lestodip- losis crataegifolia Felt, probably a predator and not the producer of the gall 264 Plate 12 Tm OW and tho dge galls on willc i it N PLATE 13 265 Midge Galls on Oak and Eupatorium 1 Itonida foliora Rssl. and Hkr., marginal leaf rolls on oak leaf 2 Enlarged flower heads of Eupatorium from which was reared Lestodiplosis eupatorii Felt, probably a predator and not the producer of the gall 266 uuniioyedne pue v0 UO ses aspryy £1 94e[q PLATE 14 267 to Gall Midge Wings Wing of Dyodiplosis davisi Felt, male, C. 383, x 20 Wing of Hormomyia atlantica Felt, female, C. 815, xan Wing of Hormomyia johnsoni Felt, male, C. 821, x 13 Wing of Hormomyia americana Felt, male, C. 91, 6) HE) 268 Plate 14 Gall midge wings mK : Oa hea to Gall Midge Wings Wing of Trishormomyia dilatata Felt, male, C. 407, XK 20 Wing of Obolodiplosis robiniae Hald., male, C. 180, X 20 Wingoi Parallelodiplosis rubrascuta Felt, male, Cro8, x 20 Wing of Caryomyia'tubicola O.5., male, ar4so, x 20 Wing of Parallelodipilosis acernea Felt; male ©: 2072S Wing of Parallelodiplosis caryae Felt, male ©: 230s 20 Wingot Parallelodiplosis carpini Felt) © 216) 20 Wing of Itonida albotarsa Felt, male, C. 330, x 20 270 zc e wings Gall mide Seen UL r aamtW sgbit F : PRs pu ; wf 5 ry i 271 i togee slavyer ev inne Lt ‘ on 2 ENP. WS 2 pea Re & 4 ¥; 4 tet ved ne Hit ay 4 ¥, = r < = Re f ‘I ie “Uae i num Oo won Io Wal I2 Gall Midge Wings Wing of Odontodiplosis karnerensis Felt, male, C. 27; x 20 Wing of Adiplosis toxicodendri Felt, male,C. 263, X 20 : Wing of Epidiplosis sayi Felt, male, C. 429, x 20 Wing of Giardomyia photophila Felt, male, C. 313, X 20 Wing of Itonida tecomae Felt, male, a1260, x 20 Wing of Lestodiplosis asteris Felt, male, C. 615, X 20 Wing of Arthrocnodax sp., male, C. 473, x 20 Wing of Lestodiplosis rugosa Felt, male, C.650c, x 20 Wing of Arthrocnodax cincta Felt, male, C. 285, x 20 Wing of Arthrocnodax fraxini Felt, male, C. 170, X 20 Wing of Itonida explicata Felt, male, C. 515, x 20 Wing of Itonida hudsoni Felt, male, C. 1, x 20 272 Plate 16 Gall midge wings PLATE 17 273 Gall Midge Genitalia t Genitalia of Parallelodiplosis caryae Felt, C. 331, xX 260 2 Genitalia of Obolodiplosis robiniae Hald., C. 180, X 260 274 alia c e genit Gall mide 18 Gall Midge Genitalia 1 Genitalia of Hormomyia needhami Felt, C. 788, x 90 2 Genitaliaof Dyodiplosis davisi Felt, C. 383, x 260 3 (Genitalia of Drishormontwyia dilatata, Keltvee4o7 Xx 260 276 Plate 18 Gall midge genitalia ae ee a? hee 1 as ne eli tre u of ry re ee tS oul ff . I Om PW HD A Gall Midge Genitalia Genitalia of Itonida explicata Felt, C. 515, x 260 Genitalia of Itonida albotarsa Felt, C. 330, x 260 Genitalia of Itonida hudsoni Felt, C. 1, x 260 Genitalia of _ Itonida excavationis Felt, C. 65, x 260 Genitalia of Itonida infirma Felt, C. 299, x 260 Genitalia of Epidiplosis sayi Felt, C. 429, x 260 Genitalia of Giardomyia photophila Felt, C. 323) X 260 278 Plate 19 Gall midge genitalia Ww nd NON Gall Midge Genitalia Genitalia of Giardomyia montana Felt, C. 325, x 260 Genitalia of Lestodiplosis asteris Felt, C. 615, x 260 Genitalia of Parallelodiplosis rubrascuta Felt, €293,5x 260 Genitalia of Lestodiplosis cincta Felt, C. 465, x 260 Genitalia of Ltonida apicalis’ Felt) CC 409; x 260 Genttalia,of Ltonida ilavoscuta Kelt, i©76, 200 Genitalia of Parallelodiplosis subtruncata Felt, C. 506, x 260 Genitalia of Paradiplosis obesa Felt, C. 167, x 260 280 Plate 20 Gall midge genitalia r 7 7 eee . e Petia Ph icigde! Sic e = INDEX abdominalis, Arthrocnodax, 83, 85 Itonida, 207 Acarina, additions to collections, 79 acerina, Arthrocnodax, 83, 86 acernea, Parallelodiplosis, 163, 167 Adiplosis, 234-35 toxicodendri, 234 agraria, Itonida, 178, 186 Agrotis ypsilon, 63 ainsliei, Pyrausta, 32 albitarsis, Retinodiplosis, 72, 156, 162 albostriella, Alebra, 68 albotarsa, Itonida, 181, 205 Alebra albostriella, 68 alexanderi, Hormomyia, 213, 220 Alfalfa gall midge, 70 Allomyia, 71 juniperina, 71 americana, Hormomyia, 212, 213 Hyperdiplosis, 123, 125 Itonida, 177, 182 Odontodiplosis, 232, 233 antennata, Caryomyia, 95, 97, 100 Itonida, 180, 197 anthici, Itonida, 181, 203 aphidivora, Itonida, 178, 188 apicalis, Itonida, 178, 185 apiphila, Arthrocnodax, 82, 87-80 apocyni, Itonida, 179, 180 apocyniflorae, Lestodiplosis, 131, 142 Apple and thorn skeletonizer, 7, 55- 56, 70,°71, 72 Apple maggot, 8, 71 Apple tent caterpillar, 7 Apple worm, red-humped, 7, 54-55, 72 yellow-mecked, 7,'54-55, 72 aprilis, Itonida, 178, 188 arcuaria, Caryomyia, 95, 104 Arsenate of lead, 55, 57, 59, 65, 66, 71 Arthrocnodax, 81 abdominalis, 83, 85 acerina, 83, 86 apiphila, 82, 87-89 carolina, 82, 90 cincta, 82, 90 Arthrocnodax — (continued) constricta, 82 fenestra, 82, 86 filicis, 82, 84 fraxini, 83, 85 incisa, 83 macrofila, 82, 89 meridionalis, 83, 85 obscura, 83, 87 occidentalis, 82, 92 rhoina, 82, 90 rufa, 82, 84 sambucifolia, 83, 91 sylvestris, 82, 84 asclepiae, Lestodiplosis, 132, 133, 143 Asphondylia dondiae, 71 websteri, 70 asteris, Lestodiplosis, 132, 147 Astrodiplosis, 239 speciosa, 239 atlantica, Hormomyia, 213, 217-19 Aulacaspis pentagona, 68 aurantiaca, Cecidomyia, 39 Diplosis, 39 banksiella, Gnorimoschema, 67 barbicornis, Magdalis, 57 basalis, Lestodiplosis, 131, 137 Black flea-beetle, 59 Black vine weevil, 67 Bladder maple gall, 68-66 Bordeaux mixture, 59 Box midge, 72, 236 bryanti, Hyperdiplosis, 123, 125 bulla, Trishormomyia, 221, 222, 227 Bumble flower beétle, 65 buxi, Monarthropalpus, 72, 236-38 Byturus, raspberry, 57 unicolor, 57 calidum, Calosoma, 66 Calosoma, European, 65 Calosoma calidum, 66 scrutator, 662729473: sycophanta, 65 NEW YORK canadensis, Itonida, 178, 182 Trishormomyia, 222, 228 carolina, Arthrocnodax, 82, 90 carolinae, Lestodiplosis, 132, 145 carpini, Parallelodiplosis, 1605, 174 Carpocapsa pomonella, 17-26 caryae, Caryomyia, 95, 97-100 Parallelodiplosis, 163, 168-70 caryaecola, Caryomyia, 97, I14 Caryomyia, 94 Sp., 97; 117 antennata, 95, 97, 100 arcuaria, 95, 104 caryae, 95, 97-100 caryaecola, 97, 114 consobrina, 95, 97. 103-4 cynipsea, 97, 115 glutinosa, 97, 115-17 holotricha, 95, 97, I0I-2 inanis, 97, III-13 nucicola, 97, I17 persicoides, 97, I13-14 sanguinolenta, 96, 97, 105-6 similis, 96, 97, IIO-II thompsoni, 96, 97, 106-8 tubicola, 96, 97, 108-10 catalpae, Itonida, 180, 194-95 cattleyae, Parallelodiplosis, 164, 172 caudata, Hormomyia, 213, 219 Cecidomyia, 175 aurantiaca, 39 mosellana, 38, 39 tritici, 36, 38, 39 cerasi, Lestodiplosis, 130, 133 Chloridea obsoleta, 64 Chrysanthemum midge, 72 cincta, Arthrocnodax, 82, 90 Hormomyia, 212, 216 Itonida, 207 Lestodiplosis, 130, 135 cinctipes, Parallelodiplosis, 164, 172 clarkeae, Parallelodiplosis, 164, 175 clarkei, Trishormomyia, 222, 230 claytoniae, Itonida, 180, 201 clematiflorae, Lestodiplosis, 132, 145 Coal ashes, 50 cockerelli, Thecodiplosis, 71 Codling moth, 8, 17-26, 71 coffeae, Hyperdiplosis, 123, 124 Coleoptera, additions to collections, 74 STATE MUSEUM Collections, 14-16; additions to, 73- 80 coloradensis, Hormomyia, 213, 210 concinna, Schizura, 54 Conotrachelus crataegi, 56 consobrina, Caryomyia, 95, 97, 103-4 Trishormomyia, 221, 223 constricta, Arthrocnodax, 82 Contarinia tritici, 36, 390 Coprodiplosis, 128 Corn borer, lined, 10, 61, 63-64 See also European corn borer Corn ear worm, 62, 64-65 Corn insects, 60-65 corticis, Parallelodiplosis, 164, 173 coryli, Parallelodiplosis, 163, 170 Crambus luteolellus, 62-63 trisectus, 62 vulgivagellus, 62, 63 Crane flies, additions to collections, &o crataegi, Conotrachelus, 56 crataegifolia, Lestodiplosis, 130, 134-35 Trishormomyia, 221, 222, 224-26 cucumeris, Epitrix, 59 cucurbitae, Itonida, 180, 194 Cut worm, bronze-colored, 10, 63 greasy, 10, 63 cynipsea, Caryomyia, 97, II5 Cystodiplosis, 239 eugeniae, 230 Dahlias, injurious insects, 64 Datana ministra, 54 davisi, Dyodiplosis, 208 Diarthronomyia hypogea, 72 dilatata, Trishormomyia, 221, 226 Diplosis aurantiaca, 39 Diptera, additions to collections, 75-70 dondiae, Asphondylia, 71 Dyodiplosis, 208-9 davisi, 208 Egg plants, injurious insects, 60 Elaphidion villosum, 66 emarginata, Giardomyia, 118, 120-21 Itonida, 178, 184 Epidemics, prevention, 12 Epididiplosis, 127 sayi, 127 INDEX TO REPORT OF THE STATE ENTOMOLOGIST 1918 Epitrix cucumeris, 59 eugeniae, Cystodiplosis, 239 eupatorii, Hyperdiplosis, 123, 125 Lestodiplosis, 132, 146 Euphoria inda, 65 European calosoma, 65 European corn borer, 10, 26-35, 61, 62 excavationis, Itonida, 181, 202 I-xorista pyste, 56 explicata, Itonida, 179, 187 extensa, Parallelodiplosis, 164, 173 Fall webworm, 7, 72 Feltiella venatoria, 70 fenestra, Arthrocnodax, 82, & Trishormomyia, 221, 223 Field crops, 10 filicis, Arthrocnodax, 82, 84 fitchi, Promachus, 58 fitchii, Prodiplosis, 36, 93 flavomarginata, Lestodiplosis, 13), 138 flavoscuta, Itonida, 180, 197 Flea-beetles, black, 10 Flies, necessity of controlling, 11 Flies and heat, 71 floricola, Prodiplosis, 92-93 florida, Lestodiplosis, 132, 144 Parallelodiplosis, 163, 165 foliora, Itonida, 180, 198-201 Forest tree pests, II fractilinea, Hadena, 63 fragariae, Itonida, 178, 184 fraxini, Arthrocnodax, 83, 85 fraxinifolia, Lestodiplosis, 130, 136 Fruit insects, 7, 54-58 fungicola, Hyperdiplosis, 123, 124 fusca, Phyllophaga, 58 Gall insects, 13, 71 Gall midges, 70, 71, 81-240 Garden insects, 58-60 Giardomyia, 118 emarginata, 118, 120-21 hudsonica, 118, 121 menthae, 118 montana, 118, 122 noveboracensis, 118, 119 photophila, 118, 119-20 globosa, Lestodiplosis, 132, 142 glutinosa, Caryomyia, 97, 115-17 Gnorimoschema banksiella, 67 283 Grain pests, 9 Grass insects, 9, 60-65 Grass webworms, 10, 61, 62-63 grassator, Lestodiplosis, 131, 138-39 Greasy cutworm, 10 Ground beetle, fiery, 66 133, Hadena fractilinea, 63 Hartman, Fanny T., work, I5 hartmaniae, Itonida, 181, 201 helianthi, Trishormomyia, 222, 227 Hemerocampa leucostigma, 70 entomological Hemerophila pariana, 55, 70, 71, 72 Hemiptera, additions to collections, 78-79 Hickory tussock moth, 7, 11 hicoriae, Lestodiplosis, 131, 141 holotricha, Caryomyia, 95, 97, 101-3 Hormomyia, 209-20 alexanderi, 213, 220 americana, 212, 213 atlantica, 213, 217-19 caudata, 213, 219 cincta, 212, 216 coloradensis, 213, 219 maxima, 213, 216 montana, 213, 217 needhami, 212, 215 palustris, 212, 214 pudica, 213, 217 Howard, Dr L. O., ments to, 16 hudsoni, Itonida, 179, 190 hudsonica, Giardomyia, 118, 121 Hymenoptera, additions to collections, 73 Hyperdiplosis, 122 americana, 123, 125 bryanti, 123, 125 coffeae, 123, 124 eupatorii, 123, 125 fungicola, 123, 124 lobata, 122, 123-24 metbomifoliae, 125 producta, 125 hypogea, Diarthronomyia, 72 acknowledg- inanis, Caryomyia, 97, ITI-13 284 NEW YORK incisa, Arthrocnodax, 83 Trishormomyia, 222, 226 inda, Euphoria, 65 infirma, Itonida, 177, 181 inopis, Retinodiplosis, 156, 159-60 Insects, losses caused by, 70 Insects and camp sanitation, 70 Insects and health, 11 Isoptera, additions to collections, 79 Itonida, 175-208 abdominalis, 207 agraria, 178, 186 albotarsa, 181, 205 americana, 177, 182 antennata, 180, 197 anthici, 181, 203 aphidivora, 178, 188 apicalis, 178, 185 apocyni, 179, 1890 aprilis, 178, 188 canadensis, 178, 182 catalpae, 180, 194-95 cincta, 207 claytoniae, 180, 201 cucurbitae, 180, 194 emarginata, 178, 184 excavationis, I8I, 202 explicata, 179, 187 flavoscuta, 180, 197 foliora, 180, 198-201 fragariae, 178, 184 hartmaniae, 181, 201 hudsoni, 179, 190 infirma, 177, 181 manihot, 204 myricae, 196 nixoni, 179, 192 opuntiae, 181, 202 paucifila, 177, 182 piperitae, 207 pugionis, 180, 194 putrida, 179, 192 quercina, 179, 193 ramuli, 206 recurvata, 178, 183 reflexa, 179, 192 reginae, 180, 196 ruricola, 178, 185 sanguinia, 178, 187 setariae, 179, IOL STATE MUSEUM Itonida — (continued) spiraeina, 179, 189 spiraeaflorae, 179, 190 taxodii, 205 tecomae, 180, 195 terrestris, 178, 186 texana, 181, 204 tolhurstae, 179, 193 tritici, 36, 30, 179, 188 uliginosa, 179, 190 verbenae, 180, 106 Itonididae, 71, 81 Itonididinariae, 8t Janetiella siskiyou, 70 johnsoni, Trishormomyia, 221, 224 June beetles, 9 juniperina, Allomyia, 71 Lestodiplosis, 130, 133-34 karnerensis, Odontodiplosis, 231, 232 Lasioptera piriqueta, 70 Leaf maggots, 72 Lecanium parasites, 68 Lectures, 14 Lepidoptera, additions to collections, 76-78 Leptodiplosis, 128 Lestodiplosis, 128 apocyniflorae, 131, 142 asclepiae, 132, 133, 143 asteris, 132, 147 basalis, 131, 137 carolinae, 132, 145 cerasi, 130, 133 cincta, 130, 135 clematiflorae, 132, 145 crataegifolia,: 130, 134-35” eupatorii, 132, 146 flavomarginata, 131, 138 Horida sis 2 eran eae a fraxinifolia, 130, 136 globosa, 132, 142 grassator, 131, 133, 138-39. hicoriae, 131, 141 juniperina, 130, 133-34: platanifolia, 132, 147 populifolia, 130, 136 rugosa, 132, 1447 27": INDEX TO REPORT OF THE Lestodiplosis (continued) rumicis, 132, 148 scrophulariae, 131, I41 solidaginis, 131, 140 spiraeafolia, 133, 149 triangularis, 133, 149 tsugae, 132, 143 verbenifolia, 131, 137 yuccae, 131, 139 leucostigma, Hemerocampa, 70 Lime, 59 Lime sulphur wash, 9, 20, 71 Linden moth, snow-white, II Liophloeus nubilus, 66 lobata, Hyperdiplosis, 122, 123-24 luteolellus, Crambus, 62-63 macrofila, Arthrocnodax, 82, 89 Macrosiphum solanifolii, 60 Magdalis barbicornis, 57 manihot, Itonida, 204 Maple caterpillar, antlered, 11 Maple bladder gall, 68-69 Maple leaf hopper, Norway, 68 Maple twig pruner, 66 maxima, Hormomyia, 213, 216 May beetles, 9 meibomifoliae, Hyperdiplosis, 125 menthae, Giardomyia, 118 meridionalis, Arthrocnodax, 83, 85 Metadiplosis, 126 spinosa, 126-27 ministra, Datana, 54 modesta, Trishormomyia, 222, 229 Monarthropalpus, 235-38 buxi, 72, 236-38 montana, Giardomyia, 118, 122 Hormomyia, 213, 217 Odontodiplosis, 232, 233 Parallelodiplosis, 164, 172 mosellana, Cecidomyia, 38, 30 Thecodiplosis, 35-54 Mosquitoes, 70 Mycodiplosis packardi, 71-72 myricae, Itonida, 196 needhami, Hormomyia, 212, 215 Nephelodes violans, 63 Neuroptera, additions to collections, 79 STATE ENTOMOLOGIST 1918 285 Nicotine, 71 Nicotine soap preparation, 60 nitela, Papaipema, 64 nixoni, Itonida, 179, 192 Notes for the year, 54 noveboracensis, Giardomyia, 118, 119 nubilalis, Pyrausta, 26-35 nubilus, Liophloeus, 66 nucicola, Caryomyia, 97, 117 Nursery inspection, 16 Oak twig pruner, 66 obesa, Paradiplosis, 150 Obolodiplosis, 152 robiniae, 152-55 obscura, Arthrocnodax, 83, 87 obsoleta, Chloridea, 64 occidentalis, Arthrocnodax, 82, 92 Odonata, additions to collections, 79 Odontodiplosis, 231-34 americana, 232, 233 karnerensis, 231, 232 montana, 232, 233 Onodiplosis, 238 sarcobati, 72, 238 opuntiae, Itonida, 181, 202 Orthoptera, additions to collections, 79 Otiorhynchus sulcatus, 67 packardi, Mycodiplosis, 71-72 palustris, Hormomyia, 212, 214 Retinodiplosis, 156, 161 Papaipema nitela, 64 Paradiplosis, 150 obesa, 150 partheniicola, 151-52 Parallelodiplosis, 162-75 acernea, 163, 167 carpini, 165, 174 caryae, 163, 168-70 cattleyae, 164, 172 cinctipes, 164, 172 clarkeae, 164, 175 corticis, 164, 173 coryli, 163, 170 extensa, 164, 173 florida, 163, 165 montana, 164, 172 286 NEW YORK Parallelodiplosis (continued ) pratensis, 1604, 174 rubisolita, 164, 173 rubrascuta, 163, 105 spirae, 163, 166 subtruncata, 104, 171 triangularis, 164, 171 Parasites, Lecanium, 68 pariana, Hemerophila, 55, 70, 71, 72 Paris green, 59 partheniicola, Paradiplosis, 151-52 paucifila, Itonida, 177, 182 Peach scale, white, 68 Peaches, injurious insects, 67 Pear psylla, 9, 58 Pear thrips, 9, 71 pentagona, Aulacaspis, 68 Peppers, injurious insects, 60 persicoides, Caryomyia, 97, 113-14 photophila, Giardomyia, 118, 119-20 Phyllocoptes quadripes, 68-69 Phyllophaga fusca, 58 pini, Toumeyella, 68 piperitae, Itonida, 207 piriqueta, Lasioptera, 70 Pitch midge, 156 Plaster of paris, 59 platanifolia, Lestodiplosis, 132, pomonella, Carpocapsa, 17-26 populifolia, Lestodiplosis, 130, 136 Potato aphis, 10, 60 Potatoes, injurious insects, 10, 59, 64 pratensis, Parallelodiplosis, 164, 174 Prodiplosis, 92 fitchii, 36, 93 floricola, 92-93 producta, Hyperdiplosis, 125 Promachus fitchi, 58 proteana, Trishormomyia, Psylla pyricola, 58 Publications, 14, 70-72 pudica, Hormomyia, 213, 217 pugionis, Itonida, 180, 104 putrida, Itonida, 179, 102 Pyrausta ainsliei, 32 nubilalis, 26-35 theseusalis, 67 pyricola, Psylla, 58 pyste, Exorista, 56 147 ais, 22 quadripes, Phyllocoptes, 68-69 STATE MUSEUM quercina, Itonida, 170, 193 Quince curculio, 56 ramuli, Itonida, 206 Raspberry Byturus, 57 recurvata, Itonida, 178, 183 Red bugs, 9 Red maggot, 35 Red weevil, 35 reflexa, Itonida, 179, 192 reginae, Itonida, 180, 196 Remedies and preventives arsenate of lead, 55, 57, 59, 65, 60, 71 bordeaux mixture, 59 coal ashes, 59 lime, 59 lime sulphur wash, 9, 20, 71 nicotine, 71 nicotine soap preparation, 60 < Paris green, 59 plaster of paris, 50 road dust, 59 soot, 59 tobacco, 19-22 Remedies and preventives for apple and thorn skeletonizer, 55, 70 apple caterpillar, red-humped, 55 apple caterpillar, yellow-necked, 55 apple maggot, 8 black flea-beetle, 59 box midge, 72 chrysanthemum midge, 72 codling moth, 8, 17-26 corn ear worm, 64, 65 European corn borer, 33 grass webworms, 63 Magdalis barbicornis, 57 maple twig pruner, 66 oak twig pruner, 66 potato aphis, 60 quince curculio, 56 raspberry Byturus, 57 red bugs, 9 San José scale, 9 stalk borer, 64 tomato fruit worm, 64 tussock moth, white-marked, 70 wheat midge, 53 white grubs, 59 resinicola, Retinodiplosis, 155, 156-58 INDEX TO REPORT OF THE STATE ENTOMOLOGIST 1918 resinicoloides, Retinodiplosis, 156, 160 Retinodiplosis, 155 albitarsis, 72, 156, 162 inopis, 156, 1590-00 palustris, 156, 161 resinicola, 155, 156-58 resinicoloides, 156, 160 taxodii, 156, 158 rhoina, Arthrocnodax, 82, 90 Road dust, 59 Robber fly, 58 robiniae, Obolodiplosis, 152-55 rubisolita, Parallelodiplosis, 164, 173 rubrascuta, Parallelodiplosis, 163, 165 rufa, Arthrocnodax, 82, 84 rugosa, Lestodiplosis, 132, 144 rumicis, Lestodiplosis, 132, 148 ruricola, Itonida, 178, 185 Rye, wheat midge in, 48-53 sambucifolia, Arthrocnodax, 83, 91 San José scale, 9 sanguinia, Itonida, 178, 187 sanguinolenta, Caryomyia, 96, 97, 105-6 sarcobati, Onodiplosis, 72, 238 saturni, Trishormomyia, 221, 223 sayi, Epidiplosis, 127 Schizura concinna, 54 scrophulariae, Lestodiplosis, 131, 141 scrutator, Calosoma, 66 Seed corn maggot, 7, 10 setariae, Itonida, 179, 191 shawi, Trishormomyia, 222, 223 similis, Caryomyia, 96, 97, I10-I1 siskiyou, Janetiella, 70 Smartweed borer, 32 solanifolii, Macrosiphum, 60 solidaginis, Lestodiplosis, 131, 140 Soot, 59 Special entomological service, 12-13 speciosa, Astrodiplosis, 239 spinosa, Metadiplosis, 126-27 spirae, Parallelodiplosis, 163, 166 spiraeaflorae, Itonida, 1709, 190 spiraeafolia, Lestodiplosis, 133, 149 spiraeina, Itonida, 179, 189 Spraying, notes on, 71 Stalk borer, 61, 64 287 subtruncata, 171 sulcatus, Otiorhynchus, 67 Summer leaf feeders, 72 sycophanta, Calosoma, 65 sylvestris, Arthrocnodax, 82, 84 Parallelodiplosis, 164, taxodii, Itonida, 205 Retinodiplosis, 156, 158 tecomae, Itonida, 180, 195 terrestris, Itonida, 178, 186 texana, Itonida, 181, 204 Thecodiplosis cockerelli, 71 mosellana, 35-54 theseusalis, Pyrausta, 67 thompsoni, Caryomyia, 96, 97, 106-8 Thorn skeletonizer, sce Apple and thorn skeletonizer Tipulidae, additions to collections, 80 Tobacco, injurious insects, 50 Tobacco for codling moth, 19-22 tolhurstae, Itonida, 1709, 103 Tomato fruit worm, 64 Tomatoes, injurious insects, 10, 59, 60, 64 Toumeyella pini, 68 toxicodendri, Adiplosis, 234 triangularis, Lestodiplosis, 133, 149 Parallelodiplosis, 164, 171 trisectus, Crambus, 62 Trishormomyia, 220-31 bulla, 221, 222, 227 canadensis, 222, 228 clarkei, 222, 230 2 crataegifolia, 221, 222, 224-26 dilata, 221, 226 fenestra, 221, 22 helianthi, 222, 227 incisa, 222, 226 johnsoni, 221, 224 modesta, 222, 220 proteana, 222, 228 saturni, 221, 223 shawi, 221, 223 verruca, 222, 230 tritici, Cecidomyia, 36, 38, 39 Contarinia, 36, 39 Itonida, 36, 39, 179, 188 tsugae, Lestodiplosis, 132, 143 288 NEW YORK STATE MUSEUM tubicola, Caryomyia, 96, 97, 108-10 Tussock moth, hickory, 7, II white-marked, 8, 70 Tussock moth contest, 71 uliginosa, Itonida, 179, 190 unicolor, Byturus, 57 venatoria, Feltiella, 70 verbenae, Itonida, 180, 196 verbenifolia, Lestodiplosis, 131, 137 verruca, Trishormomyia, 222, 230 villosum, Elaphidion, 66 violans, Nephelodes, 63 vulgivagellus, Crambus, 62, 63 websteri, Asphondylia, 70 Webworms, grass, 10, 61, 62-63 Wheat midge, 10, 35-54 White grubs, 9, 58 Young, D B., entomological work, 15 ypsilon, Agrotis, 63 yuccae, Lestodiplosis, 131, 1390 7 iain i. iT rae ve : iy ay Ae Mi Dy! ip ns aes ine i i hile as See Plan kauin oe, ne rT ' ae one v at f y 7 a ei fee tin |: i tae Bh a x : Bip 4 SMITHSONIAN INSTITUTION LIBRARI ES 3 9088 01272 3474 Woes a a ae i