University of the State of New York EIGHTH REPORT ON THE Injurious and Other Insects OF THE STATE OF NEW YORK KoR THK Year 1891 [FFom the Forty-fifth Report on the New York State Museum] By J. a. LINTNER, Ph. D., State Entomologist ALBANY UNIVERSITY OF THE STATE OF NEW YORK 1893 TABLE OF CONTENTS. PAGE. INTRODUCTORY 121 The year not prolific in insect life, 121. Causes of varying abund- ance of insects in different years, 121. Aggregate of insect injuiy can seldom be foretold a year in advance, 121. New subjects for study brought each year to the economic entomologist, 121. Grain crops almost entirely free from their usual enemies, 122. Fruit insects have been the most abundant, 122. Helpful replies made to inquiries relating to fruit insects, 122. Of the operations of the apple-tree tent-caterpillar during the year, 122. Of the apple-tree aphis and remedies for it, 123. Spread and injury of the apple-leaf Bucculatrix and its parasite, 123. Coleophora malivorella in Western New York, 123. Work of the apple-leaf sewer in Wayne county, 123. Increase of the eye-spotted bud-moth in the " apple-belt,"' 124. Appearance of, and alarm excited by, two new pear-tree pests in the Hudson river valley, 124. Operations of the pear-tree Psylla in Greene and Columbia counties and losses caused by it, 124. Spread of the pear midge from Connecticut into New York, 124. Nature of its attack, 124. Its transformations, 125. Preference for certain varieties of pears, 125. Lygus pratensis attack on pears, 125. Injuries from Lygus invitus, 125. Cherry aphis in St. Lawrence county, 125. Plum aphis in Scliohai'ie county, 125. Plum curculio in Albany county, 125. Grapes and peaches destroyed by the rose-bug, 125. Arrest of injuries of the currant-worm, 125. The cow-horn fly in New York, 126. A new onion pest at Canas- tota, 126. Epilachna borealis injuries on Long Island, 126. Increased interest of agriculturists in entomological investigations, 126. Col- lections of the Entomologist during the year, 127. Contributions to the collections, 127. Why some brief notices of insects have been presented in this report, 127. Courtesies acknowledged, 128. INJURIOUS INSE3TS 129 Synchlora glaucaria, the Raspberry Geometer 129 Synonymy and bibliography, 129. A strange-looking and rarely seen catei-pillar, 129. Figure of the insect, 130, Artful concealment or mimicry of the caterpillar, 180. How the Geometridee travel, 130. The raspberry Geometer should be a common insect: a possible reason why it is not, 131. Description of the caterpillar, 131. The moth described, 131. Natural history of the insect so far as known, 132. 14 106 Table of Conteivts. PAGE. Its different stages, 132. The simple cocoon made b}' it, 132. Chance of the insect being eaten with the berries, 132. Its degree of abund- ance and its range in the United States, 133. BuccuLATRix Canadensisella, the Birch-leaf Bucculatrix 133 Its bibHography, 133. Its operations at Ausable Forks, N. Y., 133. A severe attack on birches at Scottsville, N. Y.,jl34. Its beautiful dis- section of the leaves, 134. Figures of the insect and its work, 134. Description and figures of the caterpillar, 135. Its presence in Wash- ington Park, Albany, 135. The molting-cocoon described, 135. Entrance into and occupancy of the cocoon, 136. The cocoon proper described and figured, 136. Compared with the Bucculatrix pomifoli- ella cocoon, 136. Where the cocoons are placed, 137. Detailed account of the construction of the cocoon, 137. Differently described by Mr. Fletcher, 138. Difference in the cocoon of B. avibrosuefoUella, 138. The moth of tlie birch-leaf Bucculatrix described, 139. Its life- history has not been studied, 139. What is known of its habits and transformations, 139. The injuries of the larva, 140. Its occurrence in New York, New England and Canada, 140. How it may be destroyed, 140. DiPLOSiS PYRivoRA, the Pear Midge 140 Its synonymy and bibliography, 140. Numiier of insects attacking the apple tree, 141. The pear tree hitherto, comparatively free from insect injury, 141. Two new destructive pear tree pests in the Hudson river valley, the pear midge and the pear-tree Psylla, 141. The pear midge figured, 142. Features of the larva and fly, 142. First noticed in this country at Meriden, Conn., 142. Its injuries at Meriden, 142. Studied by the Entomological Division of the U. S. Department of Agriculture, 143. Is it the Ceciaomyia nigra of Meigen? 143. Described by Dr. Riley as C pyrivora, 143. Efforts for its extermination at Meriden, 143. Why the effort failed, 143. Its discovery at Catskill, N. Y., in 1891, 144. How the larvae infest the fruit, 144. Varieties of pears infested by it, 144. Its presence in Mr. Cole's orchards, 144. Figures showing the infested fruit, 145. Infested pears readily recognized, 145. Characters of the infestation, 146. Number of larva? in a pear, 146. When they leave the fruit, 146. How they escape from it, 146. How the infested fruit is affected, 146. The larva described and figured, 147. Observations on the larva? entering the ground for pupation, 147. Character of the cocoon, 148. When pupation occurs, 148. When the perfect insect emerges, 148. The midge described, 148. The male genitalia figured, 148. The eggs are deposited in the blossom, 149. Oviposition as described by Schmidberger, 149. The midge attack as observed at Ghent, N. Y. , 150. Progress of attack from Meriden west- ward, 150. Its commencement at Albany, 150. Arresting the attack by picking and burning the infested fruit, 150. Using the Lawrence pear as a lure for oviposition and subsequently destroying the blossoms Table of Contents. 107 PAGE. with the contained larvje, 150. How the blossoms might be destroyed, 151 . Killing the larva- just after they have entered the ground by appli- cation of kerosene emulsion, 151. Use of lime or ashes for the same purpose, 151. A united effort of pear growers needed for the control of the pest, 151. Clastoptera obtusa, the Obtuse Clastoptera 152 Its bibliography, 152. Its "cuckoo-spittle" seen on a linden tree, 152. Nature of the spittle, 152. Its injury in this instance moderate, 152. Its rapid development, 153. The insect figured, 153. Usually occurs on the alder, 153. Observed by Dr. Fitch on butternut, 153. Reported by Mr. Van Duzee on the blueberry, 153. It is found over a large portion of the United States, 153. Occurs also in Canada, and southward into Mexico, 153. Clastoptera pini, the Pine Clastoptera 153 Its bibliography, 153-4. Received from pines in Dutchess county, N. Y. , 154. The insect figured and described, 154. Description of the larval stage, 154. Miss Wolsey's observations on the larvae, 154. When the mature insect appears, 155. The pi'esent identification of the larva not a positive one, 155. Chauliodes PECTiNicoRNis, the Comb-horned Fish-fly 155 Synonymy and bibliography of the species, 155 The larva taken from under the ice of a pond in Tiashoke, N. Y., 155. Its rarity, 155. Its literature not extensive, 156. Figures of the larva, Plate 1. Larvaj of Chauliodes nistricornis not uncommon in the south and west, 156. Observed in Ohio by Professor Weed, and figured in its several stages, 156. Professor Riley on Corydalis and Chauliodes, 156. Description of the larva of Chmiliodes pectinicornis and its habits, by Mr. Moody, 157. Its brief pupal stage, 157. The winged insect figured, 158. Its principal features, 158. Some strange movements of C. rastricornis larva, 158. What it feeds upon, 15S. Its distribu- tion in the United States, 158. C serricornis not uncommon in New- York, in June, 159. The winged inse3t figured, 159. Dates of collec- tion of C. pectiniGornis, 159. Its larva not often injurious, 159. Corydalis cornuta, the Horned Corydalis 159 Its bibliography, 159, 160. Prof. Riley's writings on it, 160. Figures of the larva, pupa, and winged insect, Plate 2. Where its eggs and young larva are figured, 160. Error in figuring the eggs, and where cor- rected, 160. References to other writings, 160. Derivation of its specific name, 161. Its place in classification, 161. Habitat of the larvae, 161. Largely used for fish bait, 161. Common names by which known, 161. Its formidable appeai-ance, 161. A double system of respiratory organs, 161. Dr. Norwood on its abundance in Schoharie creek and manner of collecting for bait, 161. A larva eight months in an aquarium without food, 162. Respiration as observed under confinement, 162. Movements of the branchial tufts, 162. Ability to swim in a forward direction as well as backward, 162, 108 Table of Contents. PAGE. NOTES ON VARIOUS INSECTS 163 Thalessa lunator, the Lunated Long-sting 163 Numerous examples of the insect observed on and about the tirunk of a dead elm, 163. The trunk perforated by many small, round holes, 163. The holes frequented by a wood-wasp, Pemphredon concolor, 163. The holes beUeved to have been made by the insect, 163. The Pemphredon figured, 163. Nothing recorded of the habits of the Pemphredons, 163. What is written of the two European species, 163. A Tremex coliimba taken from the same trunk, 163. Abundance of the " long stings" in August, as reported by boys, 163. Figui-e of Thalessa lunator with structural details, and of its larva and pupa, Plate 2 Males apparently awaiting the emergence of the females, 163. Females observed in ovi- position, 164. Ovipositing to the depth of two inches in solid wood, 164. Difficulty with which the ovipositor could be withdrawn by hand; the abdomen torn apart in the attempt, 164. How long a time the Thalessas were observed, 164. An instance reported where a Thalessa was seen to insert its eggs in a colony of exposed Datana caterpillars, 164. The statement questioned by Prof essor Riley , 164. An Anomaloii species observed by Professor Gillette to oviposit in Datana ministra under similar attendant circumstances, 164. Probability that memory was atfault in referring to Thalessa, the oviposition observed: someother large Ichneumon may have been mistaken for it, 164. Serious results reported as resulting from a wound in the arm near the wrist by a " long-sting," 161. Correction of an error made in the Fourtli Report on the Insects of New York in presenting a figure as Thalessa lunator which was that of Rhyssa persuasoria, 165. How the two species differ, 165. Tremex coluniba figured in its larval, pupal, and perfect stages, 165. The parasitic association with it of T. lunator, 165. The occurrence of Rhyssa persuasoria in Canada, 166. ? Janus flaviventris, the Currant-stem Girdler 100 Reference to the notice of the currant-stem girdler contained in the Fourth Report on the Insects of New York, 166. Girdled currant stems I'eceived from Mr. Rose, of South. Byron, N. Y., 166. Injuries from it reported by Mr. Rose, 166. Its operations observed at Ghent, N. Y., 166. The eggs found in the punctured twigs, 166. The insect reared from girdled twigs in Adrian, Mich., 166. Identified in "Insect Life" a,s Janus flaviventris, 167. The insect — a saw-fly — had been observed by Dr. Fitch in rye- fields: its operations therein, 167. Descrip- tion of the species, 167. Different references of Janus in < lassifica- tion, 167. Girdled twigs received from Mr. Rose which had been marked the preceding season, gave out one exami^le of the insect, 168. Some doubt of its being the Yitch. flaviventris, 168. Nematus Erichsonii, the Larch Saw-fly 168 Still operating in the Adirondacks, 168. Many larches apparently killed by its attack observed near the Wilmington Notch, 168. Had been observed bome years previous in the Lake Placid region, 168. Table of Contents. 109 PAGE. Figures of the saw-fly and its larvae and a distorted larch, 168. Severe injuries reported from Pnnce Edward Island, 169. The larches ravaged by it over all the Province, 169. First observed there in 1889, 169. Hopelessness of contending with the insect when large areas are infested by it, 169. On isolated trees it may be destroyed by arsenical spraying, 169. Elsewhere, attacked trees had better be cut at once and used as timber for which it is desirable, 169 . Feniseca Tarquinius, the little Orange Butterfly 169 Usually rare, but abundant in Keene valley in 1891, 169. Its method of flight, 169. Seldom seen on the ground, 170. Dates of capture in 1891, 170. Pupation of the insect. 170. Concealment of the larvae within clusters of Pemphigus tessellata, 170. Indication of their pres- ence there, 170. P. tessellata probably reduced in number by tlie feed- ing of the larvae, 170. Transformations of the insect, 170. EuDRYAS GRATA, the Beautiful Wood-nymph 170 Increase of the insect, 170. Its fondness for the Anipelopsis quin- quefolia, 170. Possibility of its becoming a household pest, 170. Car- pets in Albany injured by the caterpillar in preparing for pupation, 170. Figures of the caterpillar and of the egg, 170. The moth figured, with remarks on its beauty, 171. Expressiveness of its scientific and popular names. 171. SCOLIOPTERYX LIBATRIX, the Scallop-wing 171 The caterpillar feeding on willow: its description, 171. Structure of its cocoon, 171. Period of its pupation, 171. Early appearance of the moth, 171. Its habits as recorded in England, 172. The moth survives the winter, 173. Is frequently taken in collections "at sugar," 172. Dates of its appearance " at sugar " at Schenectady, N. Y., in 1875 and 1876, 173. Time of its greatest abundance, 173. The two broods of June and August, 173. According to Guenee, it has no regular time for emerging from the pupa, 172. The larva said to feed on poplar as well as on willow in Europe, 173. ExECHiA species ? , a Fungus Gnat 172 Interest excited by the large number occurring within doors at Albany, 173. Specimens sent to Europe for determination, 173. Found to be an undescribed species of a genus not hitherto recognized in the United States, 173. The Exechia species feed on mushrooms, 172. Whether they shall be regarded as injurious will depend on the value attaching to mushrooms, 172. Opinion as to their value is divided in Europe, 172 Reference to the species of Exechia occurring in England, 173. They often abound on windows of houses in autumn, 172. Telephorus ?bilineatus, occurring on snow 173 MiUions of the larvae on the snow in February, in Herkimer county, N. Y. , 173. Covered the snow for a distance of a half mile, 173. Were seen traveling about for a day or two, 173. Identified as, or very near 110 Table of Contents. to, T. hilineatns — possibly T. (UirolinuH, 173. Larva and imago of the former, figured, 173. Tlie larvae supposed to have been di'awn out of the ground by a warm rain, 173. A similar occurrence observed of the bronze-colored cut- worm in SuUivan county, N. Y., and in Can- ada, 173. At another time, large numbers of Telephorus larvae were drawn from a well in Connecticut during the winter months, 174. Their probable source, 174. The Telephorus larva found under stones, 174. A beneficial insect, as it feeds on the apple-worm, 174. The beetle found on fruit trees and on birch, 174. It is one of the Lampy- rid^, but is not luminous, 174. Lachnosterna fusca, the White-grub of the May Beetle 174 Larvae received can not be positively identified as those of this species, 175. Difficulty in distinguishing the closely aUied species, 175. The L. fusca group a large one, 175. Their larvae can not be identified, 175. Not a single larva of the genus Lachnosterna positively known, 175. Their feeding habits, 175. Cyllene pictus, the Hickory Borer 175 The pupae found in March in dry hickory, 175. The insect figured in its different stages, 175. For a long time confounded with the locust borer, 175. Features by which they may be separated, 176. The hickory borer less pernicious than the locust borer, 176. Other trees attacked by the hickory borer, 176. Difference in the time of the two species appearing abroad, 176. Tenebrio molitor, the Meal-worm 176 The pupa3 and beetles found in salt in a meal-room, 176. The larvaj had probably entered it as a convenient place for pupation, 176. The insect figured in its three stages, 176. Wherein it differs in appearance from T. obsGurus, 177. A common species in Europe, whither it has been distributed over other parts of the world, 177. Introduced in Chili to serve (the larva) for bird food, 177. The larvae ejected from the human stomach, 177. Alarm caused ))y noises made by the beetles within a pin-cushion in a bed-room, 177. Pulvinaria innumerabilis, the Maple-tree Scale Insect 177 Destroying the maples in the streets of Brooklyn, L. I., 178. Destruc- tive also to grapevines and the Japan ivy, 178. Losses resulting from neglect of the insect, 17«. The scale and its cottony secretion figured, 178. Its abundance in Buffalo, N. Y. , reported by Mr. Van Duzee, 178. Gryllus luctuosus, the Common Black Cricket 179 The insects enter a house at night and destroy a new suit of clothes, 179. The Gryllidfe not exclusively vegetarians, 179. A cricket that ate boots and shoes, 179. Indiscriminate feeding of crickets quoted, 179. Clothing charged with animal matter attractive to them, 179. Why new woolen clothing may be eaten, 179. Table of Contents. Ill PAGB. Trombidium locustarum, the Locust Mite ITS Supposed eggs under grasshoppers' wings are of the above-named mite, 179. Valuable service that it renders in destroying grasshopper eggs, 180. Its transformations and habits, 180. Figured in its different stages, 180. Reference to a detailed article on it, 180. Distributed over the eastern, central, and western States, 180. Preys on the eggs and perfect insect of the lesser locust, Melanoplus atlanis, in New Hamp- shire, 180. INSECT ATTACKS — THEIR REMEDIES AND PREVENTIVES 181 Remedies for the Peach-tree Borer 181 Young peach trees more exposed to injury, 181 . Inquiry of the value of a wood ashes remedy proposed, 182. Figures of the moths. 182, 183. Not a difficult insect to control by proper means, 182. Advan- tage of cutting out the borer, 183. All peach orchards should be pro- tected from attack, 183. Long period of egg-laying of the moth, 183. The Bateham carbolic acid wash preventive, 183. When it should be applied, 184. The Hale carbolic acid and Paris green wash, 184. What it will accomplish, 184. Importance of hunting out and killing the borer, and how to do it, 184. The larva, coccoon, and pupa figured, 184. The Shaker peach-tree borer v^ash; preparation for, and how it should be applied, 185. Protection from the borer by mounding, 185. A new tree-protector of wire netting, 185. Recommendation quoted of treating infested trees with wood ashes above the roots, 186. The safety of this application questioned, 186. Mr. Woodward's method of protection, 186. An Ichneumonized Caterpillar — Interesting Case of Parasitism 186 Inquiry of hop vine "worm," 186. Is an ichneumonized Sphinx caterpillar, but probably not a hop vine feeder, 187. What the cocoons on the body were and what they indicate, 187. Figure of an ichneu- monized Dar (ipsa Myron, 187. The Sphinx parasite had again been parasitized by another insect, 187. The first parasite, Apanteles con- gregatiis, — the secondary one, an undetermined Chalcid, 187. The other specimens inquired of may have been Grapta chrysalids, 187. A New Onion Pest, Agrotis ypsilon (Rott.) 188 Inquiry from Canastota, N. Y. , of a formidable onion pest, 188. Its injuries related, 188. Different from the onion pest of Orange coimty, N. Y., 188. Is probably the Agrotis ypsilon cut- worm, 189. The cut- worm and the moth it produces, figured, 189. Continued appearance of the moth from May to September, 189. The larval injuries may continue for an indefinite time, 189. Recommendation made for destroying the caterpillars, 189. Hand-picking should be resorted to, 190. Kerosene emulsion applied while feeding at night w-ould be effective, 190. Results obtained from a soft soap solution, 190. Prob- abihty that this cut-worm is cannibalistic, 191. The bred moth gave Agrotis 7jpsilon, 191. Length of its pupal stage, 191. 112 Table of Contents. PAGE. The Stalk-borer, Gortyna nitela, as an External Feeder 191 The caterpillar taken while feeding on the tassels of corn, 191. Its weU-known boring habits, 191. List of its known food-plants, 191. Figure of it and of the moth, 191. Frequently occurs in potato stalks, 191. Its characteristic features, 192. Different appearance and habit of the corn-tassels specimens, 192. The injury caused will not be serious, 192. The Cow-horn Fly in New York 192 Examples received from Oswego county, N. Y., with inquiiy, 192. Reply sent to the Oswego Times. 192. Probably carried into Oswego county by the railroads traversing it, 193. General appearance of the fly, 193. How its injury is inflicted, 193. A recent importation from France, 193. Where it occurs in the United !"tates, 193. How its attack may be early recognized, 193. Importance of promptly report- ing aU new insect attacks, 193. Observations on the attack in Oneida county, N. Y., 194. Its injuries at first greatly exaggerated, 194. They never prove fatal, 194. How they affect the cattle, 194. Where the fly breeds, 194. The larvte may be destroyed by spreading the fresh droppings or applying lime to them, 194. When the fly entered New York, 195. Its spread over the State, 195. Attack may be pre- vented by greasy applications to the cattle, 196. Oviposition of the fly, 196. Reference to publications on the insect, 196. Wire- WORMS and Remedies for them 197 Efficient remedies are starvation through removing their food, and growing a crop of buckwheat, 197. A crop of mustard regarded in England as a specific against the wire-worm, 198. Figures of wire- worms, 198. They are often confounded with cut-worms and thousand- legged worms, 198. How cut-worms may be recognized, 198. A representative figure of the beetles that they produce, 199. Have received insufficient study, 199. Reference to publications on them, 199. A cut- worm and thousand-legged worm figured, 199. The recent study of wire-worms made at Cornell University, 199. The experiments in remedies and preventives conducted, 200. Unsatisfac- tory practical results obtained, 200. Valuable life-histories worked out, 200. The Rose-bug and How to Kill it 200 Locahties where protection from the rose-bug is hopeless, 200. The insect illustrated, 200. Its breeding grounds, 200. Uniform period for its flight therefrom, 200. Is usually controllable in New York and the New England States, 201 . May be accompHshed by beating from the plants into kerosene and water, 201. Spraying with kerosene emulsion successful in Maryland, 201. Another remedy found in sludge-oil soap, 202. Prof. Smith's bulletin on the insect should be consulted, 202. Table of Contents. 113 PAGE. The Maple-tree Borer, Glycobius speciosus {Say) 202 Injuries from the borer and imjuiiy how to kill it, 202. How the presence of the young borer may be detected, 202 . Cutting out, the best remedy, 203. When the insect was first observed, 203. Described and illustrated by Dr. Harris in his usual graphic style, 203. Its increase in recent years, 203. The beauty of the beetle, 203. It attacks healthy trees, 204. Observations made upon it at Schoharie, N. Y., in 1859, 204. Its burrows beneath the bark described, 204. The grubs frequently girdle the tree, 204. How they disfigure the trunk, 204 . Large number of maples killed by them at Bennington, Vt.,305. Their ravages at Glens Falls, N. Y., 205. When ovipo- sition occurs, 205. The Squash-bug, Anasa tristis (De Geer) 205 Figure of the insect, 205. Replying to inquiiy, Paris green not serviceable against it, 205. Best remedy, perhaps, is trapping and killing the hibernated females, 205. Partial success in using counter- odorants to ward off attack, 205. When and how to use the traps, 206 . What the traps may consist of, 206 . Search for and destruction of the eggs, 206. Killing the young squash-bugs soon after hatching, 206. Value of the preceding methods, 206. Search should be made for the bugs injuring the main stalk below the surface of the ground, 206. How this injury may easily be prevented, 296. High fertilization commended, 207. The Hop-vine Aphis and Remedies 207 LiabiUty of the hop crop to destruction by the hop-vine aphis, 207. Disastrous years can not be predicted, 207. The insect introduced from Europe, 207. The "hop-washings" in England, 207. Its life- liistory recently worked out, 207. Possible to preserve the hop crop from destruction, 207. Where the insect hibernates, -08. The " stem- mother " figured, 20S. The early spring broods on plum, 208. The migrating brood and figure of the "migrant," 208. When to attack the aphis, 208. How its excessive multiplication may be prevented, 208. Formula for the best insecticide for use, 209. How to apply the emulsion, 209. Formula for the English hop-wash, and its efficacy, 208. Spraying to be repeated at intervals, 209. Preventives of attack, 210. The Melon Aphis, Aphis cucumeris Forbes 210 Aphides infesting muskmelon leaves in Lowell, Mass., identified as the above-named species, 210. The insect characterized, 211. Its injuries in Illinois, 211. Now for the first time observed in the eastern part of the United States, 211. A parasitic attack upon it, 211. Pro- fessor Forbes' recommendations for destroying the aphis, 212. The muskmelon "slioots" received show galls resulting from Cecidomyia attack, 212. The insect obtained from the galls, 212. It seems to be undescribed — if so, might be named Cecidomyia cucumeris, 212. 15 114 Table of Contents. PAGE. Melon and Strawberry Pests: Aphis cucumeris and Corimel^na pulicaria 212 Plant-lice injuring cantaloupe and cucumber vines in Maryland are probablj' Aphis cucumeris, 213. How they may be killed by spraying with a rod and Vermorel nozzle, 213. The insect puncturing the blossom stems of the strawberry is probably the ' ' flea-like negro- bug," 213. Figure of the insect, 213. Its numerous food-plants, 213. Cultivation of two favorite food-plants (weeds) recommended as lures, 313. Has recently proved destructive to cucurbitaceous vines in New Jersey, 213. Fishoil soap said to be the best remedy for it, 214. Scale Insects on Camellia and Oleander 214 Oleander leaves from Jacksonville, Ala., with supposed fungus attack, show only the oleander scale, Aspidiotus nerii, 214. The scales figured and characterized, with figure of the male insect, 214. Its extensive distribution, 214. The many plants infested by it, 215. Features of the camellia scale, 215. It apparently belongs to ParZa^orm, 215. Kerosene emulsion and whale-oil soap solution effective against these scales, 215. Kerosene may safely be applied to the underside of infested leaves, 215. A Grapevine Scale Insect, Lecanium sp. ? 215 A scale insect infesting a vine in Springfield, Mass., described. 215. The eggs beneath it described, 215. The species not recognized, 216. A different scale on the same vine is evidently a Lecanium, 216. The newly hatched larva with no cottony secretion, 216. Number of eggs counted beneath one scale, 216. How the scales may be des- troyed, 216. Importance of destroying the eggs, 216. Apple-tree Insects of Early Spring 216 Abundance of insect attacks on apple buds, 216. Can not well be checked if operations against them are deferred, 216. Insects from Lansing, N. Y.. 217. The apple-tree aphis identified, and the harm it causes, 217. The apple-tree case-bearer, Coleopliora malivoreUa, 217. The second time of its recognition in New York, 217. The life- history in brief and habits and remedy for it, 218. The eye-spotted bud-moth associated with the preceding, 218. Its increase in New York, 218 The apple-leaf Bucculatrix from Malcom, N. Y., 218. May be killed by arsenical spraying, 219. Of insects received from Lincoln, N. Y., a small gray moth frequenting apple-tree in May, is (wrongly) identified as the eye-spotted bud- moth, 219. A "small green louse" occurring on the buds is accepted as the pear-tree PsyUa, 219. It had also been recently received on blossom buds of apples, from Ghent, N. Y. , 219. The pi'esence of the insect indicated by the " honey-dew," 220. Its previous occurrence on apple recorded, 220. When and how to attack the Psylla, 220. Subsequent studies have Table of Contents. 115 PAGE. shown that the eye-spottfd liud-moth does not appear on the wing in May, 220. Reference to Mr. Slingerlaiid's Bulletin on it, and another on the pear-tree Psylla, 220. Some Injurious Insects of 1890 221 A paper read before a Farmers' club by Mr. Young notices a blight in wheat and rye; an insect attack on oats; the potato scab; the elm- leaf beetle: comments requested on it, 221. Examination of wheat and rye from several locaUties show attacks of a Nematode worm, 221. Study lately given to Nematode attacks, 221. "Clover-sickness" in England caused by a Nematode, 221. Publications on the An- guillulidce, 221, 222. Blight in oats associated with bacteria presence, 222. Shrivehng of oats caused by the grain aphis, 222. Studies of the potato scab have shown several kinds proceeding from different causes, 223. One form shown by Dr. Thaxter to be caused by bacteria, 222. A " surface-scab" and the " deep-scab," 232. Beneficial effect of heavy rains in destroying the elm-leaf beetle, not before reported, 222. A simple remedy suggested by it. 228. Request for investigation of insect attacks always welcomed, 223. APPENDIX. (A) ENTOMOLOGICAL ADDRESSES 227 Some Injurious Insects of Massachusetts 227 Gratification in addressing the State Board of Agriculture, 227. What the State has done for the promotion of economic entomology, 227. A prize offered a century ago for the best essay on the canker- worm, 227. The prize awarded to W. D. Peck, 228. The " Natural History of the Canker-worm," a pioneer in a new line of investigation, 228. Another valuable publication by Mr. Peck, 228. Investigations of Dr. Harris, stimulated by Prof. Peck. 228. The entomological work of Dr. Harris, 228. His valuable publications, 228. Report on Insects Injurious to Vegetation, 238. Subsequent studies and pub- lications of Mr. Sanborn and Dr. Packard, 2i!9. Other publications, 229. The collection in economic entomology in the Cambridge Museum made by Dr. Hagen, 229. Its unrivalled richness, 33C. Benefits result- ing from its study, 2^0. Topics for the present paper suggested l)y the Secretary, 231. Necessity of knowing w^lio our insect foes are, 231. Nature of attacks often misunderstood, 231. Cut- worms: their place in classification; number of species; their principal features, 232. Habits of the caterpillars and the moths, 233 . Their natural history and varied food-plants, 234. Their injury to grass, corn, wheat and bar- ley, 2-35. Species attacking cabbage, 235. Injuries to turnips, onions, beans, clover, tobacco and flowering plants, 286. Their natural enemies, 236. The robin a formidable enemy, 237. The insects that feed upon them, 337. Tlie parasites that destroy them, 238. Among 116 Table of Contents. PAGE. other remedies for their attack are gas-Ume, breaking up the sod, removing their food, and late ploughiag, 239. Two effective preventives of cut-worm attack on corn, 239. The digging-out remedy and testimony to its value, 240. Use of baits poisoned with Paris green, 241. Other remedies named, 241. Losses from Tobacco- WORMS in .Massachusetts, 242. Sphinx quinquemaculata, its larva, moth, and oviposition, 242. Abundance of the larva, 1.'43. Remedies are " worming" and poisoning, 243. Collecting the moths, 244. Hellebore and Paris green available against cut- worm injury to tobacco, 244. The Apple maggot, a comparatively recent pest in New England, 245. More injurious than the codling-moth worm, 245. Principal characters of the perfect insect, 245. Oviposi- tion and operations in the fruit, 245. Transformations of the insect, 246. Features of the larva, 246. Is a native insect, 240. Formerly fed on wild fruits, 246. Its westward extension, 246. Operations and spread in New England, 246. A serious pest in New York, 247. A local insect, 247. Early apples more liable to attack, 247. Favorite varieties might be grown as lures, 247. Additional study of the insect needed, 248. Desiderata in its life-history, 249. An admirable study of the insect recently made, 249. The Asparagus beetle prevailing in Massachusetts, 250. Description of the beetle, 250. The "cross-bearer" variety, 250. Its well known associates in the family of Chrysomelidte, 250. A con- gener, Crioeeris 12-punctata has lately appeared in the vicinity of Baltimore. 250. It also feeds on asparagus, 250. The introduction of C. aspamgi, — first seen on Long Island, 251. Its slow spread in the vicinity of New York City, 251. Has appeared in Central New York, 25 . Its life-history, 251, 252. Remedies are, hand-picking, employing fowls to hunt them, and cutting the seed stems of asparagus, 252. The best remedy believed to be application of freshly-slacked lime, 252. Mr. Fuller's success with the -lime remedy, 253. Complaints of the Grapevine "Thrips," 253. Thrips an incorrect name for the insect, 253. Is one of the leaf -hoppers, — its features and operations, 253. How the foliage is affected, 253. Its allies in the Hemiptera, 254. Several species occur on grapevines, which belong to Erythroneura, 254. The more common one is Typhlocyha vitis, 254. Its description, habits, and ti-ansformations, 254. What the "thrips" proper is, 254. Where placed in classification, 254. Doubts regarding its true place, 255. Habits of the Thripidse, 255. Some species serviceable, 255. Fumi- gation for the leaf -hoppers partially successful, 255. Vaporization of extract of tobacco the best remedy, 255. How it has been employed in France, 255. The grapevine leaf -hopper more abundant in graperies than elsewhere, 256. Occasionally injurious in vineyards, 256. Remedies for it in vineyards, 256. The Rose-leaf " Thrips "that destroys the leafage of roses, 256. Allied to the preceding and known as Empoa rosce, 256. Its similar life-history, 257. May be kiUed by spraying Table of Contents. 117 PAGE. with an infusion of tobacco, 257. Importance of destroying it in the larval stage, 257. The heavy tribute imposed by insect depredations is vohintarilj^ paid, 257. It may be successfully resisted, 257. Our Insect Enemies and How to Meet Them 2ri8 Agriculture the basis of all other industries, 258. Its importance shown in our aggregate agricultural population of sixty milUons of persons, 258. The total value of farm products in 1886,258. Why the agricultural industry should be cherished, 258. Its past rate of progression will not continue in the Eastern United States, 259 . Why it will not be sustained, 259. Its present condition here and in the West, 259. What has produced this condition, 259. An advance now being made in scientific agriculture, 260. Beneficial results of Agri- cultural Colleges, Experiment Stations, and Farmers' Institutes, 260. Much of the labor and expei se in the production of crops lost if the resultant pi'oducts are not secured, £(0. Excessive losses from insect depredations in the United States. 260. Their magnitude has com- pelled the study of insect pests, 261. Progrfss of Economic Ento- mology, 261 . What it is, 261 . The first publication under State authority, 261 . Followed by reports of Fitch, Walsli, Riley, Le Baron, Thomas, and Forbes, 261 . Glover's labors, 261 . Establishment of an Entomological Division of the United States Department of Agricul- ture, 261. Its publications, 261. A special Entomological Commission to investigate the Rocky mountain locust, 261 . Valuable publications by it, 262. Resumjjtion of entomological investigations by the State of New York, 262. Establishment, under the "Hatch Bill," of Agricultural Experiment Stations, 262. Accelerated future progress promised, 262. Importance of entomological study, 262. Ridicule formerly bestowed upon it, 262. Its present recognition, 263. Its general prosecution, 263. .''ome considerations showing its import- ance: 1. The Secrecy of Insect Depredations, 263. Extent of unrecognized injuries to crops, 263. A long unknown attack on clover seed, 263. A hidden Coleophora attack on fruit, 263. An vinknown currant-stem girdler, 264. Insect pests that work only at night, 2C4. 2. The Small Size of Insects, 264. The paradox of "the smaller the insect the greater its capacity for harm," 264. Ravages of the microscopic grapevine Phylloxera 264. Number of acres of vineyards destroyed in France, 264. Appropriations made for its investigation, 264. Reward for an efficient remedy, 264. Insects can not be excluded from crops as domestic animals may be, 265. Not all insects are small, 265. Webster's definition of an insect, 265. Dr. Johnson's definition of net-work, 265. The common house- fly the average in size of the entire animal kingdom, 265. The vast world of living beings not seen by the unaided eye, 265. 3. Number OF Insects, 266. Ten times more numerous than the entire animal kingdom combined, 266. Ten thousand species of insects estimated in 118 Table of Coi^ tents. PAGE. the 17th century, 266. The number of catalogued species, 266. Lord Walsmgham"s estimate of three millions of species in the entire world, 266. An occasion when more Poduras could be seen at a glance than there are human beings on the globe, 266. Dr. Fitch's estimate of the number of plant-lice on a small cherry-tree, 266. Time required to count a million, 266. Nearly a year would be required to count the aphides on the one cherry-tree, 267. 4. Rapidity of Insect Propaga- tion, 267. The maximum of rapid increase found in the Aphides, 267. Their peculiar generation, 267. Thirteen generations of the hoi)- \ine aphis observed in one year, 267. The amazing number of the 13th brood if each individual should attain maturity, 267. The distance in space to which the brood would extend if marshalled in continuous line, 267. The point, even measured Tby the velocitj'^ of light, inconceivably distant, 267. The necessity of checks in nature to unrestricted development of any living form, 267. 5. The Voracity of Insects, 268. The larval stage one of incessant feeding, 268. Their only periods of rest, 268. Increase of weight of a flesh-feeding larva in twentj^-four hours, 268. Its parallel in the food of an infant, 268. Increase in weight of a caterpillar during its progress to maturity, 268. A corresponding weight of a man, 268. Can Insect Ravages be Prevented ? 268. Not entirely, but con- trolled, 268. Knowledge of the entire life-history of an insect will disclose some vulnerable point. 268. With present knowledge, insect depredations could be reduced one-half, 269. How to Meet our Insect Enemies, 269. What may be done by high culture, 269. The feeble plants succumb to attack, 269. Sickly or diseased vegetation invites its insect enemies, 269. Attracted thereto by its acute sense of smell, 269. A belief that in^ect pests are never drawn to healthy vege- tation, 269. Clean culture of great value, 269. Field and garden refuse a favorite retre it for many of the hibernating Hemiptera, 270. The benefit of destroying hibernating insects, 270. All worthless, dead vegetable matter should be burned or compusted in the autumn, 270. Importance of knowing our insect enemies, 270. Can not be success- fully met without a knowledge of who and what they are, 270. Does the study seem too formidable, 270. One hundred species may include all that it is important for the agriculturist to study, 270. Their com- mon and scientific names should be learned, 270. Pests that operate secretly, and known only by their effects, should be sought out, 270. Species falling in this category, 270. Indications of attack should be watched for, 270. Enlist childi*en in the study, 270. Interest attaching to the development of an egg into the perfect insect, 271. Encourage children to make a collection of insects, particularly of the injurious species, 272. Dr. I 'ackard's ' ' Entomology for Beginners " recommended , 272. Benefits to childi'en of the study, 272. Recent entomological publications should be procvired and studied, 272. The richness of the United States publications, 272. A large proportion of them distributed gratuitously, 272. Reports of the Entomologist of Table of Coi^ teats. 119 , PAGE. the U. S. Agricultural Department easilj' procurable, from the large number of copies issued, 1^73. Bulletins of the Entomological Com- mission, 273. "Insect Life," an instructive periodical, 273. Where the reports of Dr. Fitch may be obtained, 273. Reports of the State Entomologists of Missouri and Illinois, 278. Saunders "Insects Injurious to Fruits " an indispensable volume to fruit growers, 273. Comstock's " Introduction to Entomology"' of special value as an aid to classification, 273. Importance of a knowledge of insecticides, 274. Where information of them may be found, 274. The best insecticides in use, 274. Relative value of wet and dry insecticides, 274. Value of insecticides first shown in the use of Paris green against the Colorado potato beetle, 274. Again demonstrated in protecting from the apple- worm of the codling-moth, 274. In using insecticides, recognize the two classes of insects which take their food in a diflferent manner — by biting jaws or through a proboscis, 2T4. Entire families of beneficial insects which should be ])rotected, 275. Some of them named, 275. The importance of parasitic insects, 275. Ravages of the wheat-midge arrested by parasitic attack, 275. Orange culture in California seri- ously impaired by the scale insect, Icerya Purchasi, 275. Introduction and spread of this scale, 275. The parasites that controlled it in Aus- traha being collected and sent to California for colonizing and multi- plying them, 275. Importance of careful observation of insects, 275. Opportunity for this afforded by an agricultural life, 275. What to do with unfamiliar, and new forms, 276. Benefit that may result from an inquiry into their character and habits, 276. The labor attendant on a contest with insect pests should not cause its abandonment, 276. The insatiate greed and wastefulness of insects, 276. Necessity of opposing them, 276. Not sufficient to rest on the promise of "seed- time and harvest," 276. The force pxiinp with its insecticides should supi^lement prayer for the preservation of the " kindly fruits of the earth," 276. Means for i-esisting insect depredations within the reach of all, 276. Insects must be fought earnestly, 276. Productive crops with less labor, 276. Where may be found the solution of the problem "how to make the farm pay." It may be either failure or success, 276. Neglect of the study of insect lives and insect habits not to be longer tolerated, 276. (B) PUBLICATIONS OF THE ENTOMOLOGIST DURING 1891 278 The Sc^uash Bug:* Grain Weevil Infesting Mills: Protection from In.sect Injuries, 278. Bacon Beetle: Insectivorous Birds: Scale Insects: Bark Lice: A Blind Crustacean fi'om a Well, 279. Injurious Insect^: Quince-Tree Borer: Honey-Dew on Pear-Twigs: Arsenic and Honey- Experiments. 280. Entomology: How to Control the Hop Aphis: Apple-Tree Insects of Early Spring: Orange Leaf Trouble, 281. How to Kill the RoseBug: The Cermatia Centipede: The Apple- Worm : Wheat * The capitalization of the publicatioDS ig retained in this list. 120 Table of Contents. • PAGE. Insects: Wire-worms in Corn, 282. Destructive to Pears: Insect Pests: . Another Formidable Insect Pest: Melon and Strawbeiry Pests, 283. The Peach-Tree Borer: A Serious Danger: The Gartered Plume Moth: A New Onion Pest: New Strawberry Pest: Lady Bug and Cherry Aphis, 284. Beet Insects: Apple Aphis: The Pear-Tree Psylla: Insects Injuring Red Raspberries: Pine Beetle Injuring Linen. 285. Foes of the Kilmarnock Willow: The New Dairy- Pest: The Cow-Horn Fly in New York: Leaf -Eating Beetle: Elm-Leaf Beetle: Grape CurcuUo: Measur- ing Worm, 286. Rat-tail Larva: The Locust Mite: The Cecropia Caterpillar: An Interesting Caterpillar: Grapevine Leaf-Hopper: Extraordinary Flight of Moths, 287. The Squash Bug: A Destructive Potato Aphis: White Grubs: Sprayed Grapes are Harmless: The Pear Midge, Diplosis pyrivora in New York: On the Eye-Spotted Bud Moth in Western New York, 288. On Some of our Orgyias : Do Spiders Protect Fruit-trees from Aphides ?, 289 . (C) PUBLICATIONS OF THE ENTOMOLOGIST FOR 1875 AND 187G. . 290 Record of Collections of New York Heterocera for the year 1873: The New Apple Worm: A New Apple Worm: Insect on the Cabbage: Blister Beetles, 290 . Cocoons on Oats: Worm on Wheat: Insects on Potatoes: On Lyca?na neglecta Edw. : On Orthosia ralla Gr.-Rob. : Carpo- capsa Deshaiziana in Seed-vessels of Euphorbia, 291. Cucullia laitifica Lintner {n. s.): List of ( atocalas occurring in the State of New York: List of New Species of New York Lepidoptera published in 1873: On ('atocala pretiosa n. sp. : Destructive Caterpillar: Cabbage-eating Insect: The Grape-seed Fly: The New Carpet-bug Pest — Anthrenus sci-ophulariae, 292. Insects in Flour: Scale Insects: Bark-hce: Apple- tree Insects: Insectsof 1876 — 1, 293. Insects of 1876 — 11: Insect on Peach Trees: A Parasitic Insect: The Gooseberry Fruit Worm: Tree- Hoppers: An Eastern Grasshopper: Blistering Beetles: On a new species of Cossus, 294. The Carpet Bug: Grapevine Hog- Cater piUar: A Pernicious Corn Insect— The Indian Cetonia: Aphis in wheat: Pea Weevil, 295. (D) Contributions to the Department 296 Hymenoptera and Lepidoptera, 296. Diptcra, 297. Coleoptera, 298. Hemiptera, 299. Orthoptera, Neuroptera, Miscellanea, and Crustacea, 300. (E) Classified List of Insects Noticed in this Report 302 GENERAL INDEX 304 REPORT. Office of the State Entomologist, ) Albany, Naoemher 25, 1891. j To the Regents of the Unmersity of the State of New York : Gentlemen. — I have the honor of presenting to your board my Eighth Report on the Injurious and Other Insects of the State of New York, containing the results of observations and studies made by me during the present year. The year has not been prolific in insect life, either in the mul- tiplication of individuals of a species, or in the number of special pests. The abundance of insects varies greatly in different years. While this may be, and often is, controlled to a large extent bv the beneficent provision in nature of parasitism, through which certain classes of insects live wholly at the expense of others, it is still more largely due to meteorological conditions, varied in their nature and complex in their influences. Among these may be named drouth, excessive moisture, high temperature, severe cold, late and early frosts, depth of frost, winds, cold rains, continued rain, and absence or abundance of snow. Under such diverse and conflicting conditions, the aggregate of insect injury for any year can never be foretold for months in advance, although in individual cases, as in the chinch-bug and the western locust, predictions for the succeeding season have been made and verified. An excessive abundance of an insect pest in one year may be followed by its almost entire absence in the next, while a disastrous attack may suddenly be made upon a valuable crop by an insect long known but never before recognized as of the slightest economic importance. When to these fluctuations in insect life there is added con- tinually changing habits, wild food-plants deserted for cultiv^ated ones, gradual extension of geographic range, introduction by commerce from abroad, etc., etc., it is not surprising that each year should bring to the economic entomologist new subjects for 16 122 Forty-fifth Report on the State Museum. study, and in such rapid succession that hardly a tithe can be given proper investigation. The present year, even more markedly than the preceding, has been exempt from severe insect attacks upon the grain crops of the State. These agricultural staples have been almost entirely free from the destructive midges — the wheat-midge and the Ilessian-fiy, that in former years have often occasioned such serious losses ; and but little harm has been inflicted by the grain- aphis. The hop crop was not greatly injured by the lio]wine aphis, Phorodon htimuli. The potato beetle has been less abundant than usual, and in most localities where mention has been made of its presence, it was so late in making its appearance that less than ordinary effort was required for keeping it within control. In some of the Hudson river counties, injuries from it were first reported in the early part of July. In portions of Cattaraugus county it is said to have been unusually abundant during the month of July. With the large acreage devoted to fruit-growing in the State of New York, its annual extension, and the increasing care which is required in order to insure a good degree of protection from insect and fungus attack — it might naturally be expected that fruit insects should claim the foremost place among our insect foes. They have certainly taken such rank the present year, for among the hundreds of inquiries received of name, habits, remedies, etc., through personal application and a correspondence largely in excess of any former year, more than three-fourths have been of the insect depredators of orchards and of the smaller fruits. And to no inquiries have a more cordial welcome been given by your entomologist than to these, for, thanks to progress made in applied entomology, and the earnestness with which this useful science is being studied — in almost every instance there has been the ability of returning answer that could hardly fail of substantial benefit to the inquirer. Referring to a few of these fruit insect attacks : The apple- tree tent caterpillar, Clisiocampa Americana Harris, which has been unusually destructive for several years past, has not been the cause of as frequent complaint as in the preceding year. This may have resulted from the more general care that has been given to the collecting and burning of the eggs during the winter, Eighth Report of the State Entomologist. 123 and to destroying the nests or tents of the young caterpillars when they are first to be seen in the forks of the branches. Reports of the abundance of this caterpillar have been received from Westchester, Dutchess, Chemung, and Oswego counties. The apple-tree aphis, Aphis mali Fabr., while not very generally distributed, appeared in remarkable numbers in a few localities — in Oswego, Monroe, and Essex counties, and else- where. The season, however, was not propitious for its increase, and the aggregate amount of injury caused by it was not large. This insect may so easily be killed by kerosene emulsion spraying — either while in the Qgg or at the time of its hatching, that losses from it in the orchard deserve to be charged, in the ])rofit and loss account, to the item of carelessness. The apple-leaf Bucculatrix, BucculatTix pomifoliella Clemens, is extending its range, and is now to be found in nearly every county of the State. In Oswego, Wayne, Orleans, Monroe, Niagara, Livingston, and Ontario counties, its peculiar, white ribbed cocoons are so numerous as to readily attract the eye. Yet, little com- plaint has been made during the year of injury from it. Many of the cocoons seen upon the twigs are those of former years, and therefore tenantless. An effective parasitic attack has fortunately been made upon it which is largely reducing its numbers. Mr. Powell, Director of the Farmers' Institutes, reports that at a recent institute held at Sodus, Wayne county, on a small piece of apple-twig brought in, containing thirty of the cocoons, twenty-five had been destroyed by the parasite, as shown by a small hole eaten through one end of the cocoon. Another Tineid apple-tree depredator, ColeopJiora malivorella Riley, rare to the State (see 1st Report Ins. ]^. Y., page 163), was received in the early spring from Oswego and Wayne counties. While not yet abundant in l^ew York, it would not be a difficult task to prevent its becoming a serious pest. Although of slight economic importance, yet of considerable interest from its rarity and limited extent, is the occurrence during the autumn of the apple leaf-sewer, Phoxopteris miheculana (Clemens), in an orchard at Palmyra, Wayne county, N. Y. While in this orchard nearly one-half of the leaves have been neatly folded over near the midrib and the two edges fastened together to form the shelter for the hibernating larva, none of the other orchards in the vicinity show the presence of the insect. 124 Forty-fifth Report on the State Museum. Reference was made, and a brief notice given, in the Report for last year, to injuries to apple buds, blossoms, and leaves by the caterpillar of another Tortricid moth, Tmetocera ocellana (Schiff .), or the eye-spotted bud-moth — so named from an eye-like spot on its wings. The present year it has greath^ multiplied in the " apple-belt " of Western New York ; and its pernicious work in eating into the buds, and destroying the blossoms, and feeding on the tender foliage, has materially lessened the production of fruit in many localities. A large orchardist in Wayne county has written me that he has found it almost impossible to check, in the slightest degree, its ravages, and that it has done him more harm than all other apple pests combined. A full knowledge of its life- history, which we do not yet possess, will, it is hoped, reveal some simple and effective means by which it may be controlled. Of the comparatively small number of insects attacking the pear, and none of which have seriously interfered with its culti- vation, two insects have emerged from their obscurity during the present year, and have been the occasion of no little alarm in localities where they have abounded. Of these, the pear-tret: Psylla pyricola Foerst., — an aphis-like creature, has been quite destructive in orchards in Greene and Columbia counties on the Hudson river, through sucking the sap from the buds, leaves, and stems of the young fruit, and covering them and the twigs with an impervious coating of honey -dew. Later in the season a fungus develops upon this viscid excretion and blackens the twigs and terminal branches of the infested trees as if they had been painted. From an orchard in Columbia county where the crop gave promise of yielding 1,200 bushels of pears — as the result of the operations of this insect, only 400 bushels of indifferent fruit was gathered. The other of the two is the pear-midge, Diplosin i^yrivora Riley, which had not, hitherto, been reported in the State of Kew York — its only known locality in the United States being Meriden, Conn., where it is believed to have been introduced from France about fifteen years ago. The eggs of the parent midge are deposited in the blossom before they open, and the larva? there- from, to the number of twenty or more, burrow and feed within the young fruit wholly withdrawn from the reach of insecticidal applications. At maturity they escape from the fruit and drop Eighth Report of the State Entomoloois'i. 125 to the ground, where they bury for their transformation, to rea])- pear the following spring as the winged midge. The infested fruit, with its interior eaten away, soon falls from the tree. The insect, wherever observed— in France, England, and in this country, has shown a decided preference for some particular variety of pear, while attacking most of the others. With us, the Lawrence has l)een the attractive one, to the extent of its croj) proving almost an entire failure — at least nine-tenths of it having been destroyed both in Meriden, Conn., and at Catskill, N. Y. Notice of both of these insects will befoundin the following pages, Avhere the results of the studies made upon them are detailed. In my fifth report account is given of an attack on young pears at Rochester, N. Y., in which the fruit was com- pletely ruined by the gnarling, knotting, and deformation caused by the punctures and feeding of one of the plant-bugs, Lygus 2)ratensi8 (Linn.). A similar attack was brought to my notice during the early summer, occurring at South Byron, Genesee county, of a closely resembling species, Lygus invitus (Say). The operation of the insect was carefully watched, and interesting observations made upon it. Fortunately, these injuries, while quite general, are not often severe. In only one other instance were they deemed of sufficient importance to merit report — in Monroe county, where a crop of Seckels was badly gnarled in August from a second brood of the Lygus. Of other fruit insects of which complaint has been made, these may be noticed: The cherr}^ aphis, Myziis cerasi (Fabr.), caused considerable injury in St. Lawrence county in the early part of July. The plum aphis, Aphis pruni Fabr., abounded in some plum orchards at Schoharie, N, Y., affecting the foliage quite severely. The plum curculio was unusually harmful in parts of Albany county. It is rarely so injurious in the eastern part of the State that it is necessary to resort to " jarring " for its destruc- tion. At North Salem, Westchester county, the rose-bug, in the lat- ter part of June, is said to have almost ruined grapes and peaches, and somewhat later, vineyards in Jefferson and Oswego counties were reported as nearly destroyed by immense swarms of the same insect. According to an account received, the currant- worm, Nem,atus rihesii Scop., when threatening the destruction of the currant crop, at Millbrook, Dutchess county, early in June, was killed by heavy rains occurring at that time. 126 Forty- FIFTH Report on the State Museum. The cow-horn fly, Hoematohia serrata R. Desv., which has been noticed in a former report, has made its appearance in a few, but widely separated, localities in the State, and its speedy general distribution may therefore be looked for, unless the measures recommended for the prevention of its increase shall be generally adopted. A new onion pest attacked the onion crop at Canastota, in Cen- tral New York, during the month of June. It was a dark-colored caterpillar of over an inch in length, which fed on the plants above ground, and overran the large fields of onions in the muck lands about Canastota, feeding also on weeds and other vegeta- tion. It was at first thought to be the same cut- worm that in the vear 1885 was so exceedingly destructive in the extensive onion fields in Goshen and vicinity in Orange county. But its critical examination indicated it to be a different species, viz., Agrotis ypsilon (Rott.), and the subsequent rearing of the moth proved it to be that common insect, which had not been recognized before as an onion feeder. From Chenango county an estimate was received of twenty per cent injury to corn from cut-worms — the species not identified. Epilachna horealis (Fabr.), the northern lady-bug — quite exceptional in its family for its injurious habits, has again been destructive this year in its extraordinary numbers, to melon and squash vines upon Long Island. Most of the above, together with others not here referred to, are noticed in the body of the report. It gives me pleasure to report an increasing interest each year shown by the people of the State in the work of this Department. This is particularly marked on the part of the agricultural commu- nity, who are thoroughly awakened to the importance of protect- ing their crops from the steadily increasing hosts of their insect enemies. So frequent are the requests from farmers and fruit-, growers for information and for aid, that almost my entire time during the year has been occupied in the study of these successive attacks, and of the best methods for their control. While service rendered in this direction is beyond question quite as valuable as any other that may be given, still it is necessary that a certain amount of purely scientific work should accompany economic Eighth Report of tee State Entomologist. ]27 studies, if their published results are to be accepted as valuable scientific contributions. The collections made during the year were not as large as in some preceding years, owing to the shorter time that could be spared from office duties, and from a lesser abundance than usual of insect life. Particular attention was again given to the insects occurring in high altitudes in the Adirondack region, the fauna of which has been so im])erfectly explored. Several new and many valuable forms were obtained in Essex county, in the towns of North Elba, Wilmington, and Iveene, and life- histories, more or less complete, worked out. Contributions to the collections have been received from a larger number of donors, but aggregating less in the number of sjiecimens than reported in 1S9(>. As of special value ma}^ be particularized a package of alcoholic specimens of Lepidoptera from Mr, H. G* Dyar, of [New York city, mainly of rare larval forms, collected by him in the Yosemite valley, Cal., and described in scientific journals. The report herewith submitted contains, under the division of Injurious Insects, a somewhat full notice of the several species, after the manner in which I would be glad to present most of the insects embraced in these reports, i. e., in so general and full an account, drawn from their literature and combined with new observations as may afl'ord ample means for the arrest of their depredations, or their protection if desirable. But this, under the requirement for the completion of the report in readiness for |)rinting on the first of October, is impracticable. I have, there- fore, embodied under JSTotes on Various Insects, such briefer notices as seemed worthy of placing on record at the present time ; and under Insect Attacks : Their • Remedies and Pre- ventives, notices of several of the more interesting attacks of the year, together with approved remedies for some of che long and well known insect pests. The Appendix contains two addresses made before State boards of agriculture by the Entomologist, and a list of the principal publications of the Entomologist during the year, of which fifty-seven are named and brief summaries given ; also the usual list of the contributions to the collections of the department. ' 128 Forty-fifth Report on the State Museum. The additional room and cases for which arrangements are being made by your board for the use of the Entomologist, will remove the discomfort and hindrance of an overcrowded office, and permit of a more convenient and systematic arrangement of the library and the collections. AVith grateful acknowledgment of aid and courtesies extended. Respectfully submitted. J. A. LINTNER. INJURIOUS INSECTS. Synchlora glaucaria (Guenee"^. The Raspberry Geometer. (Ord. Lepidoptera: Fam. Geometbice.) Aplodes glaucaria Guenee: Hist. Nat. Ins.-Lepidop. , ix, 1857, p. 377. Aplodes ruhivora Riley: 1st Kept. Ins Mo., 1869, p. 139, pi. 2, fig. 25. Aplodes rubivora. Walsh-Riley: in Amer. Ent.,i, 1869, p. 247(ident. from. New Jersey). Aplodes ruhivora. Treat: in Amer. Ent.-Bot., ii, 1870, pp. 203-205, fig. 125. Eunemoria gracilaria Packard: in 5th Rept. Peab. Acad. Sci., 1873, p. 77. Synchlora albolineata Packard: in id. p. 75. Aplodes rubivora. Saunders: in Rept. Ent. Soc. Ont. for 1873. 1874, pp. 15, 16, fig. 10 (habits, etc.). Synchlora rubivoraria Packard: Mon. Geomet. Moths, 1876, p. 382, pi. 10, fig. 85. Synchlora rubivoraria. French: in Trans. III. Dept. Agr. , xv, 1877. App., p. 288; in 7th Rept. Ins. 111., 1878, p. 238 (brief description of larva and its habits); in Trans. 111. St. Horticul. Soc. for 1881, n. s., xv, p. 198 (brief description). Synchlora glaucaria (Guen.), Hulst: in Entomolog. Amer., ii, 1886, p. 141. Synchlora iiibivoraria. J^aunders: Ins. Inj. Fruits, 1889, p. 316, fig. 330 (brief account). Synchlora rubivora. Edwards (H.): Bull. 35, U. S. Nat. Mus., 1889, p. 102 (ref . to descr. early stages). Synchlora rubivora. Lintner: in Rural N. Yorker, L, 1891, p. 577 (larva and habits). Syncldora rubivora, Riley-Howard: in Insect Life, iv, 1891, p. 157 (in Jamaica). Synchlora glaucaria. Smith: List Lepidop. N. A., 1891, p. 57, no. 3460. A Strange-looking Caterpillar. That the two strange-looking caterpillars of this insect, received from New Haven, Conn., on the 27th of July, were the first of the kind that had come under my notice, would indicate not very acute powers of observation — unusual mimetic concealment in the larva — or that the insect is not of frequent occurrence in the State of New York. 17 130 FORTY-FIFTU REPORT ON THE StATE MuSEVM. The caterpillar and the moth that it i^roduces are represented in the accompanying figure, but the reader, if not an entomologist ma^- need to be told that the former is intended to be shown in the little irregular bunch adher ing to the berry at a, and looking as if it were merely a roll of vegetable material that had been carried about ill the winds before finding a temporary resting-p lace. Onl}^ upon examining care- fully could the outline of a larval form be made out within it, nor would it then be accepted as a living being, unless it could be seen to FigI.— The raspberry geometer, Synchlora glaucaria: ||i^][)gjj(J and commence tO a, the caterpillar; 6, one of its segoaents enlarged , , . to show the spines; c, the moth; d, wings enlarged, travel OVer the berry or tO (After Riley. ) feed UpOH it. The raspberry geometer, as it is popularly called, is a small "measuring-worm," "inch-worm," or "looper" — names that are borrowed from the peculiar mode of progression in the family of Geonietridm to which it belongs, the caterpillars of which travel in a series of loops, as if surveying or measuring land. Supported on the terminal legs and extending the body to the utmost, they grasp the twig or leaf, and bring forward the hinder legs in contact with the front. The intermediate portions of the body which are unprovided with the legs that are present in most other families, are curved upward b}' the movement in the form of the capital letter omega in the Greek alphabet. Concealment or Mimicry. While many of the geometers when at rest extend their body upward fi'om the branch in a straight line, counterfeiting almost exactly a twig, this one rests upon the berry in a close loop. When motionless in this position, no one would suspect it of being a living animal form. Its concealment is made almost perfect by the bits of vegetable material within which it hides itself. From it» body a number of spines project, as shown in one of its enlarged segments at b in the figure. To these and at other points, it fastens the anthers of the raspberry blossoms and other bits of vegetation so thickly as to almost conceal its true form. It is strange that the anthers should be Eighth Report of the State Bnto^wlogist. 131 specially chosen for this purpose, but the fact has been stated by several writers, and the entire covering of the two received by me, consisted of these organs. So perfect is the concealment of the caterpillar or its mimicry of a blighted blossom, that it might be supposed that the immunity from its natural enemies which it must secure in this manner would promote its multiplication and make it a quite common insect; but on the other hand, its disguise might easily, before it had attained a conspicuous size, permit of its being swallowed unsuspectingly with the berry. Indeed, a writer has remarked:* "The lovers of these most exquisite fruits, the raspberry and the blackberry, are often greatly disgusted by the discovery of the fact that instead of the delicious berry which they expected to enjoy, they are munching the small caterpillar under consideration." The Caterpillar Described. The caterpillar has been described by Professor Riley as follows : Average length, 0.80 inch. Color light yellowish-gray, darker just behind each joint, and very minutely shagreened all over. On each segment a prominent pointed straight projection on each side of the dorsum, and several minor warts and prickles below. Two very slightly raised longitudinal lighter lines along the dorsum between the prominent prickles. Ten legs. The above description, although brief, is probably all that will be needed for its identification, in consideration of its peculiar appearance and habits above given and illustrated. The Moth. The moth is a delicate creature, of about a half inch expanse of wings, of a pale green color, having both pairs of wings traversed by two whitish cross bands. More minutely described, to distinguish it from allied species: Pea-green; a white stripe between the antenna?, which are also white, and beneath pale testaceous; palpi and legs white; front and pectus green; a green stripe on the fore trochanters. Palpi very long, extending out nearly twice the length of the head, greenish or reddish at the tip. Fore- wings with, the costal edge white; a basal curved line, slightly dentate on the venules. Discal dot very linear, pale, obscure. Outer white line parallel with the outer edge, dentate on the venules; edge with white dots on the venules; fringe pale green. Secondaries with a much curved basal white line, a linear, small, white discal dot; outer line very dentate on the venules, much more so than the same line on fore wings; fringe pale, edge with white dots on ends of venules. Beneath, fore-wings testaceous, whitish on costal edge; fringe white; * Ist Report on the Insects of Missouri, 1869, p. 139. 132 Forty-fifth Report on the State Museum. anterior half of wings greenish, posterior [half] whitish. Secondaries whitish; the line appears, though very faintly. Abdomen green, streaked mesially with whitish. Length of body, J, 0.33; ?, 0.43. Expanse of wings, 0.65 — 1.08. {Packard.) Its Natural History. The early life-history of the raspberry geometer is not known. Its eggs are probably deposited on the leaves of the raspberry and the blackberry near the blossom buds in May or June, according to the latitude, and the caterpillar feeds at first upon the tender leaves, but as soon as the berries begin to ripen they constitute its entire food. At or about the time of the ripening of the berries the caterpillar having reached maturity, it selects a suitable spot upon a leaf or twig where it forms a slight cocoon for its pupation. A few daj'^s only are passed in this stage when the moth makes its appearance — in the latter part of June in Texas, in July in Illinois, in August and September in New York and New England. One of the two caterpillars received from New Haven either escaped from its box or was devoured by its associate; the other, after having fed for nearly two weeks upon raspberries, commenced making its cocoon on August 8th, and had completed it on the following day. Two days later (11th) the pupa could be seen through the thin meshes of the cocoon, of a pale brown color, with dai'ker spots and lines, and about one-third of an inch in length. After a two weeks' pupation the moth was found in the box on the 23d of August. A specimen in my collection beai's date of August 3, 1873, taken at Schoharie, N. Y., and another from the collection of the late W. W. Hill, "July, 1871, Lewis Co., N. Y." The Cocoon. The inclosure for its pupation hardly deserves the name of a cocoon as it consisted only of about a dozen pieces of varying sizes taken from the sepals of the calyx of the berry, and arranged over its body and connected by some coarse threads, so few in number that they barely sufficed to hold the pieces together. The pupa was fastened within by its terminal tip caught in some silken threads. Abundance and Distribution. The principal interest pertaining to this insect lies in the possibility of its not being detected when the berries to which it is attached are eaten; but, in that event, no harm will ensue, or even a nauseous taste Eighth Report of the State Entomologist. 133 be experienced, such as attends the presence of one or two of the minute plant-bugs that so frequently infest the raspberry. It has never been known to occur in such numbers as to mar the fruit, although, according to Professor Riley, it has been somewhat numerous in Illinois. It has a large distribution over the United States, being reported by Dr. Packard from Maine,. Massachusetts, New York, New Jersey, Missouri, Kansas, Texas, and Alabama. An example of appar- ently this species occurred among collections made by Mr. T. D. A. Cockerell, in Jamaica, West Indies. Bucculatrix Canadensisella (Chamb.). The Birch-leaf Bucculatrix. (Ord. Lepidoptkka: Fam. Tineid.e.) Chambers: in Canad. Entomol., vii, 1875, p. 146 (imago) ; in U.S. Geolog.-Geo- graph. Surv., iv, 1875, p. 133 (citation). Lintner: " 3d Rept. Ins. N. Y.," in 40th Kept. N. Y. St. Mus. N. H., 1887, p. 135. Packard: 5th Rept. U. S. Entomolog. Oommis., 1890, p. 507 (larva and moth), p. 508 (Tineid larva) ; in Insect Life, v, 1892, pp. 14-16, fig. 3 (occur- rence in Rhode Island). Riley-Howard: in Insect Life, v, 1892, p. 16, fig. 3 (in New York, Mass., and parasitic attack). Fletcher: in Rept. Min. Agr. on Exper. Farms for 1893, pp. 156-158, fig. 14; same in Rept. Ent.-Bot , 1892, pp. 14-16, fig. 14 (general account). Mrs. H. D. Graves, of Ausable Forks, N. Y., to whom many obliga- tions are due for interesting and valuable observations made upon the insect pests of Northern New York, has kindly communicated the following notes upon recent operations of the above-named insect, under date of September 8, 1891 : The Insect at Ausable Forks. I send herewith some birch leaves and worms, illustrating the con- dition of all the birches in this vicinity. 1 he leaves sent are from a cut-leaf birch on ni}^ lawn. Lindens, maples, and dogwood standing near are entirely free from attack. In a ride of thirteen miles that I took through ttie country yesterday, all the birches could be dis- tinguished at a long distance by their burned looking foliage, while all other trees were green and fresh. About three weeks ago I first noticed the falling of the leaves from my tree, but being busily occupied at the time I did not examme into the cause, and now the tree is spoiled for this year. I do not believe that there is a perfect leaf upon it. 134 Forty-fifth Report on the State Museum. The Insect at Scottsville. The attack was recognized as identical with one that had come under my notice in the summer of 1886, through a letter and examples of the eaten foliage of a yellow birch, JBetula lutea, and the infesting insect, received from Mr, Shelby Reed, of Scottsville, Moni'oe county, N. Y., as was briefly noticed in my " Third Report," as above cited, Mr. Reed, writing September 14th, stated : " Trees infested with the insect have a brown and scorched appearance, and light comes down through the thickest of the foliage as through a softened skylight." The leaves sent for showing the injury to the foliage caused by the insect, had very nearly all of the green parenchymal matter eaten away, leaving only the transparent epidermis of one side as a thin transparent film. In a few instances only, had this film been broken or pierced into holes of micro- scopic size. It was interesting to see how thorough had been the work of dissecting out the parenchyma from between the epidermal reticulations. Only here and there had a cell escaped — all of them united, over the entire surface of some of the leaves, not exceeding a square quarter-inch. It was the most remarkable and beautiful leaf dissection that had ever come under my ob- servation, far exceeding in delicacy any of the " skeleton- . J izing " which we are often Fig. 2.— BucculatrixCanadhnsisella: «, skeletonized ° leaf; h, molting cocoon; c. larva; d, head of larva; called upon tO admire. That it e, anal segments of larva; /, same of pupa; <;, cocoon ^^^^^^ ^^^^ ^^^^ executed by with extruded pupa skin; ?i, moth — all enlarged. •' (From Insect Life.) SO Small a larva, seemed sur- prising, until it was learned from Mr. Reed that it was the concerted work of large numbers — forty-eight of the little caterpillars having been counted by him on a single leaf. The leaves of the cut leaf birch received from Ausable Forks, were less eaten than the above — only about one-half, on an average, of the parenchymal matter having been removed. It is probable that the native birches, in their ''burned looking" foliage, had been more seriously affected. At a, in Figure 2, a partly skeletonized leaf is shown. Eighth Report of the State Entomologist. ]35 The Caterpillar. The fuli-grown caterpillar measures less than a quarter of an inch in length —more exactly, from 0.18 to 0,22 of an inch. It is of a slender form, tapering considerably at each extremity, and with deep incisures between the rounded segments. The head is long, projecting, slightly bilobed, of a pale brown color, with the ocelli and mandibles black; width of head about half that of the first segment, and one-fourth or less, of the central segments. The body is dull pale green, sometimes of a yellowish cast, having short hairs on the setiferous spots, and some longer ones elsewhere, particularly at the ex- Fioj-Catenjuiar^of the w^^^ tremities, as shown at c in Figure 2, but omitted tmx canadensisella, side ' . . vie^ and dorsal view (orlg- by the engraver in Figure 3. The terminal pair inai.) of prolegs are projected behind: the other prolegs are so short that the apodal segments also have the appearance of being employed for locomotion. The caterpillar walks slowly, and when disturbed, drops from the leaf and hangs suspended by its thread. If brushed from the leaf to the table or a smooth surface, it twists vigoroush^ about, in violent contortions, as if to frighten away, or to escape from, its enemies. Its Molting Cocoon. In addition to the two New York localities mentioned, the insect is also known to occur in Alban}'. After its reception from Ausable Forks, in Essex county, the birches in Washington Park were examined for it. Leaves eaten after the peculiar manner of the larva', to a moderate extent, were found, but none of the ribbed cocoons. On a number of the leaves were small rounded silken patches, which were identified as the retreats made by the larv;v during their molting periods — apparently in two sizes. They had been described by Dr- Packard, in the 5th Report of the U. S. Entomological v ommission, as " Orbicular, 2 to 3 mm. in diameter, of white silk, inclosing the larva curled up within," and referred to an " unknown Tineid." Different names have been giv* n to these intei'esting objects by recent writers, as cocoonets, cocoons, and pseudo-cocoons. They are, strictly speaking, cocoons, but as it might be confusing to refer to them by this name, any misapprehension would be prevented by calling them " molting cocoons," as suggested by Mr. Brunn in the first description of the structure. Their manner of construction, entrance into them, and occupancy will probably be found to agree with that of the larva of Eucculatrix pomifoliella, minutely given by Mr. A. E. Brunn, in the Second Report of the Department of Entomology of the Cornell 136 Forty-fifth Report on the State MusEmi. University Experiment Station, 1883, p. 158. As the publication is not accessible to many, the description is quoted : When the larva has made a mine from one-half to three- fourths inch long, which it does in from four to five days, it eats its way out through the upper surface ; then somewhere on the upper surface of the leaf it weaves a circular silken covering about one-twelfth inch in diameter. Stretched out on this network, the larva, which is now 2.6 mm. long, makes a small hole in it near its edge, then, as one would turn a somer- sault, the larva puts its head into this hole and draws its body after. Arriving inside the "molting cocoon," as it may be termed, on its back and doubled in the shape of a horseshoe, the larva is then ready to strengthen the cocoon and close the opening which it made in enter- ing. The larva^ make these cocoons in from fifteen to thirty minutes, and usually wnthin two hours after leaving the mine. * * * Having molted, the larv;e leave their cast-off skins in the molting cocoons and cut their way out; they remain in these cocoons in most cases less than twenty-four hours. The molting cocoon is represented at b. Figure 2, showing its peculiar central spot, or depression, or both. The Cocoon. The cocoon is a pretty little object with its five, or sometimes six, sharj) ridges,* of which four are seen in a dorsal view, crossing over its entire length from one end to the other in parallel lines and uninterrupted except as they may be broken near one end where the cocoon is joined in its construction. Tlie base is flat; the ends rounded; color, yellow- FiG. 4-Cocoon of the grcen. Length, 0.15 to 0.19 inch; breadth, 0.05 birch-leaf Bucculatrix, • , BUCCOLATRIX CaNADEN- mCU. sisklla; side view and t. • •, j'«? . • £ j.i^ a. c from above (original). it IS quitc diflerent in appearance from that oi ^^'7)o»^^yo^^W^rt Clem., in several particulars, viz.: in its yel- low-green color, instead of white; its sharper and more distinct ribs; its rounded in- stead of pointed ends; its base flattened to nearly its broadest diameter in place of being strongly contracted at the sides; its ridges distinct to the extreme tips instead of uniting near them; and the more conspicuous joining of the cocoon near one end coons are -j—i Co- ^IQ- 5.— Apple-leaf Bucculatrix, Bdcculatrix pomi- foliella; a, piece of twig covered with cocoons; 6, represented in cocoon enlarged: c, the moth, enlarged. *Mr. Fletcher (loc. cit.) gives "about eight prominent ridges," and Dr. Packard, "eight sharp, high ridges." I never saw them with so many. Eighth Report of the Si ate Entomologist. 137 Figure s 2ff and 4, Those of Bucculatrix poTnifoliella are shown, for comparison at a and h in Figure 5. The cocoons have only been observed upon the leaves, but as they are seemingly too few for such an abundant larval presence, it is prob- able that many of them are made on leaves that have fallen to the ground, or possibly, on or beneath the bark of the trunk, or even on adjoining trees and shrubs, as some of the species of Bucculatrix are known to have a fondness for traveling. None were found on the small twigs that have been sent me with the leaves. The construction of the cocoon is an interesting operation to watch. It differs in method from that with which we are familiar in many of the Bombycid and other moths "where the caterpillar spins its thread around it, and gradually hides itself from view. In its earl}^ life the birch-leaf caterpillar had been an outside builder, as will be noticed hereafter, and its habit is not abandoned in this its mature stage. The cocoon is apparently commenced by the caterpillar marking out with a few threads laid upon the surface of the leaf the outline of one end. From this, as the base of operations, the ribbed walls are built up in the following manner: Its thread is fastened at one end of the basal line, and then carried over in the required curve and at a slight elevation to the other side where it is fastened to the base. The thread continues to be carried from one side to the other, but not in single curves made by one sweep of the larval head. If closely noticed through a lens (as these observations were made), the head will be seen moving in a series of concave curves, rest- ing momentarily at the four or five points where the ribs are being formed. Thread after thread is thus rapidly carried over; the base is gradually widened as it approaches the middle part; the short curved sweeps of the larval head build in the ribs and the depressed portion between them, while each thread is applied, and apparently adheres closel}^, to the preceding. This is continued without cessation, and as the building progresses the caterpillar gradually moves backward before its advance. Whether its eyes or the length of its head serves as the only measure for the diameler of the cocoon is not known. Possibly its body may be used as a guide after the manner of the caterpillar of a Limenitis butterll}^ which repeatedly during the construction of its hibernaculutn creeps within it as if to test the dimensions of the silken- lined leaf-tube within which, with entrance left unclosed, it is destined to pass the winter. When the cocoon is about three-fourths completed, a new procedure ensues: the caterpillar arrests its work, turns itself about, and moves 18 138 Forty-fifth Report on tbe State Museum. backward within its walls — its head and two or three of its segments projecting. The other end is now commenced, and is extended back- ward on the same plan and in the same manner as before, xintil the two portions are united. Sometimes the joining is so accurately made that it can hardly be detected; the ridges are in exact line and only a slight elevation or other irregularity is visible. In others the ridges, instead of aligning, are interposed at the suture, and a perceptible hump marks the place. For a short time longer the caterpillar may be seen through the translucent walls, actively twisting its front segments backward and forward, as additional threads are being thrown over the joining to unite the two portions, and the strikingly ingenious piece of insect architecture is finished. Since the above was written my attention has been drawn to the detailed account given by Mr, Chambers in the Canadian Entomolo- gist, vol. xiv, 1882, pp. 157-160, of the building of the cocoon of another species of Buccidatri:^, viz., B. amhrosimfoliella. It differs materially from that above described, in that "a reticulated frame- work " is at first constructed (of which a diagram is given by Mr. Chambers), and " the cocoon proper " afterward spun within it. No specimens of the cocoons of £. Canadensisella are at hand which would serve to shoAv if they also are double, but I would expect to find them single — simjily reinforced with additional threads within. 1 I am unable to reconcile what I saw, or at least thought that I saw, in the construction of the cocoon of B. Canadensisella as above described, with Mr. Fletcher's account of the same operation, given in his Annual Report for 1892 [loc. cit.): "A mat was first spun on the surface of the leaf, then the foundations of the ribs were begun. Little by little they were continued, and the meshes of an open net- work stretched between them, the caterpillar all the while retreating backwards as the structure advanced." There was certainly no " open network " in the cocoons that my caterpillars built before my eyes. Strange that they should have done so differently from what they ought to have done " according to the books." Mr. Chambers, who was a close student of the habits of Bucculatrix larvu', has stated: "All other known species of the genus, save one, make these ribbed cocoons, and to do so, they must work much as this \canbros((ifolitlki\ does." The building of the cocoon of the common B. pomifoliella has probably never been observed, as no account of it has been given to us. Eighth Hep out of tee State EiStomologist. 139 The Moth. The moth is so well shown in Figure 2, that it can hardly fail of recognition when the comparison is made, but, as of possible service to the student, the original description by Mr. Chambers is transcribed: Head white; tuft tipped with dark reddish-brown, and the face faintly tinged with purplish fuscous. Upper surface of the thorax brown margined by white. Base of the fore-wings white, followed by an oblique brown fascia, which is nearest the base on the costal margin, and is followed by an oblique parallel white fascia; all of these are placed before the middle, and are followed by a large brown patch which occu- pies the entire wing to the cilia^ [cilia], except that it contains a white spot on the middle of the costal margin ; the brown patch is margined before on the dorsal margin of the wing by a small tuft of raised brown scahs; at the beginning of the dorsal cilia^ is a white spot placed a little before, but becomes almost confluent with a Ion;, er white costal streak; behind these streaks to the apex of the wing is pale brown, with a darker velvety brown apical spot; ciline pale yellowish, with a dark brown hinder marginal line before their middle, not extending to the costal cilite. Expanse of wings, three-eighths of an inch. — From. Canada. Mr. Fletcher's description of the fore-wings will give a better idea of their general appearance : Wings crossed with silvery white bars; three of these run from the outer edge about half way across the wings obliquely toward the apex, and there are two shorter subtriangular blotches on the inner margin of each fore-wing. These latter, when the wings are closed, form two white doi'sal saddles, the anterior of which is slightly the larger and is followed closely by a tuft of raised black scales. At the extremity of the fore-wings are also several raised black scales, a few of which are- separated into an apical spot by an irregular narrow white baud. The cilia of the fringes are pale brown. Life-history and Habits. The life-history of this insect is as yet unknown. Neither the eggs- of the moth or the mining operations of the larvje have been observed. The following seems to be about all that is kno the original description is quite imperfect, Dr. Riley was advised by the European authorities to redescribe and rename it, which he has accordingly done, designating it as Diplosis pyri'oora. The name was subsequently accepted by R. H. Meade and other eminent dipterologists in Europe. Efforts for Its Extermination at Meriden. Realizing the importance of suppressing so destructive a fruit pest while confined in its limited locality, the Messrs. Coe resorted to the heroic treatment of picking off their entire crop of pears in 1883, it being an " off year" when the yield was comparatively light, and burning it with the contained larvae. But before the entire completion of the task a heavy rain set in, which caused the infested fruit to break open and rel<^ase the inmates. When the work was resumed it proved to be too late, as all of the larv;e had deserted the fruit and entered the ground. It was also discovered that a neighboring orchard had become infested. But for these two unfortunate circumstances — or if the effort had been made a little more timely, there is every proba- bilit}' that the insect might have been exterminated, and losses to our fruit growers which may run into the millions of dollars might have been prevented. It was hoped that the spread of the insect had been largely arrested by the above means, as nothing had been heard of its presence in other -localities for the ensuing six years. 144 Forty- FIFTH Ixeport on the State Museum. Fig. 7 — Section of a pear con- taining the larvae, and an un- Discovered at Catskill, N. Y. During the last week in May of the present year (1891), some young pears were sent to me from Catskill, N, Y., with the inquiry of the name of the attacking insect. The nature of the inquiry was not evident at the first inspection, as the fruit was fair, unbroken, and showed no external injury — its j)eculiar deformation being unnoticed. But upon cutting into one the interior Avas found to be occupied hy a large company of active little bodies which, wriggling out and dropping to the table, commenced to give evidence of their sharing in the saltatory powers belonging to many of the Cecidomyicis and particularly to the genus IHplosis, by throwing them- selves from a small box in which some had been placed to a distance of two inches and! more in a single bound. The attack upon the fruit was at once recognized as that of the- infested one for comparison • j 7-> • 7 • • „ of forms (original). Y>^SiY m\^ge, BiploSlS J^yriVOra. In a visit to Catskill immediately following this discovery, all the orchards that could be examined during the day, within a radius of two miles, were found badly infested with the insect, and its presence ini other orchards more distant was i-eported. In those of Mr. Theodore A. Cole, where it was first detected, the attack was the most severe- There were here many old and quite large Lawrence pear-trees, heavily laden Avith fruit, but an examination showed that at the least ninety jjer cent of the fruit was filled with the full-grown midge larvte. Other varieties were infested in a less degree, among which were the Vicar, Anjou, Seckel, Bartlett, and Buerre Bosc. Mr. Cole had observed the attack in his orchards four A^ears previous (in 1887); in 1889 the Lawrences were almost entirely destroyed by it. He had neglected calling attention to it until the present season, thinking that it was a well-known trouble which could not be prevented. In passing over the orchards and obsei'ving so large a proportion of the fruit infested, Mr. Cole asked — " how can this condition folloAv a year (1890) in which I had no pears: where did the midge breed?" This could not be answered until, upon coming to some Buerre Bosc trees Avhicli were now for the first time found to contain the larvje,. Mr. Cole recalled the fact that this variety had borne some fruit the preceding year and was the only one that had done so. How the raidge had been carried over " a no pear year " was at once satisfac- Eighth Report of the State Entomologist. 145 torily explained. Had there been absolutely no fruit in which the larv?e could have fed within reach of the flight of the parent midge at the time for its oviposition, the species would probably have been exterminated within that locality, for it is not known to occur in any other fruit than the pear. It is possible, however, that if there should be in any year no pear-blossoms to receive the eggs, that the midge might resort to apple trees for oviposition, and thus originate a new food-plant for its perpetuation. This consideration may have a bearing in the direction of methods for the extermination of the pest. Deformation of the Infested Fruit. The presence of the larvfe within the fruit causes it to enlarge and swell out irregularly, assuming vai'ious forms, — the most marked and striking of which are represented in the accompanying illustration. f'ig. 8 — Young pears deformed by the pear- midge larvae — natural size. (Original ) The more usual form observed about the 1st of June when the larvae have attained maturity, is that in which the ujDper three-fourths of the pear has become enlarged and swollen out into irregular protuberances, and showing an abnormal color, quite in contrast with that of the seemingly contracted base. So conspicuous are these features that every infested pear on a tree can be recognized without difficulty. Any that are without distortion and of normal shape, if cut op<;n, would be found entirely free from attack. 19 146 FORTT-FIFTH REPORT ON THE StATE MuSEUM, Much earlier than this, according to Mr. Cole, the midg^id fruit can be readily detected — more easily, if possible, than at a later period ; for soon after the falling of the blossoms, the operations of the larvae cause a marked enlargement of the forming fruit, which is presumably (although it was not so stated) acconipanied with more or less distortion. On cutting open the fruit, a large central cavity is see.i within it, occupying most of its interior, quite irregular in form and often made up of smaller cavities separated by thin walls or by the remains of the core. Among these the larv;e are distributed, instead of being collected in one mass. Repeatedly, when all had been removed that were at first visible, sometimes as many more could be extracted or would creep out from side cavities. The average number of larvse occurring in the Catskill fruit may be stated at twenty. In one pear thirty -four were counted. How the Larvag Leave the Fruit. The infested fruit does not fall from the tree. The first rain of several hours' duration that may occur about the 1st of June causes the fruit to crack opeu, sometimes at different points, but often in an interrupted line around the enlarged portion near the base. Through these gaping openings the larvoe, now mature, find easy egress, when they at once emerge and drop to the ground. Or the rain, under different conditions of the fruit, may cause it to soften, blacken and decay in spots, and these Avould serve as outlets for the larvae. So eager do they seem to be for their escape that a rain of twenty-four hours' duration would be followed by the emergence of considerably the greater part of them within a day thereafter. Wet, and its attendant breaking down of the structure of the pear, seems indispensible for freeing the larvae and their subsequent develop- ment. I have not known them to emerge through the calyx end, and do not believe that they ever do so. Some infested fruit picked on the 25th of May before rain had fallen and brought to my oMce, gradually dried up unbroken and blackened, without releasing a single one of its occupants. On tiie 15th of June living larvse only were contained in the dried fruit. On the 25th of August a few of the larvae were still alive, but most had died; at the present date, October 10th, all that I examine are dead and hardened. Tha fruit, having given out its larv* as above described, continues to hang upon the tree for a while thereafter, but in a few^ days shrinks, blackens, and falls to the ground. Under date of June 10th Mi\ Cole reported that nearly all of the raidged pears had, at that time, fallen. Eighth Report of the State Entomologist. 147 The Larva Described. The following description is extracted from Dr. Riley's Entomolog- ical Report for the year 1885, together with the accompanying figures: Length 4'"°* to 4.5™™. Color, pale yellow very faintly reticidated. Breastbone pale brownish, its apex broadly bilobed. (In the figure it is represented as rather too long for its width.) Body (thirteen joints and subjoint) fourteen-jointed, exclusive of the head. Antenna two- jointed. Anal subjoint much narrower laterally than the penultimate, slightly concave, the concavity beset with six (three each side) small, fleshy tubercles (the two middle ones are not shown in the figure), of which the second one on each side is stoutest, those on the ex- ternal angles bearing each a short spine. ^^^ Spiracles normally placed and mounted on tubercles. Surface polished and The pear-tnidgre: a, dorsal view of th larva; b, side view; c, head and front seg:ments; d, last se2r'"«'nt; e, "breast- bone "— all much enlarged. Entering the Ground for Pupation. Pears received from Catskill, thi'ough the kindness of Mr. Cole, on the 30th of May, after they had been exposed to a heavy rain and were cracking open freely, were already giving out their larvae very abundantly. About five hundred of these were given common earth in a flower pot, which they speedily entered. The pot was buried in my garden, with its top at the surface of the ground, where it will be left until the coming spring under conditions natural to the insect. A still larger number were given, on June 8th, damp molding sand for burial, as offering facilities for their occasional observation. A jar of these containing two hundred was carefully examined a week thereafter (June 15th), when a single cocoon was found at the depth of a half- inch, several at one inch, a number at one inch and a half, thence to two inches a large number, and to two and one-half inches quite as many; below this none were found. All but four of the larvse had made cocoons, and these had evidently received some harm. It may be inferred from the above that in ordinary soil, not as penetrable as the molding sand, the larvae ordinarily bury at a depth of between one and two inches. A cocoon opened July 6th contained the larva with a thin pellicle attached to its terminal end which had apparently been cast off by it. Pupation. The pupation is within an oval cocoon, composed (in the above) of grains of the sand united and lined with yellowish silk, somewhat flat- 148 Forty- FIFTH Report on the State Museum. tenetJ, with its longest diameter exceeding its transverse by about one- half. The cocoons differ perceptibly in size, but average one-tenth of an inch in length, — ten taken at random measuring just one inch. Opening a few of the cocoons on October 12th, somewhat more than half had changed to pupne. These agreed with the descrip- tion given of this stage by Dr. Riley in his Report for 1885 [loc. cit.), but diffei'ed in the examples examined from his figure (see c in figure) in that the leg-cases reached quite to the tip of the abdomen, even when straightly extended, instead of only to its sixth segment. The larvop that were planted out of doors have not been examined, but it is probable that they will hibernate in the larval stage. At Washington, the winged midge was obtained from examples bred in the warmer temperature of the vivarium during the months of Jan- uary and February,* while others, presumably under natural exposure, emerged from April 10th to 13th. Their usual time of appearance is probably coincident with the putting out of the blossom buds of the pear. The Winged Insect. The general appearance of the midge is represented in Figure 6. Its more conspicuous features, borrowed from Dr. Riley's detailed descrip- tion, are these: The male. Average length, one- tenth inch; general color, dark gray or black; eyes, deep velvety black; antennae, one- fifth longer than the body, black, with twenty-six globose joints; thorax, dark dull gray or black, with two diverging rather indistinct gvay stripes, and beset with long . , ^-x yellowish hairs; wings, slightly smoky, darker X^NjCT/ '^^i^^*^ ^^^^ covered with a sparse black pubescence, 6^^^^^^ and having a black fringe; halteres, or balancers, ^maie%';S-''Se,Diplo' pale yellow; legs, dusky with a yellowish tinge; RUeyo'''''"''^' ^^"®'' abdomen, dark gray, almost black dorsally, ter- minating in a pair of two-jointed claspers, shown in enlargement in Figure 10, in which b ai'e the claspers and c the intromittent organ. Female, 0.13 in. long, exclusive of ovipositor, which extended is as long as the abdomen. Antennae, foui'teen-jointed, slightly longer than the head and thorax together. General color somewhj;,t lighter than the male. The Egg'-laying'. I know nothing, personally, of the oviposition of the midge, nor have I knowledge of any other record of it than what is based on Schmid- ♦Schmidberger had it emerge as early as the 38th of December. EiGETH Report of tee State Entomologist. 149 herger's observations as recorded of Diplosis nigra in loc. cit. This is so circumstantial, that it seems deserving of acceptance as having been carefully observed by him, and conclusive as to the time and manner of the egg-deposit. That the eggs are deposited in the blossom, rather than in the young fruit as believed by some, * finds seeming con- firmation in the fact stated by Mr. Cole, that upon the falling of the blossom petals and the first forming of the fruit, the presence of the larvae may be already detected in the abnormal growth. Schmidberger's account is as follows: When the blossom-buds of the pear-tree were so far developed that in the single blossoms a petal showed itself between the segments of the calyx, I found the first gall-midge in the act of laying its eggs in the blossom; this was on the 12th of April. It had fixed itself almost perpendicularly in the middle of a single blossom, and having pierced the petal through with its long ovipositor, it laid its eggs on the anthers of the slill closed blossom. The female was about seven and a half minutes in laying her eggs. When she had flown away, I cut the pierced bud in two, and found the eggs lying in a heap one upon another on the anthers. They were white, longish, on one side pointed and transparent, and from ten to twelve in number. I after- wards found several midges engaged in laying their eggs, as late as the 18th of April, from which day they ceased to appear in the garden. I also saw a gall-midge on the side of a blossom with its ovipositor inserted in it, so that they do not merely pierce the petals but the calyx also. I even saw one, which having been somewhat long in laying its eggs, could not draw out the ovipositor from the blossom; the cause of which I conceived to be, that the wound had begun to close during the operation, and the ovipositor was therebj^ held, Schmidberger further states that the eggs are quickly hatched in warm weather, for on the fourth day after the deposit he had found the small larvae on the embryo blossom. They bore into it near the calyx, and before the blossom is expanded, they descend to the core, so as not to be exposed to the rays of the sun. They separate at the coi'e and begin to devour on all sides. Distribution of the Midge. The midge still continues its work at Meriden, Conn., where it was first detected, but with less severity than at first. Mr. Coe has written to me recently that it has this year taken one-half of his Lawrence and Dana pears on about three hundred trees. When first discovered at Catskill, I thought it probable that it had been brought in trees purchased in Meriden, but was assured that none had been introduced from that locality or imported from abroad. * See Professor J. B. Smith, in Insect Life, iv, 1891, p. 45. 150 FORTT-FIFTR REPORT ON TEE StATE MuSEUM. In a visit made to the pear-orchards of Mr. George T. Powell at Ghent, N. Y., on June 8th, the work of the midge was seen, although less severe than at Catskill, but occurring in a larger number of varieties of the fruit. At this date, all the fruit attacked had passed its knobby, swollen, gall- like stage, and had become shriveled and black and more or less cracked or broken about the base, while still fast on the trees. Upon cutting them open the irregular cavity within showed the work of the larvffi. In a few instances some of the larvae still remained within the fruit. Ghent is fifteen miles in direct line from Catskill, and each locality is about ninety miles from Meriden. It is probable that the attack has been gradually extending westerly (presumably in other directions also) until it has reached the fruit region of the Hudson river valley, where, unless efficient means can be found for its control, it will continue to extend its range. It is reported as quite bad at Athens, six miles to the north of Catskill. It has not yet reached as far north as Albany, in force, although it is actually j^resent in this locality, for examination of pear trees in gardens in the city, gave me a siiigle pear hanging on a tree, June 6th, which had unmistakably harbored and given out the midge larvae. Remedies. P'rom the peculiar concealment of this insect within the fruit during its Qgg and larval growth to maturity, where it is effectually beyond the reach of the sprayed insecticides, the question of how it can be reached and destroyed, finds no ready answer. At first sight, it would seem, that since every infested pear can be readily and unerringly recognized, the method adopted at Meriden of picking and burning the infested frui while containing the larvae, would be all that could be desired. This would not be a difficult task in a young orchard, but when trees have attained the size of the Lawrences growing in the orchard of Mr. Cole at Catskill, viz., twenty-five feet in height with a spread of about twenty feet, it is virtually impracticable. Mr. Cole at first tliought of meeting the difficulty by cutting down and burning in the following month of May, after the oviposition of the midge, all of the old and large Lawrence trees which were yielding him f;carcely any fruit. On reflection, he concluded that they might serve a more valuable jair] ose by allowing them to stand as lures for the reception of much the larger proporticn of the eggs that would be deposited by the midges in an orchard of different varieties. As soon Eighth Report of the State Ei^tomologist. 151 as the time of oviposition had passed, Avhich would be before the blossoms had fallen, the blossoms could be sprayed with some sub- stance that would blight them, when the larvae, being left without their food, would die. In the discussion of this proposed remedy by the Entomological Club of the A. A. A. S. at its recent Washington meeting, Mr. Fletcher, Entomologist and Botanist of the Government Experimental Farms of the Dominion of Canada, suggested that the blighting might be done by the arsenites, and preferably, by London purple on account of its causticity; but if there was possibility that honey bees visiting the blossoms might be injured thereby, sulphate of copper might be used instead.* A few years' sacrifice of the Lawa-ence j^earcrop, in the above man- ner, should tend largely toward the reduction in numbers of the midge. It is pi'obable that the other pears do not offer as favorable conditions for its multiplication. Should the Dana's Hovey, or some other variety hereafter be found almost as attractive as the Lawrence, it also, in turn, might be given the same treatment. When by this means the insects have been largely reduced, it W'Ould not be difficult to control the attack by hand-picking and burning. Another means of destroying the insect after it has left the tree is this : The larv*, upon dropping to the ground, enter it to the mod- erate depth of an inch or two, where they remain in their larval stage for two or three weeks before they inclose themselves within their cocoons. At this time thej^ could be reached and killed by si^raying over the ground directly beneath the trees a sti'ong kerosene emulsion. Experiment and examination w^ould show the maximum amount of the liquid required. The cost of this would be very slight in comparison with the value of the pears saved. Or the same end would probably be attained by spreading lime or ashes on the ground, to be carried into it either by the rain or by sprinkling with water. Of course, if these measures were delayed until after the larvse were sheltered within their cocoons, their efficacy would be impaired. It must also be evident that if this destructive pest is to be controlled, that just so far as it is found to have extended, all pear growers should unite in an earnest effort for its extermination. A golden opportunity was lost while it was limited to the Coe Brothers' orchard at Meriden, but it seems to be quite practicable to prevent its spread much beyond its present range. * Canadian Entomologist, xxiii, 1891, p. 224. 152 Forty-fifth Report on iee IState MubEUM. Clastoptera obtusa (Say). The Oh' use Clastoptera. (Order Hemiptera: Subord. Homoptera: Fam, Cercopid^.) Say: Descr. New Hemip. Ins. in Exp. Eocky Mts., Journ. Acad. Nat. Sci. Phila. iv, 1825. p. 339; Compl. Writings, ii, 18S<), p. 2.")() (as Cercopis). Fitch: in 4th Ann. Kept. [N. Y.] St. Cab. N. H., 1851, p. f>3 (? C achatina Germ.); in Trans. N. Y. Agr. Soc. for 1856, xvi, p. 406; 3d Kept. Ins. N. Y. (in 3d-5th Repts.), 1859, p. 148, no. 193 (characterized). Glover: in Rept. Commis. Agricul. for 1876. 1877, p. 31, f. 29 (brief notice). Uhler: in Cassino's Stand. Nat. Hist., ii, 1884, p. 244 (its features). Comstock: Introduc. Entomol,, 1888, p. 178 (from Uhler). Provancher: Pet. Faun. Ent. Can. — Hemipt., 1889, p. 259 (description). Lintner: 5th Hept. Ins. N. Y., 18^9, p. [100] 242 ; in 42d Rept. St. Mus., 1889, pp. 242-246 (general notice). Packard: Bull. No. 7,U. S. Ent. Commi>^., 1881, p. 88 (quotes Fitch); 5th Rept. U. S. Ent. Comm., 1890, p. 342 (on butternut). Van Duzee: in Canad. Entomol., xxi, 1889, p. 8 (on blueberry in Canada). Osborn: in Proc. Iowa Acad. Sci., i, lSit2, p. 127 (in Iowa). Southwick: in Science, xix, 1892, p. 318 (mention). The Insect on Linden. Leaves of the linden tree, Tilia Americana, were received June 2 2d, 1891, from Mr. D. J. Garth, of Scarsdale, N. Y., having on their stems large masses of the " cuckoo-spit," from which the small ivory-white larvae which had produced it, had crept out and were actively traveling over the leaves and the box in which they were inclosed. Mr. Garth wrote : I have a large Linden growing on my lawn, which has on the stems of the leaves where they join the branches, a substance that looks like the white of an egg beaten to a froth, and small insects within it like those that I send you for examination and report. I have never seen this before, and as it appears to cover the entire tree, I fear that damage may result from it. Its Habits and Injuries. Mr. Garth was informed that the examples sent were the larvae of one of the tree-hoppers, or " spittle insects" as commonly known, which feed on the juices of the trees that they infest, sometimes injuriously, and that the froth-like substance in which they were hidden, was a pro- tective excretion from them, thrown out after the manner, and for the purpose stated in the Fifth Report Insects New York, 1889, in the account of the "Alder Spittle-Insect," p. 242. As they were apparently nearly full-gro\^n, and, probably, not excessively abundant, the injury that they would inflict upon the tree through sucking its sap, would not be sufliciently severe to render necessary a resort to means for their destruction. Eighth Report of the State Entomologist. 153 Change to the Perfect Stage. A few days thereafter, on June 26th, the perfect winged forms were disclosed, showing them to be Clastoptera obtusa (Say), and therefore identical with the Alder insect, to the history of which reference is above made. Its development was unexpectedly rapid, for when received on the 23d, no pupoe were observed, [ and only four days thereafter the perfect insect was found in the box, so fully colored that it must have emerged from the pupal case the previous day. The -pia. ii— The obtuse . • 1 • xp* 11 Clastoptera, C. obtusa. msect IS shown m l^lgUl-e 11. (Original.) Food-plants. Those that were observed in 1889 (see loc. cit.) occurred on the alder, Alnus serrulata, upon which it had been reported as common by Mr, Uhler. Dr. Fitch includes it, in his 3d Report, among the Insects of the Butternut, adding, that it may frequently be met with on quite a number of different trees and shrubs, from the middle of July till the end of the season. Dr. Packard, in his Insects Injurious to Forest and Shade Trees, names it, on the authority of Dr. Fitch, among the Insects of the Butternut, but without mentioning its occurrence on any other tree. Mr. E. P. Van Duzee, in his Hemiptera from, Mushoka Lake District, Canada, gives it as very common on the blueberry, in com- pany' with Clastoptera Proteus, during the latter part of July, 1888, There seems to be no previous record of its observation on the linden. Distribution. It apparently extends over a large portion of the United States and Canada. Say, in his original description, gives it as inhabiting " the United States." It was found by him in the Northwest near Council Bluffs. Provancher gives it as very common in Canada. Uhler states that it is found in many parts of the Eastern United States and in Texas, and extends also to Tamaulipas, Mexico. Clastoptera pini Fitch. The Pine Clastoptera. (Ord. Hemiptera: Subord, Homoptera: Fam. Cercopid^.) Fitch: in 4th Ann. Rept. [N. Y.] St. Cab. N. H., 1851, p. 58; in Trans. N. Y. St. Agricul. Soc. for 1857, xvii, p. 738; 4th Rept. Ins. N. Y. (in 3d-5th Repts,), 1859, p, 52, No. 259. 20 154 FoRTT-FiFTH Refort OjN tbe 8tate Museum. Packard: Bull. No. 7, U. S. Ent. Commis., 1881, p. 216 (quotes Fitch); in 5th Kept. U. S. Ent. Commis., 1890, p. 802, f . 272 (quotes Fitch). Provancher: Pet. Faun. Ent. Canada, iii, — Hemipt., 1886, p. 260 (?var. of C. Proteus). From Miss A. H. Wolsey, of Matteawan, Dutchess Co., N. Y., were received, June 1st, larvre of a leaf -hopper, enveloped in frothy masses Fig. 12. Larva of Clastoptera on pine — side and dorsal views. (From Packard.) among the terminal tips of pine, which are quite well represented by the figures of the above-named species, in the Fifth Report of the JJ. S. Entomological Commission, by Dr. Packard, at page 802. The Insect Described. Dr. Fitch characterizes the insect, in his 4th Report, as follows : Puncturing the leaves [of pine] and sucking their juices, in July, a small, shining, broad, oval tree-hopper, 0.14 long, of a black color, its head pale yellow with a black band on its anterior margin, its thorax prettily sculptured with fine transverse lines and with a pale yellow band anteriorlj^, its wing-covers with a broad, hyaline, white margin on the outer side, interrupted with black back of the middle, and having a shining black dot near the tip, its under side and legs pale yellow. The Larva. The larvae received by me presented the following features : The head and its appendages, thorax (except the white, sharp lateral margin of the prothorax), terminal segment, ventral mesial plates, and legs (except at the joints, which are white) are glossy black. The abdomen above and laterally is flesh-colored, with a tinge of red on the back and on the sides. A larva observed traveling about in the box containing the twigs, on June 4th, had the abdomen wholly black. The Larvae Observed on Pines. Miss Wolsey accompanied her sending with the following note relating to the insects: On the pines this spring I find on hundreds of young twigs a frothy, sappy exudation. Wiping this away, a nimble crawling insect is found, or two insects together, new to me. Thej^ are a quarter of an inch long, with a small, shining black head and shoulders, and three pairs of jointed, slender black legs. The body behind is broad, flat- Eighth Report of tee State Entomologist. 155 tened, flesh color, sometimes brick red, and ringed and horny in sub- stance. It seems like an insect in transition somewhat. The exuded sap is evidently its work. It is very active, and may be one cause of the death of terminal twigs and branchlets occurring late in the season. Miss Wolsey was requested to search the pines early in June for the mature insect, the features of which were given, that positive identifi- cation might be made of the larvae. Heavy rains had meantime occurred, and it was thought that they may have destroyed the insect in its immature stages or driven away the imagoes. Chauliodes pectinicornis (Linn.). The Comb-horned Fish-fly. (Order Neuropteka: Fam. Sialid^.) Hemerobius pectinicornis Linn.: Amoen. Acad., vi, 1763, p. 412; Syst. Nat., i, pars ii, xii edit., 1767, p. 911.1. H einerohius pectinicornis Fabr. : Syst. Ent., 1775, p. 309.1. Semhlis pectinicornis Fabr.: Spec. Ins., 1781, i, p S66.1. Sembris pectinicornis Fabr.: Mant. Ins., i, 1787, p. 244.1. Chauliodes pectinicornis Latr. : Gen. Crust. Ins. , iii, 1807, p. 198, Hagen: Synop. Nevuop. N. A., 1862, p. 189 (descrip. imago and distribution); in Proc. Ent. See. Phila., ii, 1863, p. 181 (mention ; in Proc. Bost. Sec. Nat. Hist., XV, 187?, p. 29 (in Harris Collection). Walsh-Riley: in Amer. Ent., i, 1869, p. 245 (characters of imago). Packard: Guide Study Ins., 1869, p. 607; Entomol. Begin., 1888, p. 87 (men- tion). Pettit: in Canad. Entomol., vi, 1874, p. 45 (in Canada). Moody: in Psyche, ii, 1877, p. 52 (description and habits of larva). Riley: in Canad. Ent., xi, 1879, pp. 97, 98; in Proc. Amer. Assoc. Adv. Sc. for 1878, July 1879. xxvii, pp. 286, 287 (eggs and features of Chauliodes larvEe, incl. this species?). Comstock: Introduc. Entomol., 1888, p. 220 (mention). Banks: in Trans. Amer. Ent. Soc, xix, 1892, p. 357 (cited). The illustrations of Plate 1, from drawings made by Mr. J. Bridgham, are from a larva of the above-named insect, which was received from Mr. W. C. Hitchcock, of Tiashoke, N. Y. It had betn taken from a pond in that vicinity early in March, from a hole cut in the ice. It was the only specimen of the kind observed, and none others could be found, although search was made for them in compliance with a request for additional examples for rearing. 156 Forty-fifth Report on tee State Museum. Literature. But little has been published of this insect, and no figure had been presented of its early stages. Dr. Hagen, in his Sy^iopsis of the Neuroptera of North America, in 1862, states: " The larva is unknown; perhaps it is aquatic." The following year, 1863, Mr. Walsh described* the larva of a nearly allied species, Ghauliodes rastricomis Ramb., frequently found in the Southern States, and probably in Missouri, as Mr. Walsh had "bred many specimens of the insect from the larva, which occurs under the loose bark of floating logs, apparently beneath the surface of the water, and retires under logs, etc., on the dry land to assume the pupa state, forming a rude cell there, as does Corydalis cornuta (Linn.)." The same species has recently been described and figured in its different stages by Prof. C. M. Weed, from examples taken from under logs lying under water in ponds in Ohio :f the figures, through permission of the Ohio Agricultural Experiment Station are herewith given. 'X-. Fig. 13. — Chauliodbs rastricornis: a, larva; b, pupa; c, male imago; d, female imago — all in natural size. (After Weed.) The Canadian Entomologist for May, 1879, contains an abstract of a paper read by Professor Riley before the American Association for the Advancement of Science (the entire paper has not been published), entitled: "Larval Characteristics of Corydalus and Chauliodes." In this abstract some of the larval features of Chauliodes are given, and *Proceedings of the Entomological Society of Philadelphia, ii, 1863, p. 263. i Bulletin of the Ohio Agricultural Exper. Station. Technical Series, vol. 1, No. 1, October 1889, pp. 7-10, pi. 1, fig. 3. Plate 1- Larva of Chauliodks pectinicornis: a, side ^ie?'^^ dorsal view; '^.^n abdominal segment more enlarged; d, anal segment with appendages similarly enlarged. (Ongmal.) EiasTH Report of the State Eisttomologist. 157 errors made by Mr. Walsh, in his description, noticed. Professor Riley was probably acquainted with the O. pectinicornis larva at the time of the above publication. The Larva of Chauliodes pectinicornis. Very little has been written of this insect. All the notices that I have been able to find of it are cited in the bibliography on the pre- ceding page The account given of it by Henry L. Moody in Psyche, loc. cit., seems to embi'ace all of what has been published of it. Mr. Moody found a larva on October 21st in a cavity in moist sand under a stone, nearly ready for pupation. It changed to a pupa two days there- after, and in twelve days more to the perfect stage. Of another example subsequently taken, and belieyed to have been of the same species,- which it probably was, as G. rastricorni$ rarely occurs in New England, Mi*. Moody has given the following particulars: Its movements in the water, other than by walking, ai*e always back- ward, and are performed by a downward and forward sweep of the tail. It could move rapidly, but at times would drift lazily about near the surface of the water. It ate houseflies if they were held before it by a foreceps so that they could be seized without first touching the larva. " It was thirty-five mm. long, rather slender, narrowing moderately from the middle of the body to the head, and more strongly in the opposite direction to a narrow final segment. The head is large and prominent, the body moderately flattened and somewhat appressed. The mandibles are rather large and strong, nearly straight and strongly toothed on the inner edge at the tip. The mandibles are usually widely extended when the larva is walking at the bottom of the vessel. On each side of each segment after the thoracic ones there is a slender whitish filament, which is a little longer than the body is wide at its widest part. From the posterior edge of the terminal segment there arise two filaments, contiguous at their base, long, blackish, very con- tractile and rather thicker than those of the sides. These filaments are undoubtedly respiratory organs, and are usually directed upwards, so that their tips reach the surface of the water. There is a long, stout bifurcated proleg just beneath these filaments. The color of the head is chestnut-brown; that of the body rather light brown, with a black, interrupted medio-dorsal line, and on each side a much narrower and more obscure similar line. The legs are rather stout, of moderate length and honey yellow." Habits of Chauliodes. The brief pupal stage noted above by Mr. Moody of C. pecthiicorais (twelve days) is also a feature of 0. raatrleornis as observed by Mr. Weed —in one instance, foarteen days, and in another the very short period of eight days. Of this last-named species, the following habits 158 Forty- FIFTH Report on the State Museum. are recorded by Mr. Weed in the article cited, which probably are identical with those which would be displayed by G. pectiniGomis : Their ordinary mode of locomotion is by crawling along weeds and the debris of various kinds which gathers at the bottom of ponds, but when alarmed they can swim rapidly by suddenly doubling the body up, bringing the head in contact with the abdomen, by which means they are propelled some distance through the water. They evidently live upon various animals, as I have seen them feeding on dead back- swimmers {N'otonecta undulata), flies which had fallen into the aqua- rium, and in one case a spider which I had thrown in. When a Notonecta or Zaitha would come near the Chauliodes while feeding, the latter would snap viciously at it with its powerful jaws. * * * When handled, the Chauliodes larvje occasionally eject from the mouth a considerable quantity of a blackish fluid, reminding one of a similar habit of certain locusts (Acrid idm). These larvie have also a peculiar habit of walking on the surface of the water, body downward. They can move along in this manner quite rapidly. C. rastricornis was for a long time thought to be confined to the Southern States, but it appears to be not an uncommon species in Ohio, as Prof. Weed records the capture of at least a dozen species in the Fio. 15 — The comb-horned fish-fly, Chauliodes pectinicornis, in natural size (original). year 1889, in that State. Mr. Samuel Henshaw has taken the insect in June, presumably in Boston or its vicinity, and Dr. Hagen has received it from Milton, Mass., and also from Illinois, The Winged Insect. In its perfect stage, Chauliodes pectinicornis resembles in general appearance the horned Corydalis, C corntita — a much more com- mon insect, and with which most persons are more familiar. Its more striking differences are a smaller size, a less robust build, the wingt not so strongly veined, its mandibles much shorter and projecting bus little beyond the front of the head, the antennne with long pectinations like the teeth of a comb, in both sexes, the front wings without the small round white spots within the cells, seen in Corydalis, and with the brown veins interrupted with white. Eighth Report of the State Entomologist. 159 It is a rather common insect in localities favorable for it in the State of New York, it havinj? been frequently taken by me at Schenectady, on the Mohawk river, in the months of June and July, and extending into August, where, also, Chauliodes serricortiis Say, was not rare in the month of June, while C. rastricornis has not occurred with me, in New York. Examples of C. pectinicornis in the Harris collection, and now in the collection of the Boston Society of Natural History, ,-!• , -r\ UTooron (Jnn ^'f \ ^^'^ 16.— The saw-horned fish-fly, Chauli- aCCOrQing to Ul. Xiagen \^COC. C<.f.J, odes serricornis, in natural size (original). bear the following dates of capture: July and August, 1821; May 25, 1827; June 10, 1827; September 20, 1829; N. Carolina; June, New York, Calverley. Not an Injurious Insect. While of a carnivorous habit, the food of the larva, for the most part taken from the bottom of the waters which it inhabits, would ijaturally consist of both injurious and beneficial forms, perhaps about equally divided. It has been suggested that with a seeming preference for a pond life, it might become injurious should it ever abound in fish ponds, from feeding on the eggsof fishes and the young fry; but know- ing the fondness of the bass and several other fishes for the horned corydalis — the " dobson," — there need be no fear that this weaker and less formidable looking creature would ever be permitted to become injuriously abundant in any water where desirable fish-food is not in excess. Corydalis cornuta (Linn.). The Horned Corydalis. (Ord. Neuroptera: Fam. Sialid^..) LiNN.EUS: Syst. Nat., i, pars ii, xil edit., 1767, p. 916.3 {RaphicUa). Fabricius: Sp. Ins., i, 1781, p. 392.1; Mant. Ins., i, 1787, p. 246.1; Ent. Syst., ii, 1793, p. 81.1 {Hemerobius). Latreille: Gen. Crust. Ins., iii, ?1809, p. 199.1 (Corydalis). Haldeman: in Mem. Acad. Arts-Sci., Jan., 1850, pp. 162-168, pi. 1-3 (trans- formations). Hagen: Synop. Neurop. N. A., 1861, p. 193 (bibliography and description); in Proc. Ent. Soc. Phila., ii, 1863, p. 181 (respiration and habits). Walsh: in Proc. Ent. Soc. Phila., ii, 1863, p, 365 (traveling habits of larva and transformations); in Pract. Entomol. , i, 1866, p. 113 (habits); in id., ii, 1867, p. 107 (horns of the male). 160 FORTY-FIFTS REPORT ON THE StATE MuSEUM. Walsh-Riley: in Atner. Etitonaol., i, 1867, pp. 61, 63, f. 56 (general account). Packard: in Amer. Nat., i, 1867, p. 436, figs. 1, 2 (description of larva and imago); Guide Study Ins., 1869, p. 607, f. 594 (female); in 3d Rept. U. S. Ent. Commis., 1883; pp. 333-333, pi. lii, figs. 1-3 (structural charac- ters); Entomol. Begin., 1888, p. 87, figs. 74-76 (mention); in Psyche, V, 1889, p. 224 (epipharynx). Saunders: in 3d Rept. Ent. Soc. Ont., for 1872, 1873, pp. 56-58. figs. 47, 48, not 49; the same in Canad. Entomol., vii, 1875, pp. 64-67, figs. 9, 10 (natural history). RrLEY: 5th Rept. Ins. Mo., 1873, pp. 143-145, figs, 69, 71 (general account); in Scientif. Amer., 1, 1873, pp. 393, 393 (habits, figares of stages, etc.); 9th Rept. Ins. Mo., 1877, pp. 125-129, figs. 30, 31 (early stages); in Proc. Amer. Assoc. Adv. Sci. for 1876, xxv, 1877, pp. 375-279 (eggs); in id. for 1878, xxvii, 1879, pp. 285-287 (eggs, larva, imago, respiration, etc.); in Canad. Entomol., xi, 1879, pp. 96-98 (larval characteristics). Prec. as Conjdalus cornutus. Barnard: in Amer. Entomol., iii, 1880, p. 178 (as Corydalics — eggs). Krauss: in Psyche, iv, 1884, pp. 179-184, pi, 3 (as Corydalus — nervous system of larval head). Fyles: in 15th Rept. Ent. Soc. Ont., 1885, pp. 46-48, figs. 6, 7 (transforma- tions). Comstock: Introduc. Entomol., 1888, pp. 219-331, figs, 190, 191 (eggs, larva, and transformations). Lintner: 7th Rept. Ins. N. Y., 1891, p. 354 (the larva a traveler). Banks: in Synop. Oat. Bib. Neurop. N. A., in Trans. Am. Ent. Soc, xix, 1893, p. 357. This iisacthas been mentioned in my reports, but it has received uo exteaded notice, although inquiries have frequently been made of it by letter and in person. Personal inquiries have uniforml}^ been met by presenting the excellent figares and account given by Professor Riley in the Amey'lcan £Jiitomologis( , for December, 1868. The figures of that article are herewith given from electrotypes obtained from Pro- fessor Riley. For another paper upon the insect from the same author, but esseutially the same, the reader, may refer, if more con- venient, to the Fifth Missouri Report. It may be noted here that in each of these the eggs of the insect are erroneously figured, as was subsequently learned, and for their correct representation and descrip- tion, the Ninth Missouri Report may be seen, where, also, the young larva is for the first time described and figured. References to other writings on this insect are given in the above bibliography, and as some of them, at least, may be conveniently referred to by tho-ie who would like to know more of its interesting habits and transformations, it is thought not desirable to embody them in a general account for the present report. Plate a.- The horned Corydalis, Cobydalis cornuta : o, the larva; 6, the pupa; c, the male imago; d, head and thorax of the female. Eighth Report of the State Entomologist. 161 The following was sent to a coiTespondent, Mr. C. L. Shear, in Alcove. N. Y., who wrote July 7th, 1891: Will 3'ou please give me the name of the inclosed insect, and tell me whether it is common oi- not; also whether there is any notice of it in your reports. The s])ecimen is somewhat mutilated, owing to the carelessness of the collector, which was a cat. The insect is the " horned Corydalis," Corydalls cornuta, so named from the two long curved mandibles borne by the male. It belongs to the order of Neuroptcra, and is allied to the dragon flies — like them, its larvae living in tlie water. It is a common species, and is distributed over a large part of the United States. The larv;e are often collected by boys from beneath stones in running streams, and sold to fishermen at a good paying price, as bait, ])articularly suited to bass — it being, in piscatorial parlance, " the dobson," or " the crawder." They are formidable looking creatures, measuring, w^hen full-grown, about three and one-half inches in length, with a large flattened head provided w^ith unusually long and strong mandibles, three pairs of long legs and two sets on each side of floating lateral appendages which are breath- ing organs or gills, for its use in the water. It is also provided with the usual number of spiracles or breathing pores, to serve for respi- ration when it leaves the water for its pupation on the land beneath a stone or log. It is shown in Plate 2 at a. Dr. David Norwood, of Esperance, has given me the following infor- mation of its habits, which I find recorded among my notes under date of May 3d, 1869: The larva leaves the water earlier than is usually supposed. At the present time thej^ may be found hidden under stones upon the shores of the Schoharie creek. They sometimes occur at a distance of a hun- dred yards from the stream in adjoining garden plats beneath stones. They are very numerous in this vicinity, and are extensively used for fish-bait. Quarts of them can be taken at any time by the boys, who adopt the following ingenious plan for capturing them: Wading into the creek, with a seive in. one hand and a hooked wire in the other, stone after stone is carefully raised w^ith the hook, and from almost every one a larva is swept out by the running water and dexterously captured by the seive placed in position for receiving it. In this man- ner a bushel could be easily caught if so many were needed. The above was communicated to the gentleman in reply to his inquiry. The present opportunity' is taken to record some observations recently made by me on the habits and respiration of a larva • under confinement. A larva of this species was kept under observation in an aquarium in my oftice for eight months, during which time it partook of no food, 21 162 FoR'iY-FiFTU Report on the State Museum. although flies and other insects, and small earth worms were ofliered it. It underwent no moiiltings or other changes, and at the expiration of the time stated, it died, apparently from not having partaken of nourishment. Professor Riley has written (in the (janadian Entomoloer 16th. The "insects'" (which of them could not be definitely stated, but probably "the long-stings,") had been so abund- ant during the month of August that they had attracted the attention of persons living in the vicinity, and small boys, it was reported, had been amusing themselves by catching and killing them. The Thalessas were only seen upon the bark. The males were apparently awaiting the emergence of the females from the can be readily known by its antenna^ longer than the body, and quit - 164 Forty-fifth Report on the State Museum. trunk, for if disturbed, they would frequently tiy up for a short circuit and then return. The females, rarely seen until the latter part of the afternoon, were always intent on oviposition either getting in readiness to insert the ovipositor, or with it already entered at various depths to a maximum of two inches, and with the abdominal muscular sac aiding in oviposition, distended in different degrees. The wood was apparently solid where the ovipo- sition was occurring, but the bark had been jjerforated as numerously by the wood-wasps as had been the decorticated portion. That the wood was at least omparatively solid was shown by the firmness with which the ovipositor clung to it. In an attempt to remove an example, while holding it by the thorax and abdomen, the body was torn in two near its terminal end. But by seizing the ovipositor between the thumb and linger and pulling it steadily but gently, it could invariabl}^ be withdrawn entire in from fifteen to twent}' seconds of time. The tree was passed daily in my walks to and from my office. The Thalessas were observed for the last time on September 18th and the Pemphredons on September 2 2d. In the notice of Thalessa lunator in my Fourth Report, the question was asked: "Does Thalessa oviposit in exposed larv:e?" An ovipo- sition of a large Ichneumonidan in a colony of a Datana on a hickory tree, observed by me about the year 1860^ was described and referred, from memory, to Thalessa lunator. In Dr. Riley's admirable paper on "The Habits of Thalessa and Tremex," on pages 168-1 79 of Insect Life for December, 1888, in replying to the above query, he has endeavored to show that this method of oviposition was impossible to Thalessa, and suggested that my memor3^ of the species that I had seen thus engaged must have been at fault, — some other large Ichneumon hav- ing been mistaken for Thalessa. That Dr. Riley is correct in this opinion finds strong support in a notice entitled "Oviposition of Anomalon sp.," by Prof. C. P. Gillette, in Entomological JVetcs, i, 1890, p. 130, in which is related the oviposition of a large black Anomalon species, in a colony of Datana niinistra, in a manner and_ with all the attendant circumstances identical with the operations as described by me. In the Journal of the JSTev} York 3Iicrosco2ncal Society/, for October, 1891, page 135, Rev. J. L. Zabriskie gives an interesting account of the very serious results attending a wound said to have been inflicted by one of the " long stings " on the arm near the wrist of a robust, healthy laboring man. " For four or five days intense pain, and great swelling involving the entire arm, the axilla and a portion of the side of the body, gave symptoms of a severe case of erysipelas." Eighth Report of the State Entomologist. 165 In my Fourth Report, a figure is given on page 39 of a Thalessa in the act of ovipositing, taken from some old cut, which, under the supposition that it was intended to represent^ lunator, was so desig- nated by me. Dr. Riley, in Insect Life, i, p. 173, has copied from the American Agriculturist, a figure ahnost identical with this, which he refers to Rhyssa per- suasorid (Linn.) — an European species, having a shorter oviposi- tor than ours, and with other differential features that have, given it place in another genus, s? In correction of my error, the „ „„ ^^ , .■ -r, J ' Fig. 20 — The long-sting. Rhyssa PERSUASORiA, figure of my Fourth Report is female, ovipositing, herewith given with its corrected name, and in Plate 2 [Figure 1 7 ], I also present the excellent plate of Thalessa lunator which was one of the illustrations of Dr. Riley's paper previously referred to. The illustration of Tremex Columha, in its larval, pupal and perfect stages, from the same paper is also given herewith, as being a great Fig. 21 — Tremkx Columba: a, larva showing the Thalessa larva fastened to its side; b, head of larva; c, pupa of female; d, male pupa; c, adult female — all slightly enlarged. improvement upon the representations hitherto published of this species, and as illustrating the parasitic association with it of T. lunator. 166 Forty-fifth Report on the State Museum. Provancher, in his Faune Ilymenopterologique de la Province de Qtu'ber, names RJn/si^a persuasoria as found in Canada; and Mr. W. H. Harrington in tlie 21st Annual Report of the Entomological Society of Ontario, 1891, states of it: "I have not recognized this species at Ottawa yet, but have a male apparently belonging to it from Rev. G. W. Taylor, of Victoria, B. C." ? Janus flaviventris Fitch. TJie Currant-stem Girdler. Of the operations of this insect, which was noticed in the Fourth Report on the Insects of Neio York, page 47, and which, up to the present we have not been able to refer, positively, to any known currant pest, Mr. J. F. Rose, of South Byron, N. Y., has Avritten, under date of June 6, 1891, as follows: I inclose specimens of a few currant stems which show the work of an insect which cuts them off so that about two or three inches of the young growth breaks over. A few years ago I was badly tormented with currant borers, and, on marking several shoots in June that Avere injured in this way, found that each of them in the spring had a borer. Since that time it has been my habit to go over the currants several times, cutting off these shoots about one inch below the injury and burning the injured lips. I now find very few borers. Am I right in thinking that the saw-fly, or whatever it is that does the cutting, is the egg-inserter that makes the currant stalk-borer ? Replying to Mr. Rose, he was informed of the puzzle that this girdler had been, and request was made that he mark some of the punctured stems, and send them in the early spring for examination for the pupa or matured insect, that the insect causing the injury might be identified. Its operations were seen by me on the grounds of Mr, George T. Powell, at Ghent, N. Y., on June 8th of the present year, in his extensive plantation of Fay's Prolific currant, but only in a few examples. A dissection of two of the punctured twigs received from Mr. Rose disclosed the e^g^ within the stem, at about, a half-inch in each instance below the puncture. It was Mhite, transparent, rounded at the ends, one-twentieth of an inch in length and half as broad. The following, taken from Insect life, iii, 1891, p. 407, may prove to be the recognition and identification of the '' currant-stem girdler," above referred to: I .-end you by this mail one male parent of a native Hymenopterous currant worm, the same as was noted a year or two ago by Professor Lintner, in his Fourth New York Report. I first bred one pair in 1887 from larva^ grown in 1886, and this was raised in 1888-'89. The springs of 1888 and 1890 I was not able to find any. Please report name, etc. — [E. W. Allis, Adrian, Michigan, December 3, 1890.J Eighth Report of the State Entomologist. 167 Reply. — This insect is without doubt Janus flaviventris Fitch; see Fitch's seventh report, species No. 12. This discovery of yours is a very interesting one, if the insect works in the way described by Lint- ner in his fourth report, page 47. — [December 5, 1890,] On turning to Dr. Fitch's Seventh Report (page 165 of the Sixth- Ninth Reports, 1865), vve find, as Nos. 12 and 3 3, Janus flavivtntriSy n. sp., and PhylloeC"S trlmaculalus Say, followed by: "In rj'e fields toward harvest time, scattering heads of the grain remaining erect and having a prematurely rij^e appearance, the straw bored its whole length by a footless worm a half-inch long." In the text following, Dr. Fitch questions whether this may be the work of some species of Chlorops, or of some saw-fly nearly related to the Cephus pygnieus of Europe [since found in the State of New York]. He then adds: "A New York insect of this kind, the same in size with the European species, and coming abroad like it the last of May, has the hind body cj'lindri- cal instead of being compressed, and consequently pertains to the genus Janus.'''' Dr. Fitch's description of the species is herewith given, that it may be seen hereafter if it be the one tiiat may be bred from the girdled currant stems. The girdling operation would be anomalous in the Cephidae. It is a ])retty little fly of a shining black color, with its hind body lemon-yellow except at its base, its mouth being straw-colored, and also the hind margin of its collar, the base of its wings, a small black spot above its sockets, and the fore and hind margins of the raeta- thorax. The hind body is more narrow than the fore bod}', and more narrow and long than in the typical species of this genus, forming almost two-thirds of the total length of the insect. Its basal segment is black, edged anteriorly with straw-yellow, and with a slender line of this color along its middle, ending in a large triangular spot. The second segment is also black except at its hind end; and on the sides is a blackish cloud on the surface of each of the remaining segments. The wings are hyaline and glossy, their stigma sooty brown, which color extends inward, occupying most of the anterior marginal cell. A faint smoky cloud may also be perceived near tlse middle of the pos- terior apical cell, and another along the margin of the anterior one. The hind feet are dusky. Janus is a genus < f the t>oc< r/VA', allied to Cephus. J. fluviven- tris Fitch is the only species recorded in thisiounlry. Mr. Edward Norton has included it in his " Catalogue of the Tenthredinida> and Uroceridu' of North America," in 1867, in the last-named family, but had not seen the species.* Mr. E. T. Cresson, in his later Catalogue (1^80) of the same families, includes it among the Tenthredinichi , and in his more recent "Synopsis of the Hymenoptera of North America," in the Uroceridm (page 172). *In Transactions of the American Entomological Society, ii, 1869, p. 314 (quotes Fitch's description). 168 Fort i- FIFTH Report on the State Museum. From perhaps a dozen of the burrowed twigs subsequently sent to me by Mr. Rose in the spring after the girdling had been marked in the preceding spring, a single exami)le of the perfect insect was obtained. It had become moldy and was set aside for cleaning, after an unsatisfactory comparison with the Fitch description had been made, which seemed to indicate a different species. Unfortunately the specimen has been mislaid and can not now be found. Nematus Erichsonii Hartig. llie Larch iSaw-ffi/. This insect is still continuing its ravages in the Adirondack Moun- tains. On August 7, 1891, many of the larches observed from the road Fig. 23.— The larch saw fly, Nesiatus Erichsonii, in natural size and enlarged, and the larvae in different stages in natural size. (After Packard.) in passing from the Wilmington Notch to the Mountain View House in North Elba, in Essex county, were seen to be nearly or entirely stripped of their leaves. Quite a number of dead larches were noticed which it was thought had been killed by their annual defoliation for a few years past — the attack having been observed by me in the Lake Placid region in the summer of 1888. At this time the larvje had entirely left some of the tree.«, while on a few they were still feeding in small numbers. Eighth Report of the State Estomologist. 169 The following inquiry of this insect from a gentleman of Kings county, Prince Edward Island, Dominion of Canada, and giving an account of its ravages in the Province, and my reply to the same, is from the Country Gentleman, of November 13, 1890 (page 905). Eds. C. G. — The juniper or larch {Larix A'inericana), which abounds in this vicinity, and, in fact all over the Province, is being devastated of its leaves, and presents a withered, decayed appearance through the action of the saw-fly, Neinatxis Erichsonii. The first indication of this pest was noticed in the summer of 1889, but this summer the injury has been so much aggravated that in the months of July and September it was rare to see a green leaf on a tree. Now, however, they are free from the attacks of the pest, as the larvie, when matured, fall to the ground, leaving the tree to make a little growth by the aid of the autumn rains. Whether this pest is going to exterminate the larch completely in this Province remains to be seen. It has, how- ever, done great injury to the larch in Nova Scotia. I am informed that the fly was flrst noticed near Boston, Mass., in 1880. I am also told that there is no remedy to allay the ravages of the fly. Does the sage associate of this paper know of any means ? I would like to hear from Dr. Lintner on the subject. — J. A. M., Kings Co., 1'. E. I. The communication above gives an interesting account, from an entomological standpoint, of the first notice and rapid spread and serious ravages of this introduced European insect in Prince Edward Island, lis operations there appear to l)e similar to those which seem everywhere to follow its spread. Ttiat there is no remedy, so far as known, to allay the ravages of the insect is unquestionably too true. When the larvse make their attack upon an isolated tree in cultivated ground, they may be destroyed by an arsenical si)raying, but, as I have elsewhere written, when large areas of the larch are infested, as tamarack swamps, it is useless to attempt to compete with the enemy. ]ts destruction through any applications that could be made would be altogether too costly to war- rant the outlay required. The best that could be done in such cases would be to fell the trees as soon as it is noticed that they are dead or doomed, and before decay has imj)aired their value, and use them for some of the many purposes for Avhich the timber is available. A some- what extended and illustrated account of this larch saw-fly appears in my Fifth Report on. the Insects of N'eio York. Feniseca Tarquinius (Fabr.). The Little Orange Batterfy. This, usually rare bulterHy, Avas frequently seen in Keene Valley during the months of July and August, of 1891. Attention was ordi- narily drawn to it by its short, rapid flights in the roadways, flitting at a height of about ten feet from the ground, often in pairs chasing 22 170 Forty-fifth Report on the State Museum. one another, or, if driven up from the leaves, flying about for a brief time and then returning and alighting upon the branch it had before occupied. It was seldom active except in bright sunlight and at about the middle of the day. In a single instance only was it seen to alight on the ground — in the Wilmington Notch, Adirondack Mts., August 6th, 1891. Examples of the butterfly were taken by me in Keene Valley on the following dates : July 20, 24, 27, 29, August 4, 5, 15, 20. Most of those collected in August were more or less worn. A larva was found in a colony of Pemplugus tessellata (Fitch), on July 20th, which was nearly mature, for after having t aten a few hundred aphides it transformed to a pupa on the side of the box containing it. Brushing from the alder a colony of the aphides for food for the caterpillar, three additional caterpillars were discovered in the box the following day which were unobserved at the time of collecting. It was subsequently noticed that a lump like accumulation of the aphides on the alder twig usually indicated the presence of a nearly full-grown larva beneath it. It was observed that Pemphigus tessellata was much less abundant in Keene than in former years. Probably its numbers had been largely reduced by the Feniseca caterpillars of the first brood. Of the four larvfe mentioned above, the first pupated on July 23d. Of the other three, the time of pupation was not noted, but was between August 4th and August 8th; of these the first butterfly emerged on September 11th, and a second one during the latter part of Novembei'. Eudryas grata (Fabr.). The JBeaiitifid Wood-nymph . With the increase of this insect and the fondness of the caterjtillar for the leaves of the Virginia creeper, Ampelnpsis (juinquefolia, it may develop into a household pest. In the spring of 1890, several of the pupiie were found beneath the border of a carpet in the rectory of Grace Episcopal church, in Albanj^, into the substance of which they had partly burrowed for pupation, and had inflicted some injury by fi ~ S^^^^ . P-r^-^/^ cutting the threads. Almost the JV entire side <^f the rectory is covered, and the windows quite sui-rounded, with the Ampelopsis, but the cater- FiG. '2^.- Eudryas grata; a, the caterpillar in natural size; b, its fifth segment enlarged, c, its collar; d, marivings of the hump on pillars had not been observed as the eleventh segment; e, an uoper view of the egg, and /, a side view : each enlarged from the natural size shown beside them (after Riley). unusually abundant during the pre- ceding year. Eighth Befort of the State FiyTOJWLOGisT. 171 The caterpillar, which is beautifully marked in black and orange bands (six black ones and one orange on each of the principal segments) and black spots, is shown at a, in Figure 23; at e and/, the delicately ribbed egg of the moth is represented in enlargement, showing its flattened form. In Figure 24, the moth is shown. When seen, in nature, in its varied and tender colors, the names that it bears — both the popular and the scientific, can not fail of being appreciated. See Fifth Report of this ^,0. 24._The beautiful wood-nymph, series, 1889, p. 181 for its description. Eudryus grata (after Riley). Scoliopteryx libatrix (Linn,). 7 he Scallop- Wing. The caterpillar was taken in Keene Valley, N. Y., in July, feeding on the leaves of willow. At maturity it pr( sented the following features : Length, 1.75 inch, cylindrical, slender (about one-eighth of an inch broad), tapering at the extremities; velvety green. Head green, as broad as the first segment, traversed mesially by a delicate red line- Abdomen with a j^ellow or cream-colored line midway between the doi'sum and the spiracles, edged below, interruptedly, on segments two to six, with black. Spiracles bordered with orange. Setse from the setiferous spots, short and inconspicuous. (See figure givtn by Dr- Packard in the Fifth Report of U. S. Entomological Commission.) The caterpillar spun its thin cocoon between leaves attached to some threads by its anal spine on the morning of July 24th; on the 26th, it had transformed to the pupa. The moth emerged August 5th — eleven days pupation. I had previously given the characters of this caterpillar in my Entomological Contributions No. I, 1872, p. 63. The following differ- ences therein fi'om the above may be noted: The yellow lateral stripe is shaded beneath wnth brown; head crossed by a black stripe; pupa- tion of the summer brood from fifteen to twenty days. (See, also, note in IiJnt. Contrih., HI, 1874, p. 164.) I have taken this moth on May 6th, which was probabh^ a hibernated individual. Stainton remarks of its habits in England*: "The single species of this genus is well known for its hibernating faculties and *Manual of British Butterflies and Moths, 1857, i, p. 308. 172 Forty- FIFTH Report on the State Museum. partiality to out-houses; it is consequently frequent!}^ met with by incipients during the winter months, and may be found on the wing at the end of April and in May." The moth was of common occurrence "at sugar" in collections made by me at Schenectady, K Y., in the year 1875, having been taken July 8 (sugaring commenced July 7), 10, 12, 13, 14, 15, 20, 24, 30. The following year it was taken or noted, also " at sugar," on May 20 (not on sixteen succeeding nights of sugaring), June 26, 27, 28, 29, July 1, 3, 7, 8 (being each night of sugaring), 15 (absent on ten nights following), August 9, 10, 14, 19 (not seen on September 4 and 6, Avhen the collections were discontinued). It was the most numerous during the last of June. These observations indicate two broods a year —in June and August. According to Guenee, Noct. ii, page 405, it has, so to speak, no fixed time for its appearance from the pupa. Roilast, in his Catalogue des Chenilles Europeennes, gives as the food-plants of the caterpillar, willow and poplar, in summer and .-autumn. With us it has only been recorded on the willow. Exechia spe( ies ? A Fungus Gnat. A number of specimens of this ^j were brought to me by Mr, A. L. Train, as having occurred in such abundance in his room, in Albany, as to excite his curiosity as to their source and purpose. Being unknown to me, they were submitted to Mr. F. Kowarz, the distinguished Dipterologist of Franzensbad, Bohemia, for name and habits, if known, who very obligingly returned the following informa- tion in regard to the insect: It belongs to the genus Exechia Winnertz, of the family of Mycetophilido:. Baron Osten Sacken does not mention this genus in his Catalogue of North American Diptera, 1878. The various species of Exechia live, like their kindred, almost all in mushrooms, which are fully desti-oyed by the larvre of Mycetophilidiv. To speak of their utility or destructiveness in an agricultural sense depends altogether on the value of the mushrooms for the farmer. With us the opinion regarding mushrooms is divided. Mr. F. V. Theobald, in his volume just published — An Account of British Flies — states that the Exechia larvae live in fungi. E. fun- gorum and E. lateralis are common British species, while eight other species occur in England. These fungus gnats often appear in great numbers on windows in houses, especially in the autumn. Eighth Report of the State Entomologist. 173 Telephorus Pbilineatus (Say); Occurring on Snow. A remarkable occurrence of the larva of what is believed to be the above named insect, was reported by Mr, Holdredge, of Center, Herkimer county, N. Y., through Mr. Daniel Batchelor, of Utica, N. Y. Mr. Holdredge's statement is, that on or near the 10th of February last (1891), during a rain, the insects " fell " by millions on his farm and upon the adjoining one, owned by Mr. Morgan. For the distance of a half mile and for about twelve rods in width, the snow was literally alive and black with "the worms," while beyond this strip in every direction, they were quite, but less, abundant. They were seen to travel about for a day or tAvo, while some of them penetrated into the snow, and others were frozen stiff on the surface. Some of the frozen ones were taken into his house, where exposed to warmth, they became active and quite lively again. Examples of the larva? sent me were submitted to Dr. Riley, and were identified by him as those of Telephorus "l\^^ jM^' MSt, i>il^^^o,tiis, with the possibility of their being H^a^ JM rp Carolinus (Fabr.), the northern repre- sentative of the genus. While according veiy well with the former, there appeared some slight differences in the density of the , . , X, A A velvety covering. Figure 25 (after Riley), a, larva, natural size; 6, head and _ •' . . " ' anterior segments enlarged; c, illustrates the insect, and Figure 26 (after the beetle, natural size. Packard), the larval head and prothorax from above and below. The explanation of the larvre appearing on the snow would be, that they were drawn from the ground by the [warm?] rain, and with the change of rain into snow, ^^ '^ thej' continued, with its increasing depth to ,y;/ v; ,viv mount to the surface, as other larva? have been known to do. (See the account of the occur- rence of the bronze- colored cut-worm, Nephelodes viola n s Guen., on snow, in Can- ada, and in tSullivan Fi<^' 2e.— Head and prothoraclc segment, from above and , -vT -\7- 1 i J • below of Telephorus bilinkatus. county, IN. v., related in the Fourth Report on the Insects of JVew York, 1888, pp. 54-56.) Fig. 25.— Telephorus bilineatus: 174 FORTV- FIFTH REPORT ON THE StATE MvSEUM. Another singular occurrence of this Telephorus larva is that in which many specimens were drawn up from a well in Bloomfield, Conn., adhering to the bucket, from the latter part of November, 1875, to the month of April following, being the most abundant about Christmas, on which day forty or fifty were drawn up at once. Dr. Riley's explanation of their presence, is that " they must have been feeding upon small animals in the crevices between the bricks [stones?], from which they occasionally fell into the water and instinctively adhered to the bucket."* Of the normal habits of Telephorus hiUneatas, Dr. Packard states, that Mr. P. S. Sprague has found the larva near Boston under stones in the spi'ing, when it pupates, and earl}'' in May becomes a beetle. It should probably be regarded as a beneficial species from its habit of feeding on other insects. Dr. Riley has bred the beetle from larva^ found feeding on the apple-worm of the codling-moth, Carpocapsa ponionella, and has frequently met with it under apple trees among early wind-falls, where it was probably searching for the worms of the infested fruit. He has also found it in the tree upon the apples. The perfect insect appears to be mainly a vegetable feeder, having been shaken from the branches of plum, peach, and apricot trees. Dr. Packard states that early in May it feeds on the newly expanded leaves of the birch. f This insect belongs to a subfamily of the Lanvpyridm^ or fire-flies, viz., the Telephorinw. No light-organs exist in any of the species. " They are more active than the other Lampyridm, and are often found upon flowers, or running over the surface of leaves in search for their prey, which seems to consist mostly of the soft larvte of other insects" (LeBaron). PLachnosterna fusca (FrOhl.). White Grub of the May Beetle. In reply to a request from Red Bank, N. J., for name and habits of specimens sent, the following answer was made through the Coxintry Gentleman of October 29, 1891: The insects sent are white grubs, varying in size from about one- fourth grown to nearly full growth, and are from q^^^ deposits of • First Annual Report of the U. S. Entomological Commission, 1878, p. 303. + First Annual Report of the Injurious and Beneficial Insects of Massachusetts, 1871, p. 26. ElGEIH EfPOET of IBE StAIE Ei\'J 03ICLCGJ S'J . 175 FlC4 Thp different years. They are either the " a\ hite-grub " of the common May or June beetle, lAicJiiwsUr')U( fusca, or a nearly allied species. There are a number of these Scarabmidfr which so closely resemble L. fusca that the beetles can be with diificnlty separated, and indeed we do not know, or do writers agree, which should be recognized as species or regarded mereh^ as vaiieties. Dr. Horn, in his " Revision of the Species of Lachnosterna of North America,"* has referred twenty-one species to the L.fnsca group, while more recently Professor J. B.Smith has ^ ^'*'*'^'"*' ^^ •=> ' ' •' Lachnosterna found structural features in six forms previously *"'-'^*^^ ^^"^'''^• confounded with Z. fusca, and has named them as species.f The little that is known of the larvre of these beetles lenders it absolutely impossible to separate and determine them. After enumer- ating and characterizing ninety- one species of American Lachnosterna, Professor Smith makes regretfully this confession: "As it sands at present, roe do not knoio, positlvelij, the larva of a single specie of Lachnosterna. ''''X The habits of these " white-grubs " of the fusca and neaily allied groups, may be presumed to be very much alike — all feeding on the roots or grasses, various plants and shrubs, or other vegetation. Although the examples sent can not be jjositively named, yet if there is anything connected with their finding that renders it particularly desirable to know more of them, they will be given further study for approximate determination. Cyllene pictus (Drury). The Hickory Borer. Some insects taken from burrows in dry hickory wood were received early in March, from New Market, New Jersey, with inquiries of them. They w^ere recognized as th<: pupa? of the hickory borer, Cyllene pictus, formerly known and appear- ing in many of our entomological writings, as Clytus pictus. This ?pecies was confounded with the locust borer, Cyllene robinicB (Poerst.), for a long time, and until it was separated from it by distinctive characters by Mr. Walsh, Fjg, 28.-Thehickory-tree borer, Ovllene •" 1 o/i J c rpi n ^ ' £ ^\ J. pictus; a, larva; b, pupa. m 1864. § Ihe lemales of the two species can be distinguished only with difficulty, but the male of C. pictus can be readily known by its antennje longer than the body, and quite • Transactions of the American Entomological Society, iv, 1887, pp. 209-29(>, Plate 3. t Notes on the Species of Lachnosterna of Temperate North America: Proc. U. S. National. Museum, xi, 1889, p. 503. i Id., ib., p. 52;i. § Proceedings of the American Entomological Society, iii, 1864, pp. 420-422. 176 Forty-fifth Report on the State Museum. stout; and "the wing-covers widened at the base and tapered toward their tip, so that the two together just before their extreme tip equal the basal width of one of them." The in^ectis represented in its several stages in Figure 28. In the pupoe received, the characteristic w-mark- ing in yellow of the black wing-covers, and the yellow transverse bands of the thorax are already to be seen, indicating that they are near their perfect stage. The beetles may emerge, if kept in a Avarm room dur- ing the month of March, although under their natural conditions they would not .'ippear until May or June. The species never injures hickory trees to the extent that its congener does locusts. In many localities the locust trees have been entirely destroyed by this pernicious borer. A detailed account of the larva (grub) of this species is contained in the Fifth Report of the U. S. Eritomolo< ileal Cotnmission, by Dr. Packard, 1890, page 287. In addition to the hickorj^ {Carya alha), C. pictus also burrows in the black walnuc {Juglans nigra) and in the butternut {Juglans cinerea). This species appears abroad early in the spring (in May and June), while C. robinim occurs during the month of September. Remember- ing this will enable any one to identify at once the examples of the two from any that may be captured abroad, or from dates of collections indicated in cabinets. Tenebrio molitor (Linn.). The Meal-ioomi. Two of the pupffi and two beetles, identified as the above named insect, were received from Newark Valley, N. Y., as having been found, together with many of the " grubs," in Ashton's factory-filled salt which had been stored, unopened, for two months in a tight meal room. The question was asked how they came there and if it was safe to use the salt in which they occurred, in butter and food. If the pupjc and beetles sent were actually found toithin, the nalJ, the following explanation of their occurrence there, is the only one that presents itself, "^rho meal-room, in all prob- ability, h a r b o r e d numliers o f the meal-worm — the larvie of the beetles. After having fed to inaturity on the meal or flour at hand, in leav- "^ ing it for some convenient place for transformation t<» ihe Fig. 29.— The meal-worm, Tenebrio molitor; c, d, a, P^ip^^ ^"*^ ]>erfect stagCS, they the larva, pupa, and imago, natural size; also the entered the sack Or barrc]^ through some hole or crevice beetle enlarged. Eighth Report of the State Entomologist. 177 where, after their changes, they were found. The larva? coukl not feed upon the salt, nor could it be of any particular service to them in any manner. Their presence Avould not in the slightest degree impair the value of the salt for use. The pupae would be readily seen; the beetles would at once escape, and no eggs would have been deposited in the salt. The insect has not been figured by any of our writers. The accom- panying illustrations of its larval, pupal, and perfect stages are from Curtis' Farm Insects. In shape and general appearance the beetle is much like T. obscurvs Fabr., but while that is of a dead opaque-black color, this is of a shining black. Its larva " is about an inch long, cylindrical, smooth and glossy, with the terminal segment semicircular, slighly serrated on the edges, and terminated in a single point" (Packard). Curtis describes it as " cylindric, smooth, ochreous, with bright rusty bands and a few scattered hairs; two small horns, six pectoral legs, and two minute spines at the tail." It is a common species in the Old World, a^d has been quite largely distributed by commerce in all commercial countries. It is said to have been recently introduced, intentionally, in Chili for the purpose of using its larva? for bird-food.* Dr. Packard's remark, " that it is found in all its stages about corn- and rye-meal, and is frequently swallowed with food," finds apparent confirmation in a notice entitled, "Larvae of Tenebrio molitor in a Woman's Stomach,"f in which two insects reported by a physician to have been ejected from the stomach, are identified as the above, and the statement accepted as probable, with the suggestion that the larvje may have been swallowed without under- going mastication in corn-meal mush; the irritation that their move- ments would occasion, would naturally excite vomiting and their ejection. Another account of this same insect, which is quite amusing, is related, where the scratching sounds caused by a number of the beetles which had bred within a pin-cushion filled " with coarse shorts," led the guest at a hotel to believe, and make complaint, that the room to which he had been assigned, and in which he had passed a sleepless night, was haunted. J Pulvinaria innumerabilis (Rathvon). The Maple-tree Scale Insect. Referring to the notice of this insect in the Sixth Report on the Insects of New York, Mr. Andrew S. Fuller, in a communication to me, under date of February 20th, 1891, has written as follows of its * Insect Ufe, i, 1888, page 154. \Id ., page 379. t ^ ii-, 1890, page 148. 23 178 lORTY-FIFTH REPORT ON THE StATE MuSEVM. increase and injuries as observed by bim, in tbe city of Brooklyn, N. Y.: The Pulvinaria innumerabllis is not only destroying all of tbe soft maples, Acer riibrum, and wbite or silver-leaved raaple, Acer dasy- carpum, in tbe city of Brooklyn, but it bas also invaded tbe gardens and is rapidly destroy- ing tbe grapevines, and tbe Japan ivy, Am2)elopsis Vetchii, wbicb covers tbe brick walls of many tine residences and cburcbes. On tbe latter tbe pest bas a most excellent retreat and sbelter, and can not be dislodged by ordinary remedies. Tbere are already many thousands of trees dying from tbe attack of tbis sucking peht, and tbe city is doing nothing to check it. A few thousands of dollars properly expended a few years ago might have saved tbe trees, Fig. 30.— The maple-tree scale insect, Pulvinaria iNNUMERABiLis. 1^ nrwi million of dollars would not replace tbe damaged trees. I have written several articles calling the attention of tbe residents of Brooklyn to this pest, and made one report to tbe Board of Parks (by request) on tbe same, but the owners of tine shade trees groan over their loss but make no practical eifort to repair it. Tbe future entomologist is likely to have quite as much to do as those of the present day, and it is to be hoped that bis labors will be more highly appreciated. Tbe scale of the insect with tbe large, white, cottony mass thrown out from beneath it for tbe protection of the eggs and tbe newly- batched young is represented in Figure 30. Mr. E. P. Van Duzee, of Buffalo, N. Y,, in a letter dated February 28th, 1891, has written of tbe large numbers of this insect observed by him, after tbe falling of tbe loaves the preceding autumn, on tbe maples planted as shade trees along the streets of Buffalo. He was apprehensive that, in their increase, they would prove to be a great scourge tbe following summer. Eighth Report of the State Entomologist. 179 Gryllus luctuosus Serville. The Common Black Cricket. Mr. Wm. B. Marshall, of the New York State Museum, at Albany, reports that during a sojourn at Cape May, N. J., in the month of July last, a suit of clothes belonging to a friend, which had just been received from the tailor, and was hanging over the back of a chair, was completely ruined in a single night by crickets that had entered through open windows and eaten large holes in the garments. On request, some of the crickets were secured and sent to me for identifi- cation. They proved to be Gryllus luctuosus Serv. While we believe this is not of frequent occurrence, yet it has long been known that the Gryllida^ as well as the Acridid(B are not exclu- sively vegetarian in their feeding habits. Thus, Walsh has recorded of Gryllus abbreviatus Serv. — a species closely allied to, and usually associated with, the above, that " whenever they gained admission into houses, after eating into apples and other vegetable matter that they found there, often concluded their repast by gnawing holes into boots, shoes, and woolen clothes."* He has also remarked : "All the crickets feed indiscriminately both on animal and vegetable substances. I have repeatedly noticed abbreviatus under dead putrid birds, etc."f Clothing long worn and charged with animal matter from the person and from extraneous sources, might naturally be supposed to attract crickets that have acquired the taste indicated above, Just as soiled clothing has occasionally been eaten by Dermestes lardarius, the larder beetle; but that new woolen clothing should be eaten in preference to old, can only be accounted for upon the supposition that a special attraction, in this case, was found in the animal matter belonging to the wool, or employed in its dressing, and remaining in the woven fabric. Trombidium. locustarum Riley. The Locust Mite. Please give me the name and history of the parasite that deposits its small, oval, red eggs near the base of the grasshopper's wings. — I. G. I., Adena, O., September 10th, 1891. The " small, oval, red eggs " of which inquiry is made, is the locust mite, Trombidium locustarum, Riley. It renders most excellent ser- * American Entomologist, 1, 1868, p. 53. t Practical Entomologist, i, 1866, p. 126. 180 Forty-fifth Report on the State Museum. vice — at times, of almost incalculable value — in the destruction of the eggs of the western locusts (commonly called grasshoppers), which it seeks when buried in the ground and eagerly devours. The young mites are very active little creatures, living at first in the ground where , they feed on decaying animal and vegetable substances. When the opportunity is given them, they crawl upon the bodies of the locusts Fig. 31.— Trombidium locdstarum.— a, mature larva when about to leave the -wing of a locust; 6, pupa; c, male adult; d, female adult; e, palpal claw and thumb; /, pedal claws; gr, one of the barbed hairs; h, the striations on the larval skin. (After Riley.) and attach themselves, in preference beneath the base of the wings, but sometimes, when unusually abundant, covering the entire body. While upon the locust, they are immature, being in their larval stage, and having only six legs. As they gorge themselves with the juices of their host, their bodies swell out into an oval sack-like form, almost concealing the legs, although they are long, and in this condition [rep- resented at a in the figure] they may very easily be mistaken, as in the above inquiry, for eggs. After they have completed their larval growth they drop to the ground, where they undergo two changes — first to the pupa [shown at b in the figure] and then to the perfect eight-legged form [shown at c and f?]. They pass the winter in the ground, and are said to be active whenever the temperature is a few degrees above the freezing. A detailed and interesting article on this mite from the pen of Professor Riley, from which the above facts and figures have been taken, is to be found in the First Atmual Report of the United States Entomological Com77zission, pages 306-311. This mite is not confined to the Central or Western States, but has been observed in New Hampshire preying in very large numbers, both on the eggs and the mature insect of the lesser locust, Melanopliis atlanis (Riley).* • Marlett, in Insect Life, ii, 1889, pp. 67, 68. INSECT ATTACKS -THEIR REMEDIES AND PRE- YENTIYES. The number of our raoi'e injurious insect pests is so large that com- paratively few have been treated of in the seven preceding reports of the State Entomologist. It is desirable that each should be presented to the agriculturists of the State of New York in such detail and length of notice as would meet the requirements of the more advanced farmers, fruit-growers, and gardenei's. In the main, this would be met in the presentation of the literature, history, description, illustrative figures, habits, life-history, distribution, and, above all, the best approved remedies and preventives, of the several species. A work of this magnitude, however, would require at least a score of years for its completion. In the meantime, it would certainly be of considerable service if there could be given to the public even brief notices of our more injurious pests, in which their features were sufficiently described for their identification, their transformations and more interesting habits stated, together with some simple methods by which their injuries can be prevented or lessened. A number of notices, embracing some of the above particulars, have been contributed by the Entomologist during preceding years to agri- cultural papers — notably to the Country Gentleman and New Mngland Homestead, in reply to inquiries received of the more common pests of the garden, orchard, and farm. As each of these is believed to contain matter of some importance and value, it may not be amiss to extend their usefulness by incorporating them from time to time in this series of annual reports, where they may serve some purpose (one would be, convenience of reference) until the time shall arrive when the insects of which they speak may receive more careful and studied consideration. With the above will also be included some communications made to individuals, relating to insects of somewhat general interest. Remedies foe the Pkach-Tree Borer. The following communication was received from a con-espondent in Waynesville, Ohio : I wish you, or some of your experienced correspondents, would give directions for destroying, and also for preventing, borers 182 Forty-fifth Report on the State Museum. in young peach trees. The principal danger seems to be while the trees are young and tender. If one has but a few trees, perhaps the best way would be to seai-ch the borer out and destroy it, but during a part of the life of this pest it is very small and difficult to find so close to the ground; besides, in large orchards it would be an exceedingly slow and expensive process. I see in the Scientific American, copied from the N. E. Homestead^ that an effectual treatment is to " make a mixture of wood ashes and water, in the proportion of one quart of ashes to a pail of water. Stir well; make a little ridge of earth around the tree, a few inches from it, and pour in the mixture. It will soak into the worm-holes, and will kill them every time." The writer says he has used it for years successfully. He says that it may be necessary to do it twice the first year, but after that a very little care will keep the trees free from them. For want of ashes a thin solution of lime will do, he says. Why not heap a quart of ashes around the tree and let the rains supply the water ? Now what I want to know is, whether this treatment has been sufficiently tested to justify me or any one else in depending on it in a large way — a thousand trees or more ? Would not an application of whitewash be as good a treatment as could be desired, after the trees are two or three years old — or thick soap-suds, applied with a brush or a rag? The first year the bark would no doubt be too tender for the whitewash. Is it not found that it greatly increases the life and vitality of the peach tree to shorten in the branches every year after the season's growth is completed? Peach trees are generally short-lived; it is desirable to prolong their lives if we caa, and such treatment will probably make them less liable to break down, owing to the disposition of the limbs to grow to great length, with most of the fruit far from the trunk of the tree. It is not a difficult task to control this insect, ^Egeria exitiosa, the Sannina exitiosa of many recent writers, if the proper means are Fio, 32, —The peach-tree borer, Sannina kxitiosa (Say): 1, the male moth; 2, the female moth. taken for it. It is possible to prevent its injuries to a great extent by the old method of searching for the presence of, and cutting out, the larvtw There are those who contend that the destruction of the insect is the only proper thing to do, since by the applica- Eighth Report of the State Entomologist. 183 tion of preventives you do not reduce its number, but only drive it away to unprotected orchards. A sufficient answer to this is, that there should be no unprotected orchards, and that the peach-grower who is too ignorant or indolent to employ the simple and inexpensive means by which his trees may be protected, does not deserve that they should give him remunerative crops. 9 \ Fig. 33.— Male and female moths of the peach tree borer, enlarged (after Emmons). [The male and female moths, which are quite unlike in appearance, are shown in Figure 23, in twice their natural size, taken from Dr. Coquil- let's " Our Injurious ^Egenans," in vol. v of the Journal of the Colum- bus Horticultural Society. Figure 33, after Emmons, also illustrates the same insects.] The treatment quoted above, of wood ashes and water placed in a funnel-shaped cavity about the tree, would unquestionably serve a good purpose in the destruction of the eggs and the young larvio, if applied a few days after the deposit of the eggs or their hatching. But as the period of egg-laying of the peach-tree moth extends over the months of June, July, and August, it would require too frequent an application of the ash remedy to render it reliable and practical. Carbolic Acid Wash. This wash has been tested for several years, and so far as we know, has never failed to give satisfaction. Several large peach-growers have used no other method of protection. Two or three formulas have been given for it, but probabl}^ the best is that presented by Mr. Bate- ham of Painesville, O., in the Country Gentlemaa, vol. xlv, 1880, p. 246, and also published, with others, in the Second Report oti the Insects of New York, 1885, pp. 24-26: "For an orchard of five hundred bearing trees we bu}' a pint of crude carbolic acid (or half as much of the refined), costing not over twenty -five cents; then take a gallon of good soft soap and thin it with a gallon of hot water, stirring in the acid, and letting it stand over night or longer; then add eight gallons of cold soft water and stir. We 184 Forty-fifth Report on the State Museum. have then ten gallons of the liquid ready for use. The wash should be thoroughly applied with a swab or brush around the base of each tree, taking pains to have it enter all crevices," Mr, Bateham gives for his locality (about 42 degrees of N, latitude), as the proper time to apply the above, during the last of June, if the weather is hot, or the first of July. He had never seen the moth depositing its eggs before the last-named date, and if eggs had been deposited a few days earlier, he claims that the wash would kill them at once. Carbolic Acid and Paris Green Wash. Mr. J, H. Hale, a successful peach-grower m South Glaston- bury, Conn,, has i-ecommended in a paper published in the Trans- actions of the Massachusetts Horticultural Society, for 1888 (Part I, p. 66), a wash for the prevention and killing of the peach-tree borer, which would seem, on some accounts, to be even preferable to the preceding. He rejaresents the egg-laying period of the moth to commence in the latter part of May, and continuing into September, On rare occasions he had seen the moth deposit eggs in the crotches of the larger limbs. Has this been observed, or the larvae found in such localities by any one else ? The objects sought in the wash are: first, to smooth the bark; second, to prevent oviposition; and third, to kill the egg or larva if oviposition has occurred. The exact proportions are not very important. To a com- mon bucketful of water take two quarts of strong soft soap, half a pint of crude carbolic acid, two ounces of Paris green, first reduced to a paste, with water and lime enough to form a thin paste that will adhere to the tree. A little clay may be added to assist in making it stick. Apply with a swab or brush before the first of June. Killing the Borer. Although the above is given as almost a sure preventive, Mr. Hale recommends that in addition, the tree should be examined in October, and where traces of the borer are discovered, as in exuding gum or the sawdust-like castings at the base of the tree, remove a little of the earth, scrape off the gum with a sharp knife, cut away the bark, and with a piece of wire follow up any channel that it does not seem best to cut open, crush Fio. 34.— Larva, cocoon, and pupa of ^ . .^ ^ i • i . .!.• Sannina KxiTiosACafter Emmons). or draw out the larva, which at this time will be from a half-inch to an inch long. [The full-grown larva, its cocoon, and the contained pupa are shown in Figure 34.] Eighth Report of the State Entomologist. 185 The Shaker Peach-tree Borer Wash. The followiug is the recipe of the wash in use by the thrifty Shakers of Shaker Station, Hartford Co., Conn., which has been sold for past years at three dollars, but has recently been communicated to the N'eto England Homestead : Fish oil, 3 pts. ; soft soap made from wood ashes, 3 pts. ; whale-oil soap, 2 lbs.; powdered sulphur, 2 lbs. Mix the oil with the whale-oil soap, beating the lumps up thoroughly into a perfect emulsion. 'Ihen add the soft soap and, after mixing this thoroughly, stir in the sulphur. The more perfect the mixing is done the better. These ingredients can be obtained at almost any country store, and ought not to make the cost more than sixty cents the gallon. One man can mix a barrel and apply it to five hundred trees in a day. The application should be made every spring from May 15th to June 1st, in latitude 42°. Preparatory to applying the above, it is recommended to remove with care, by the aid of a wooden trowel and broom, the ground for about a foot from the trunk, so as to lay bare the base and main roots. Examining them after three days, if any borers are present, they will be discovered at a glance by the oozing gum and their excrements or borings, and can be easily cut out with a sharp knife. After which, apply tlie compound with a paint brush to the cleaned roots, and up the trunk for eight or ten inches above the surface of the ground. Sprinkle on all the powdered sulphur that will adhei'e, and return the ground. Mounding. This method of protection is highly esteemed by some peach- growers. It is done by throwing up around the base of the tree, at any time before the deposit of the eggs, a mound of earth of about a foot in height, and pressing it closely to the trunk with the foot. In the following years, a few inches may be added annually. By this means the roots of the trees where they are given off from the trunk, are placed out of reach of the insect. The mounding is believed, also, to have a beneficial influence on the health of the trees, in prolonging their period of bearing and exempting them from disease. It has been claimed that this method has given entire exemp- tion from the borer attack, at the cost of a very little labor. A New Tree-Protector. A model of a device has lately been shown me which pro- mises to give complete protection for young trees from the attack of the peach-tree borer. A cylinder made of fine wire netting, about fifteen inches high, mounted on a galvanized metal base, gathered in at the top so as to adjust itself closely to the tree, opens at one side for passing it around the trunk, and is then secured and 24 ] 86 Forty-fifth Beport on the State Museum. fastened to the ground, and slightly into it, by a sliding pin. With this protection, the moth would be effe(!tually prevented from deposit- ing an Qgg upon or near the base of the tree. The cylinders could be quickly applied, and with proper care in housing them, they would last for many years. It is thought that they can be offered for sale at about twelve dollars the hundred. It is undoubtedly very beneficial to shorten-in peach ti'ees annually. It can be done in the autumn, or in the early spring, by clipping off at least one-third of the last year's growth. — Country Gentleman^ for June 4, 1891. In a communication to t\\Q Mural JVew Yorker, of October 17th, 1891 (page 736), Mr. J. S, Woodward, the ex-secretary of the New York State Agricultural Society, and a highly successful fruit-grower, con- demns the recommendation made in a late number of the same journal (page 593) for treating trees infested with the peach-tree borer, by piling wood ashes just about the body of the tree and on the roots after some of the surface soil has been removed. He had seen trees killed from leached ashes piled about them, and unleached ashes would be almost sure death, and besides, they Avould be effective, if harmless, only for a short time. Mr. Woodward gives the following preventive for the borer as being entirely safe, and as sure as it is safe: Take some dirt}^ soap — the dirtier the better, — and add to it sweet skim milk so as to make strong soap suds. Into this mix hydraulic cement (common w^ater-lime) in quantity sufficient to make a thick white-wash, and using a stiff brush or old broom, with this coat the trees from the ground or a little below, to from twelve to eighteen inches above, using plenty of the wash. This will form a solid coat of mail that no insect can penetrate, and unless broken Avith hoe, harrow or other tool, will last for a full year, or until the growth and expan- sion of the bai"k of the tree fills it with cracks. To eradicate borers already lodged in the tree, there is nothing so good as a sharp, strong knife and a sharp pointed wire. AnIchneumon^izkd Caterpillar — Intebbstivg Cask of Parasitism. Eds. Countrt Genttlesian. — Inclosed I send a peculiar worm found on my hop vine. At time of finding it was of a light green color, two and a half inches in length. Please name, and state whether it is in any way injurious to the plant. Last year I found on the same vine two worms, dark brown in color, with highly iridescent spots all over them, shining with metallic luster, while the worms themselves were almost as heavy as so much lead. I put them in a box, but neglected to send them until they became too shrunken for examination. Mrs. K. M. B., Wabash, Lid. Eighth Report of the State Entomologist. 187 The caterpillar taken on the hop vine comes in such a shi'iveled and broken condition that it can not be definitely named, but it is one of the Sphinges, and an examination of its head indicates that it is prob- ably that of Darapsa Myron. This species feeds on the grapevine and the Virginia creeper, but many larvoe leave their food-plants and wan- der to other vegetation after they have reached maturity. I do not know of any species of the Sphingidm that feeds upon the hop vine. The caterpillar had been attacked by an ichneumon fly, which had inserted within its body over one hundred eggs. These had hatched and fed to maturity inside of the caterpillar, when they ate their way out of the body, each through a separate hole, and spun upon its surface small, elongate, oval, white cocoons, ^J^^a MYRON^ccramS, fchn^u- standing on end, and, from their number, "^^^^^^ ^^ Apanteies congre- nearly covering the entire body, as shown in Figure 35. An unusual circumstance attended this particular brood of parasites. While engaged in the spinning of their cocoon, they were discovered and appropriated for the prey of another parasite — a small Chalcid insect, of less than one-half the size of the larva which it attacked. A Chalcid e^g^ was inserted in each larva — not a single one being over- looked. The cocoons were completed as usual, but their architects were thereafter made the food of their chalcid guests. As the result^ instead of the cocoons subsequently opening at their upper end, by a nicely fitting hinged lid for the escape of the ichneumon fly, in each instance the perfected chalcid — a pretty metallic-green creature, with iridescent wings — has made its escape through an irregular hole eaten near the end of the cocoon. The first parasite was in all probability Aptanteles congregatus (Say) ; the second, the chalcid, has not been determined. The " two worms with iridescent spots, shining with a metallic luster," can not be named from the characters given. Could they have been the dark brown chrysalids of the interrogation butterfly, Grapta inter- rogationis (Fabr.), ornamented with its silvery spots? This and the chrysalis of the comma butterfly, Grapta comma (Harris), are often known in hop yards as the " hop merchant," and are thought by some to foretell the future value of the crop, as the metallic markings may be more or less conspicuous. — Country Gentleman, for September 27, 1888. 188 Forty-fifth Report on the State Musevm. A New Onion Pest, Agrotis ypsilon (Rott.). The following editorial notice in the Canastota [N. Y.] Journal, of June 20th, 1891, refers to a new insect pest that had recently made its appearance and was the occasion of considerable alarm: Onion growers in the vicinity of Canastota are dismayed by the appearance of a pest that is making fearful havoc in some of the onion fields lying north and west of this village. The pest was first seen about a week ago. Growers noticed that their onions were getting thin and the plants appeared to be dying. Investigation, however, disclosed the fact that the plants were being eaten by a voracious dark-colored worm. The worms were of all sizes up to about one inch and a quarter in length and the thickness of a lead pencil. They seemed to work in spots, some parts of a field being overrun with the worms while in other places no traces of the pest could be found until they had migrated from the infested portions. Where they appeared, they were very numerous and quickly ate all the vegetation, including weeds. The muck land lying north of Canastota, and in the adjoining por- tion of the town of Sullivan, is peculiarly favorable to the profitable culture of onions, and great quantities of them have been raised during the past five or six years. Hundreds of acres were sown to the fra- grant vegetable this spring. Tfie work of the worms will be of incal- culable damage to the crop. The loss at present is estimated at one-fourth of the total aci*eage. Examples of the caterpillar, as they proved to be, were received from the editor, Mr. P. F. Milmoe, with request for their examination and for aid in the emergency. Reply was returned, under date of June 1 7th, as below : Editor of Journal. — Dear Sir: Yours of yebterday, informing me of the severe attack in the onion fields of your vicinity, and accom- panied by specimens of the depredator, is just received, and I send immediate reply. These sudden outbursts of insect injury are not infrequent occur- rences, and are often impossible to account for satisfactorily. On reading your note, I confidently expected to find, in this instance, a repetition of the attack made in the spring of 1885 upon the onion fields in Goshen and vicinity, in Orange county, N. Y., whereby many acres of onions were destroyed and serious losses inflicted, as described in Prof. Riley's Report to the Commissioner of Agriculture for that year (pp. 270-275), through the operations of the dark-sided cut-worm, Agrotis messoria Harris. The examples you have sent me show it to be a different insect — a cut-worm, but of another species. So far as I can determine from the larval characters, which are somewhat variable, and show marked differences of feature in the different stages of growth, this is the black Eighth Report of the State Entomologist. 189 cut- worm, Agrotis ypsilon (Rott.) — one of our most abundant species, common almost everywhere over the United States and Canada, and occurring throughout Europe, in the East Indies, the Hawaiian islands, and elsewhere. [The caterpillar and the moth thit it produces are shown in Figure 36.] A peculiarity of this species, and one that would seem to add to the amount of injury that it may cause the onion grower, is the unusually long time that it is present with us. It is almost the 'earliest of the Agrotis species to make its appearance in the winged state. I have taken it as early as May 30th, and in col- lections made by me " at sugar," have observed it every night through the months of June, July, and August, over half the nights of September, and con- J^'^.^^^^^'i^^lXZ^l^^^^l^^^. tinning until the last week of October. °^ ^^'^^^ <^' ''^^ '"°*^- CAf ter miey.) This would seem to indicate that its caterpillars are in the ground and continue their depredations through most of the spring and summer months. Whether this is the result of a long period of egg-laying of the moth, giving us the caterpillars at various stages of growth throughout the season, or if there are two or more ovei'lapping broods, we are unable to say. Of some of the cut-worms, we could safely predict that they would disappear from view and their injuries cease within a limited time — a week or two, — but of the black cut- worm, no such gratifying prediction can be made. It may speedily disap- pear or its trouble may continue for several weeks longer. The size of the worms at present will enable you to form some opinion of their future operations. Those sent me are nearly full-grown. If nearly all are of this size — an inch and one-fourth in length when at rest — I would expect that their work would cease within two weeks from this time, when they should stop feeding, bury in the ground and form a cell for their pupation, from which they would emerge later as the winged moth. But if many of the larvae are still small, you would be com- pelled to look forward to a longer battle with them. What shall be done with them to stop their ravages ? This is the important question with the onion growers. If I am able within a few days to go and look over the ground, I will do so, for then I could give you better advice. In the mean time I will suggest some means which, from the known habits of cut-worms, should afford very material relief. I presume that they feed mostly at night and spend the day within the ground near the plants at about an 190 Forty-fifth Report on the State Museum. inch below the surface. If the children, with a tin pail in hand holding some water with kerosene on its top, will go through the fields, and, working away the ground with their fingers, pick out the worms and drop them into the pail, much good will be accomplished. At Goshen, it was not unusual for a child to fill a quart pail in going over a field in this manner. Night collections, with the aid of a lantern, should be made, when the caterpillars, if small, will be seen at work upon the tops of the plants, or, if larger, cutting off the plants near the base f('r food' or traveling over the ground. If, as possible, they are too abundant for hand-picking (although at Goshen entire nights of whole families were devoted to the work), then I would advise spraying at night with a kerosene emulsion for killing them. The emulsion is easily made in the following manner : Dissolve in one gallon of boiling water, one-half pound of hard soap or a half- gallon of soft soap, and, by the aid of a force pump, mix with the solution one quart of kerosene until of a uniform mixture and wholly emulsified. Add to this enough water to make two gallons of liquid. This will give one part of kerosene to eight of the liquid, which should kill all the Avorms that it comes in contact with, without injuring the plants. If, however, found necessary, the proportion of kerosene could be increased. The above could be applied at night with a force-pump, or with any suitable sprinkler. Mr. P. C. Lewis of Catskill, N. Y., makes a pump which would be good for this purpose, at a cost of $5.50. A circular explaining it would be sent on application. At Goshen it was found that a simple solution of a quart of soft soap in seven quarts of water, sprinkled over the plants, protected them from attack and also killed those of the worms that it reached. This is so simple that perhaps it might be first tried before resorting to the other remedies. I trust that the above remarks will be adapted to present wants. Later, I will advise as to the best methods of preventing a recurrence of the attack another year, through preparation of the ground. I need hardly remark that the insect could not have been carried to your locality in the seed, as you suggested may have been done. You doubt- less had it with you in preceding years, but not in remarkable numbers. For some reason the present year has been very favorable for its mul- tiplication. The " black cut- worm " is known as a very general feeder, often proving destructive to strawberry plants, but I find no record of its injuries to onions. Very truly yours. I was unable to visit the locality in season for observation of the attack, but learned that it ceased a week or two thereafter, doubtless Eighth Report of the State Entomologist. 191 from the maturing of the caterpillars and their entering the ground for pupation. It is not improbable that this larva is cannibalistic at times. Mr. Milmoe had inclosed about a dozen in a close-fitting box to send to me, but being forgotten for a day, when opened, to his surprise only two remained. He had been told that the larger ones had been seen eating the smaller in the fields. The first of the caterpillars received pupated June ICth, and disclosed the moth, Agrotis ypsilon, July 12th — a pupation of twenty-seven days. A second became a pupa July 2d, and a third July 6th. The Stalk-borer, Gortyna >'itela, as an External Feeder. Mr. H. H. Rich, of Hartford, Conn., has sent, with inquiries, a cater- pillar which he had detected feeding on the tassels of his corn. It is the larva of Gortyna nitela Guenee, probably about three-fourths grown, as it is at maturity somewhat over one inch in length. It is a well-known pest of our gardens and fields, known under the common name of "the stalk-borer," and unfortunately is oneof those which makes its attack upon a large number of food-plants, quite varied in their character. In my First Report, where 1 have discussed the insect at con- siderable length (pages 110-116), its food plants, in the stems of which it lives, are given as follows: Tomato, potato, spinach, wheat, corn, dahlias, asters, lilies, spirjea, salvia, milk- T ^1 V I, 1 FiQ 37.— The stalk-borer, Gortyna nitela Gnen. The weed, castor bean, rnubarb, moth and its caterpillar. (After Riley.) chenipodium, peach-twigs, currant-twigs, rag- weed, and hearts-ease. It also eats the fruit of the tomato and strawberry, and bores into the cobs of ears of corn, as well as in the stalk. The above list will serve to show what a general feeder it is, and that it rarely appears except as an internal borer in stalks, stems, and twigs. It has often been sent to me in potato stalks and in the stalks of young corn, but I have never met with it before as an external feeder. Walsh and Riley record it as boring through the cob of growing Indian corn, and strangely confining itself to that portion of the ear, and also as boring into the stem of the same plant. Miss E. A. Smith and Professor French have recorded its operations in the stalk of young corn, and other writers have mentioned like injuries from it. 192 FORTT-FIFTH REPORT ON THE StATE MuSEUM. The caterpillar may be easily recognized by its head, first segment, and anal plate, being of a wax-yellow color, and its purplish-brown body, conspicuously lined with three white stripes, of which the central one is continuous from the first to the last segment, while the side ones are interrupted over the third to the eighth segments. A black band borders the side of the anal plate and the first segment and crosses the side of the head; the three pairs of thoracic legs are glossy black, the others (prolegs) are whitish. The caterpillar and the moth into which it develops are shown in Figure 37. In Professor J. B. Smith's recent Catalogue of the Noctuida? of Boreal America, this and its allied species are referred to the genus Hydrcecia. The example sent is darker colored than any I have previously seen, being almost black. It manifests nothing of the restlessness and apparent timidity of those that I have taken from burrows The present attack is of entomological interest rather than of economic importance. It probably will not occur in sufiicient number on the tassels to prevent or even interfere with the proper poUenization of the plants. In the pieces of the tassels sent, as showing the operations of the caterpillars, a few of the flowers (staminate) have been nearly con- sumed and others partly eaten into, but the resultant injury will be so slight that no anxiety need be felt, in this instance, on account of the presence of the caterpillar, and no remedy for it need be suggested. (Neio England Homastead, for July 13, 1889.) The Cow-hor.v Fly in New York. A letter received from Miss Drake, of Demster, Oswego county, in the latter part of August, of the present year (1891), announced the presence of this fly on farms in that locality. In addition to replying to her request for information, the following notice was sent to the Osioego Times, and was published in the semi-weekly edition, dated September 4th. Hon. John A. Place : Dear Sir : — I am sorry to be obliged to announce the advent in your county of a very injurious insect pest, which is destined to increase and do much harm to the dairy interest, whatever efforts may be made to arrest its spread. With timely warning, however, and a general effort to prevent the increase of the pest, its injuries may be materially lessened. Eighth Report of the State Entomologist. 193- The newcomer is the cow-liorn fly, Hmmatohia serrata R, Desv. Its- introduction into your county is quite recent, and it was doubtless- brought by one of your raih-oads — probably the R., W. & O., which' traverses the northern part of your county, as it was reported to me under date of August 25th from a farm at Demster, through which the? above-named railroad passes. The fly is armed with a long, stout, sharp proboscis which it thrusts into the skin of the cattle where it is the thinnest and sucks the blood. In general appearance it resembles the common house-fly, but it is smaller and more closely allied to the biting fly, Stomoxys calcitrans, which appears in autumn and attacks animals and men, often entering our houses and inflicting a sharp, stinging bite through the stocking or elsewhere on the leg. It was imported from France a few years ago, and was first noticed, in Pennsylvania, in 1886. For the past two years it has been abundant and troublesome in New Jersey. It occurs also in Delaware, Maryland, Virginia, and Ohio. In the early spring of this year it had extended into one of the southeastern counties of New York bordering on New Jersey. Looking for its gradual spread through our State, I was greatly sur- prised to hear that it was present in large numbers in Oswego county. Although the account given me of its operations evidently pointed out the insect, yet I felt some doubt until, at my request, examples of the fly were sent to me. Replying to a letter from Miss Drake, of Demster, who first informed me of the presence of the fly on their farm, I stated that if it was, as I supposed, the horn fly, it could be recognized by its congregating in large numbers upon the base of the horns. Answer was returned: "They annoy the cows by getting on their horns and between them,, but can not say that they prefer those places, as sometimes it appears that they literally cover the entire body, especially on the back and shoulders. Our neighbors are all ti'oubled with them, and all the cows are shrinking of their milk." In a letter received this morning, I have intimation of the occurrence- of the fly in Oneida county, and that it had made its appearance there- a year ago. It seems strange that interested parties will not at once send notice- to the State entomologist of the appearance of any new insect pest, for if commenced in time, means may often be taken to prevent, the- spread, or rapid multiplication, of newly introduced insect pests.. 25 194 Forty- FIFTH Report ok the State Museum. Mr. A. J. Fly, of Delta, Oneida county, writes as follows: I write to you for information in regard to a, fly, which made its appearance in these parts about a year ago, and is proving a source of much d image to the dairymen and of suffering to the stock. The fly his increase 1 very fast an 1 attacks the cattle in swarms, causing some- times large, raw sores on the shoulders and by the root of the tail, and also by the navel. They also cover the horns at times. They apparently a.tack fat cattle as readily as those in poor flesh. White and light colored «cattle do not seem to be as much attacked as the black or dark ones. "■On spotted cattle the flies are sometimes thick on the black spots, while i^there are hardly Siuy on the white. The fly seems more hardy than our • common one, and takes more to kill it. If tliere is anything that can be done to get rid of this plague, our dairjanen would be glad to know ut, and avail themselves of the information, that they may relieve their • cattle which are suffering greatly day and night. The injuries from the attack of this fly do not result in the death of the infested animals, as was first reported, but they occasion large sores upon the body in various places, and from the irritation and inflamma- tion that the myriad flies cause, there follows a great falling off in the amount of milk given — variously estimated at from one-third to one- .half. The cattle also lose materially in flesh. 'In New Jersey it has been found that the fly was most troublesome iin June and early July, and that after the middle of August it gave • comparatively little trouble. But even if you are to escape from any TS^rious further liarm from it this year, you should d ) what you can to prevent its continued multiplication. Knowing that tlie fly deposits its eggs in the fresh droppings of the cattle, and mostly during the night, and that it lives and matm-es therein, I would urgently recommend that every morning, in infested localities, these droppings be carefully and thinly spread in the fields, so that it may quickly dry. The eggs and the larvae would die in the crs. (After Fiteh.) Fitch) legged " worm, it may be desirable to state that the first-named is a small (usually less than an inch in length), slender, flattened creature, with shining surface, and often of a horc-color or pale brown or yellowish shade; its texture is tough and leathery. The first three segments of tlie body are each furnished with a j^air of rather long four-jointed legs, while the last segment bears a single retractile proleg. Figures 38 and 39 are rude rei^resentations of two of the common species — Figure 38 being the Agriotes mancus of Say (regarded by Dr. Fitch as A. truncatus of Melsheimer), and Figure 39, Melanottis com- Eighth Report of the State Entomologist. 199^ munis (Gyll.). The perfect insects into which they develop — known from their habit, when placed on their back, of springing into the air in order to regain their feet in the fall — as "snap- ping-bettles," are represented in part by Figure 40. Figure 41 shows, in enlargement, one of the wire-worms in the act of burrowing into and feeding on a kernel of corn. Figure 42 represents one of the common cut-Avornis, Agrotis clandestina, in the Avell-known curled attitude that it assumes upon being unearthed. / Figure 43 is one of the thousand-legged worms — fig. 4o.— Melanotus JuluS COeruleocinctuS Wood. communis, natural size- . , £ ^^ c ■^ £ and enlarged. (After Ihe Wire-worms — members or tJie lannly ot Fiteh.) Elateridcn — are very numerous in species, but the early stages- and life-histories of but a fe^v have been studied, and even those are imperfectly known. Their faithful studr is a great desideratum, but unfortunately the difficulties that it presents has deterred most of our entomologists from its prosecution. The Country Gentleman has presented its readers with many excellent articles on Aviri- worms, remedies for them, etc., which may be con suited to advantage by those who are sufferers from their depredations. Among the.se, the following issues may be cited: May 8, 1877, p. 281;. June 14, 1877, p. 377; August 5, 1877, p. 220; December 11, 1879, p. 793; February 8, 1883, p. 105; May 3], 1883, p. 441; November 20, 1883, p. 961; April 12, 1888, p. 284. There are also many others, which may readily be found by turning to the elaborate and careful indexes that accompany each volume. — C.-G., November 29, 1888. Fig. 41. — A wire-worm at- tacking corn. (After Fitch.) Fig. 48. — The w-marked cut-worm of agrotis CLANDESTINA. Fig. 43 .— Thousand-legged worm, Julus currow, ascending at an angle of about ten degrees. The perfect insect emerges from the tree above its point of entrance through an opening which can be probed horizontalh^ for three or four inche'^, the mouth of which is smoothly cut and somewhat elliptical, the broadest diameter Ijeing about .35 of an inch. One maple which I have examined, of about ten inches in diameter at the base, which has been more seriously afi^ected than others, and probably the first to be attacked, has been nearly destroyed. Several of the grubs had commenced their ravages side by side, and by their ainited cuttings have in places exposed the trunk for over a hand's breadth The tree has been attacked in various places from above its first limbs nearly to its base, — the injury extending beneath the surface >of the ground. The entire circumference of the tree has been grooved, Eighth Report of the State Entomologist. 205 although not continuously. Circulation is still maintained by windins; around and among the furrows; but one more season's work will, it is believed, take the life of the tree In a row of maples bordering a lawn scarcely a single tree is entirely exempt from injury — all apparently the work of this grub. If these injuries are to continue and increase, and I see nothing to prevent it, our maples, which we prize so highl}'-, will share the fate of the locust and be abandoned to the borer as too unsightly a tree for ornamental use. The " beautiful Clytus " is a difficult insect to control, and very many of the fine old maples, which have oi-namented our streets and afforded us so agreeable shade, have been or are being killed by it. A few years ago it was a source of much pain to me to see at Benning- ton, Vt., the large number of old maples that were standing dead upon the streets or rapidly dying from the merciless burrowing of this borer that had scarred and excavated their trunks. Recently the same ravages, although not as yet to the same extent, were observed by me at Glens Falls, N. Y. Probably the best method of arresting the ravages of this pernicious borer wotild be to Avatch for the commencement of the operations and kill the young larva. The eggs are laid in July and August, [The means communicated to the lady for finding and killing the borer were virtually the same as those given in the reply to Mr. Her rick, and therefore need not be repeated here.] The Squash-bug, Anas a. tristis (De Geer), A correspondent desires to know what is best for the destruction of the black squash-bug, Anasa tristis. Can Paris green be used with safety ? If not, what can be used quickly and safely on an acre or two of squashes ? Paris green is of no service against the squash-bug, or the many other bugs of the Order of Hemiptera that take their food through a proboscis from the interior of plants. The best remedies, so far as known at the pre- sent, for the squash-bug are found in trap- ping and killing the females before their oviposition, and in the destruction of the eggs. Some success has attended experi- ments made for preventing attack, by the employment of strong-smelling substances, as for example, dipping corn-cobs in gas-tar and thrusting them in the ground among fio. 46.- The squash-bug.-^ANASA the plants, and occasionally renewing tristis -enlarged one-half diame- , ter; head and beak still more the tar. enlarged. 206 Forty-fifth Report o.v the State Museum. The first appearance of the bugs among the plants should be watched for, that operations against them may be promptly commenced, — or what may be^ntill l)etter, traps should be arranged for them a little in advance of their expected time of coming. In the Northern States tliey geaerally come abroad from their winter hiding places tow-ird the latter pai't of June. The traps may be pieces of bark, chips, bits of wood or strips of board, laid upon the ground near the hills. It is claimed, by some that the best possible trap is found in the leaves stripped from the loM^er part of the plants and spread beneath, as the insects are par- ticularly fond of the juices of the wilted foliage. The traps should be turned over and examined morning and evening, and the bugs which have hidden beneath them for the day (coming abroad at night for the deposit of their eggs), captured and destroyed. In addition to the daily examination of the traps, careful inspection should be made of the underside of the lower leaves for the patches of Qo-cr^ that may be deposited on them, which when found are to be crushed. The eggs may be recognized by their being of a dull orange color, flattened on their two sides, and occurring in clusters. Asthe female does not deposit all of her eggs at once, and as fresh bugs continue to make their appearance for the space of two or three weeks, the daily search may be advantageously continued for that length of time and as much longer as the life of the ovipositing female is extended beyond it. Later, while searching for the eggs, companies of the ^oung squash- buo-s will be found on the leaves, each with a green body, the head and tliorax black, and the antenna? pink. When two or three days old, the color of their body changes to ash-gray, and the others portions to black. The employment of the above remedies involves considerable labor, but where the insect is unusually numerous, it will be amply repaid. If commenced in season and faithfull}^ continued into July, much of the accustomed damage of the notorious pest, will be prevented, and but few of the mature forms with their increased posver for injury will be found during the months of September and October. ■ Care should be taken not to permit the bugs to gather around the base of the main stalk, as they are sometimes wont to do ( for sucking its juice) in such number as to girdle it. This may usually be prevented by drawing awa}' some of the ground from around the stalk and applying a mixture of dry ashes and salt. Without this precaution, it is said that the bno-s will at times burrow into the ground out of sight where they feed securely and unsuspectedly on the sap of the plant. High fertili- Eighth Report of the State Entomologist. 207 zation, will of course, assist materially in the ability of the plants to reust the attaok tnide ap)u th3aiby this perniciois insect. ( Country Gentleman, for JaTiuary 8, 1891.) The Hop-vink Aphis axd Remedies. At the request of the editor of the New England Homestead for an article upon the best methods known for controlling the hop-vine aphis, the following notice was communicated, and was published in the issue for May 2, 1891. It was copied in a number of other papers in the hop districts of the State: The one great uncertainty in the successful cultivation of the hop crop is its liability to attack and destruction by the hop-vine aphis — sometimes known as "the fly" or "the green fly." Although this insect is not entirely absent from our hop yards in any year, yet its multiplication and the excessive injuiy that it frequently inflicts is dependent upon atmospheric and meteorological conditions. Unfor- tunately these can not be predicted, and, therefore, the hop-grower usually defers action that would serve to prevent aphis multiplication until the attack has been made in force — can not be wholly arrested, and can only be mitigated at a great expense. Hop-vine Aphis in Europe and America. The hop-vine aphis, Phorodon humull (Schrank), is an European pest, which was first observed in the United States in 1862. For a long time it has been allowed to work its ravages in this country, in years of its abundance, without efi^ort made against it. Quite different has been the course pursued in England, where no hop-grower attempts to grow a crop without his regular " hop- washings." Its Iiife-history Discovered. Four years ago (in 1887), the life-history of the insect was, for the first time, worked out, in the hop 3'ards of New York, by the ento- mological division of the U. S. Department of Agriculture. With this knowledge at our command, it is safe to say that, xoith ])roper care and without great expense, our hop crops can he saved from aphis destruction. 208 Forty-fifth Report on the State Museum. The iasect, deserting the hop yards in the autumu, passes to plum trees, on the smaller twigs of which its eggs are laid and survive the winter. Hatching in the early spring [and producing the " stem-mother," shown in Figure 47], three broods are developed on the plum, the third brood being winged. This brood at once takes wing, deserts the plum trees, and flies to the hop yards. This flight takes place in the month of May — in England it has been noticed on the 28th of May. The precise time would, of course, vary with the temperature of different seasons, Fig. 47. — The hop-vine aphis, but could be ascertained by a careful ex- Phorodon HujruLi, the stem- . /. i i i -i •- mother, enlaigred; head and aminatlOU of the hop liSVCS CiaiiV at about antenna still more enlarged. (From Insect Life.) the usual time for its appearance. When to Attack the Aphis. The winged aphides [the " migrants," shown in Figure 48] would be found at first on the upper leaves of the outer rotes of plants in the yard. This is the time, without any delay, to commence operations FiQ. 48.— The hop-vine aphis, Phorodo.v hdmuli, migrant from plum, of the third genera- tion, enlarged; head still more enlarged, (^toxsi Insect Life.) against them. They should be killed, and thereby prevent the enor- mous progeny to which they would give rise in the nine rapidly suc- ceeding generations said to have been observed on the hop -plants. This multiplication, in favorable seasons, is simply appalling — almost incredible, but it need not be permitted. It may be prevented by killing the plum-tree migrating brood while upon the outer rotes of the yards. Eighth Report of the State Entomologist. 209 How to Kill the Aphis. The best insecticide for use is believed to be kerosene emulsion, pre- pared after the formula which has been so often given in leading agricultural journals. The emulsion is made as follows: Take of kerosene, two gallons.; common soap, a half-pound; water, one gallon. Dissolve the soap in the boiling water, and, after removing from the fire and while yet boiling, add the kerosene, emulsifying the mixture by pumping it through a force pump with a spray nozzle into the same vessel until it assumes the appearance of thick cream and the oil does not rise to the surface. For ordinary use, on trees, etc., dilute the above mixture with nine parts of water. For the hop- vine aphis one part of the emulsion to twenty-five of water should be used, as a greater strength is liable to blacken and injure the leaves. Properly applied, by spraying with a suitable force pump through a fine nozzle, it will not fail of killing every aphis with which it comes in contact. It is all important that it be applied so as to bring it in contact with each insect, as it kills only by this means, and not, as do the arsenical mixtures, by depositing the poison on the leaves to be subsequently eaten by the insects. All plant-lice are sucking insects, feeding only on the sap of the vegetation that they infest. As the kerosene emulsion requires some labor in its preparation, pos- sibly some of our hop-groAvers would prefer to use the hop wash which, for a long term of years, has been successfully used by the English hop-growers, and we accordingly give the formula for it: One hundred gallons of water (if hard water, with soda added). Four to five pounds of soft soap. Six to eight pounds of quassia chips, first steeped in cold water and afterwards steamed or boiled. The eflicacy of this washing has been clearly demonstrated. Hop- growers who have sprayed with it in England have grown «rops of 700 to 900 pounds per acre, while those not using it grew nothing, or next to nothing. Repeat Spraying as Often as Necessary. As the plum tree brood does not migrate en masse at the same time, a second spraying should follow the first in a few days thereafter. Watch should be kept for the advent of newcomers, either through flight or by reproduction, as the new broods occur at intervals of a few daj^s, and are therefore frequent during the season. The spraving should be repeated as often as is necessary to prevent the multiplication which wotild otherwise destroy the crop. 27 210 Forty-fifth Report on the State Museum. Preventives of Hop-vine Aphis Attack. There are at least three methods by which much may be done to prevent attack: 1, Cut down and burn all the wild plum trees in localities where hops are grown, so as to afford fewer places where the hop-vine aphis may oviposit in the autumn. Include in this such cultivated plum trees as are not yielding paying crops, particularly if infested with black-knot. 2, Spray all cultivated plum trees with a strong kerosene emulsion during the winter, or in the early spring before the leaves are out, in order to destroy the eggs of the hop-vine aphis which maj^ have been deposited there the preceding autumn. The kerosene should penetrate and quickly kill all the eggs which it reaches.* 3, Collect and burn all the refuse (leaves and vines) of the hop-yard a3 soon as the crop is picked. At this time many of the male aphides, which are the last to leave the yard, are still upon the vines, and in the burning, it is believed, that their numbei" may be reduced to the extent that enough will not remain to fertilize all the females that have already taken their departure. The mating occurs largely, if not Avholly, upon the plum trees. The above directions involve watchfulness and labor, but the demand they make is trifling in comparison with the value of the crop that may thereby be rescued from destruction. The figures in the above are from the Entomological Division of the U, S. Department of Agriculture, obtained through the kindness of Dr. Riley. The Melon Aphis, Aphis cuoumeris Forbes. Lowell, Mass., August ^Ith. Eds. Country Gentleman. — I send you by mail a box containing some muskmelon leaves and shoots that have been attacked by what seems to be a kind of plant-louse. Last season they destroyed my little plat when the melons were half-grown, the vines appearing as if touched by frost. Can you tell me what the creature is, and what means could be used as a preventive? I presume that it is too late now to save the ^•ines, though I did not notice any trouble until yesterday. — T. C. B. The aphides or plant-lice, from the fortnight's delay in reaching me, had become shriveled and discolored, but there is scarcely a doubt that they are the species which was described and named by Professor Forbes, * Late experiments have shown it to be doubtful if aphis eggs can uniformly be killed by spraying with the emulsion. It would certainly be effective if made to reach the young aphides soon after their coming from the egg. Eighth Report of the State Entomologist. 211 ' .i4f State Entomologist of Illinois, as Aphis cucumeris, and was treated of by him at considerable length (nine pages) in the Twelfth Report on the Insects of Illinois, published in 1883. Fig. 49.— The melon aphis, Aphis cucumkris, winged oviparous female. (After J. B. Smith.) It is there characterized as " a minute, very sluggish, green or green- ish-black insect, occurring in immense numbers from spi'ing to late summer, on the underside of the leaves, and also upon the roots of muskmelons, cucumbers, squashes, and other cucurbitaceous plants, causing the leaves to curl and shrivel and lose their color, and greatly hindering the development of the plants." It further appears, from Professor Forbes' account, that it was first observed in Illinois, in 1880, as doing much injury to nutmeg and muskmelon vines, and also to the cucumber vines. Early in the spring of 1882 it made an overwhelming attack on both watermelons and muskmelons, in many localities in Illinois, entirely killing the plants. Cucumber vines growing in the vicinity were not greatly injured; squash vines to a slight extent. In some instances, where the vines were not at once killed by exces- sive numbers, the plant-lice disappeared from them about the 1st of August, permitting the plants to rally somewhat and yield a partial crop. Many of the insects had been parasitized, and their dead bodies, by thousands, were found clinging to the leaves. This insect has not, so far as we know, been previously reported from the eastern part of the United States. It is to be hoped that in its presence here it may be met by the same parasitic attack that checked its increase at Normal, Illinois. The operations of the parasite — a 212 If ORTY- FIFTH EFFORT ON THE StATE MuSEUM. m inute insect that deposits its eggs within the plant-louse — may readily be recognized by the aphis becoming greatly swollen in size and rounded, and changing to a pale brown color. In the absence of parasitic attack, Professor Forl»es, as the result of experiments, recommends the following: Sprinkling the underside of the leaves with road dust. In experi- ments, Avhere it adhered, the insects were killed, or disappeared. Dusting the underside of the leaves by means of a powder bellows, with pyrethrum powder. After tAventy-f our hours all the insects had fallen from the leaves, and were dead and dried up. Spraying with a kerosene emulsion killed all it reached, and cleared many leaves entirely. Tobacco smoke, forced by means of a common bee-smoker, under large pieces of canvas (hay-caps) covering a section of the plants, and keeping the Space beneath w^ell filled with smoke for ten minutes, killed seventy-five per cent of the insects. For garden use, where the plants are comparatively few, the last- named remedy is deemed the most feasible. It is advisable whenever this attack occurs, to destroy the old vines and leaves, within which the insect may be hibernating, and not to grow the same crop on the same ground the following season. The muskmelon " shoots " submitted, show a different and a quite interesting form of attack, in which the smaller leaves have been trans- formed into small, irregular, subovate, downy galls. These have given out their insects, which are found to be a species of Cecidoniyia. As I can find no mention of Cecidomyia attack on any of the Cucurbitacem, the insect is probably new to science. If it proves to be so, it might appropriately be named Cecidomyia cucunieris. It will be noticed hereafter. {C. G., for September 27, 1888.) Melon and Strawberry Pests: Aphis cdcumeris and Corimel^na pulicaria. Eds. Country Gentleman. — Be kind enough to inform me how to prevent lice from eating cantaloupe or cucumber vines; and, if spraying will do any good, what to spray with to destroy the insects and not injure the vines. There is also an insect that stings the stem of straw- berry blossoms about half an inch from the carp; then they dry up and fall off. Is there anything to prevent this ? H. H. Wellham's Cross Roads, Md. Eighth Report of the State Entomologist. 213 The " lice " infesting melon and cucumber vines are probably the cucumber aphis, Ajyhis cucumerls Forbes. It may be killed if kerosene emulsion, pyrethrum powder or pyrethrum in water, fish-oil soap, or strong tobacco water, is applied to it. But as it usually occurs on the underside of the leaves, and causes them to curl irregularly, it is almost impossible to reach the insects by ordinary spraying. If a knapsack pump, provided with a rod and a Vermorel nozzle, be used, the liquid could be thrown very effectually upon the lower surface of the leaves. The eggs of this aphis are deposited in the autumn, and probably on the dead leaves and vines. If these, therefore, are collected and burned each year, the attack of the insect would be largely prevented. The insect that punctures the blossom-stems of the strawberry is probably " the flea-like negro-bug," Gorimelwna pulicaria Germ. (If possible, examples of insects of which informa- tion is desired, should be sent with the inquiry.) It is the size of some of the flea-beetles — about one-tenth of an inch long, and is shining black with a white stripe on each side. As this little bug has a large number of food-plants, as the rasp- fig. so.— The flea-iike , , . 1 „ 1 1 negro-bug CoRiMELaiNA berry, cherry, qumce, garden flowers, and several pulicaria. CAfter Riley.) weeds of which it is very fond, it is difficult to bring it under control. The same substances recommended above for the aphis would probably kill it, [The insect is shown in Figure 50.] Professor Riley states that this troublesome and destructive insect is particularly partial to two weeds, upon which it breeds, and beneath which it may often be found in the month of June in countless num- bers— viz., the red-root or New Jersey tea-plant {Geanothus ameri-