oon sai S rae e yates ecto Bsn Soe: Seer ee eresnhit Sree ape rien uwenzori Expedition 1952 Volume I, Number 6 _ Geometridae _by _ D. S. FLETCHER m London ‘of the Trustees of the British Museum yA 6 Geometridae By D. S. FLETCHER British Museum (Natural History) The Geometridae collected during the British Museum expedition to East Africa in 1934~5 and during the expedition to Ruwenzori in 1952 together consist of 1407 specimens representing 239 species and subspecies, of which 76 proved to be new to science. Seven have already been described elsewhere and 69 are described in the following pages. Of the 239 species collected, 182 are from Ruwenzori and $7 from various localities in Kenya and Uganda visited by the two expeditions. Certain additional material from the unnamed accessions in the British Museum and specimens collected by A. Holm during the Swedish expedition to the mountains of East Africa in 1948 and kindly loaned by Dr. René Malaise of the Riksmuseum in Stockholm have also been included in this paper. As already stated in the general introduction to this series, the pattern of collecting on Ruwen- zori during the 1952 expedition followed closely the different vegetation belts found on the mountain; the following specific lists illustrate the marked differences found in the Geometrid faunas of these successive belts, especially in the distribution of the subfamilies. It will be seen also from these lists and from the distribution table that follows them, that the species occurring in the savannah and the partially cultivated elephant grass belts are largely of the subfamilies Sterr- hinae and Ennominae and, as one would expect, have a wide distribution both to the east and to the west of Ruwenzori. For this reason, very little time was devoted to collecting in the savannah and the species listed from that region are few. In the montane rain forest, immensely rich in species though sparse in individuals, the number of species having a wide distribution is proportionately lower and a number of species occur there that are so far recorded only from the Western Rift Valley. The bamboo belt, which lies between the montane rain forest and the ericaceous belts, appears to be a most effective ecological barrier, for there are only four species of Geometridae known to occur on both sides of it. Apart from one species of Sterrhinae, Scopula latimediata sp.n., all the species of Geometridae occurring above the bamboo belt belong to the subfamily Larentiinae. The occurrence here of two species of the genus Haplolabida gen.n. is of interest; both are repre- sented by subspecies on Mount Kilimandjaro on the eastern side of the Eastern Rift Valley; the other species in the genus occur in S. Africa. Apart from these and Eupithecia dohertyi Prout and from Eupithecia proflua subvincta Prout, recorded previously only from the Aberdare Range in Kenya, the distribution of those species occurring in the ericaceous belt is confined to the Western Rift Valley. The only species of Geometridae occurring in the alpine belt are the remarkably abundant, I TH 78 Ruwenzori Expedition, 1952. Volume I, Number 6 nocturnal Xanthorhoe alluaudi hancocki Prout, the diurnal species X. w. wellsi Prout, X. wellsi capnoessa subsp.n., X. heteromorpha albicera subsp.n. and X. h. heteromorpha Hampson; these species have brachypterous females, as do their relatives in the ericaceous belt, X. barnsi Prout and X. a. alluaudi Prout, and may prove to be endemic. The colour names used in the descriptions of the new species are taken from Ridgway’s Color Standards and Color Nomenclature. Below each previously described species is given its known distribution up to the time this paper was prepared. All specimens, unless otherwise indicated, are in the British Museum. Geometridae of Ruwenzori arranged in the order of the successive vegetation belts. GEOMETRINAE Neromia quieta Prout STERRHINAE Sterrha pediculata sp.n. LARENTIINAE Disclisioprocta natalata Walker GEOMETRINAE Thalassodes albifimbria Warren Prasinocyma scissaria degenerata Prout P. simiaria Guenée P. angolica Prout P. geminata Prout ‘ Chlorissa apographa Prout C. eborilitoris Prout Omphacodes pulchritacta Prout STERRHINAE Scopula cinnamomata Fletcher S. sevandaria Swinhoe S. plionocentra Prout S. nigrinotata Warren S. fragilis Warren . silonaria Guenée . laevipennis Warren . caducaria Swinhoe . internata praeruptorum Prout . minorata Boisduval . internataria Walker . serena Prout : seydeli Prout . sebata sp.n. Sterrha burtti sp.n. ANNHNHRNHANN Savannah Elephant Grass Belt ENNOMINAE Epigynopteryx subspersa Warren Buzura stringeri Prout Colocleora divisaria Walker C. poliophasma sp.n. Ochroplutodes bifurcata sp.n. S. arcuata sp.n. S. laciniata Warren Se pulveraria Snellen S. prucholoma Prout S. tornivestis Prout Rhodometra sacraria Linn. LARENTIINAE Xanthorhoe heliopharia Swinhoe Ecpetala obtusa celaena subsp.n. Piercia ansorgei B.-Baker P. edwardsi sp.n. Collix foraminata Guenée Eupithecia rediviva Prout E. connexa Warren E. resarta Prout E. kibatiata Debauche Trimetopia aetheraria Guenée Asthenotricha barnsae Prout A. psephotaenia Prout Eois rectifasciata sp.n. ENNOMINAE Epigynopteryx curvimargo Hampson E. subspersa Warren E. unipunctata Warren Sphingomima cinereomarginata Holland bd bd bd De bd De De ANnnRAHN Xanthisthisa tarsispina Warren Tephrina exospilata Walker Semiothisa normata Walker Omphalucha katangae Prout Aphilopota calaria Swinhoe Menophra obtusata Warren GEOMETRINAE Hypocoela turpisaria Swinhoe Prasinocyma caecata sp.n. P. crenulata sp.n. P. triangulata sp.n. P. inornata sp.n. P. inconspicuata sp.n. P. jefferyi Prout P. stictimargo Warren Chlorissa eborilitoris Prout Cosmostolopsis simplex rubropunctata subsp.n. STERRHINAE Scopula candidaria Warren S. calcarata sp.n. S. macronephes sp.n. S. magnipunctata sp.n. S. cassiaria Swinhoe S. johnsoni sp.n. . alma Prout . suda Prout . stephanitis Prout . lugubriata sp.n. . Internata praeruptorum Prout . incalcarata sp.n. LARENTIINAE Xanthorhoe phiara Prout X. procne Fawcett . transcissa leopoldi Debauche . transjugata Prout . brachytoma Prout . oculata sp.n. . callirrhoda sp.n. . trientata Warren . exorista Prout X. rufivenata sp.n. Mimoclystia euth ygramma Prout M. thermochroa Hampson Geometridae M. dnophera plagifera Prout Lomographa serrata sp.n. Encoma irisaria Swinhoe Zamarada phaeozona Hampson 79 Amnemopsyche chrysoptera Hampson Montane Rain Forest Belt Ecpetala euthypora Prout E. obtusa celaena subsp.n. E. indentata Warren E. caesiplaga Prout Piercia cognata sp.n. P. suavata sp.n. P. chlorostola Hampson P. lichenaria sp.n. P. edwardsi sp.n. P. jacksoni Fletcher P. rufimaculata sp.n. P. albivirgulata sp.n. P. hargreavesi Prout Eupithecia d. dohertyi Prout E, dohertyi fulvata Fletcher E. fuscata Fletcher . nigropolata Fletcher . Somereni Prout . connexa Warren resarta Prout . regulosa Warren . kibatiata Debauche . semipallida Janse . undiculata Prout E. jeanneli fuliginata subsp.n. E. electreofasciata sp.n. E. devestita Warren E, celatisigna Warren Chloroclystis protrusata Warren it tts ty tt ty te Asthenotricha strangulata Herbulot A. u. unipecten Prout A. straba Prout A. polydora Debauche A. pythia Debauche A. lophopterata anisobapta Prout A. proschora sp.n. A. dentatissima Warren 80 Ruwenzori Expedition, 1952. Volume I, Number 6 A. barnsae Prout A. serraticornis Warren A. psephotaenia Prout Eois rectifasciata sp.n. ENNOMINAE Mauna diasporas Prout Epigynopteryx curvimargo Hampson E. unipunctata Warren E. termininotata Prout E. stictigramma Hampson Sphingomima viriosa Prout Hypochrosis wittei Prout H. poliostola sp.n. Psilocerea semifacta Prout P. cneca Prout P. turpis rutila subsp.n. Xanthisthisa fulva Warren X. tarsispina Warren X. holmi sp.n. Gonodontis aemoniaria eupages Prout Nopia flexilinea Warren Syrrhodia madecassaria Boisduval Tephrina crypsispila sp.n. T. exospilata Walker Semiothisa normata Walker STERRHINAE Scopula latimediata sp.n. LARENTIINAE Xanthorhoe a. alluaudi Prout X. alluaudi hancocki Prout X. h. heteromorpha Hampson X. barnsi Prout X, phiara Prout X. latissima Prout X. oculata sp.n. Mimoclystia eucesta sp.n. LARENTIINAE Xanthorhoe alluaudi hancocki Prout X. h. heteromorpha Hampson X. heteromorpha albicera subsp.n. S. johnstoni Butler S. conturbata Warren S. phaeostigma sp.n. Omphalucha katangae Prout Buzura edwardsi Prout Colocleora sciabola Prout C. burgeoni Prout C. hegemonica Prout C. cinnamomoneura Prout Aphilopota oritropha sp.n. Menophra o. oviceps Prout M. oviceps celaena subsp.n. M. dnophera plagifera Prout Xylopteryx phaeochyta sp.n. Ectropis ocellata Warren E. holmi sp.n. E. elaphrodes sp.n. Neocleora melanochorda sp.n. Lomographa leroyi sp.n. Encoma irisaria Swinhoe Zamarada differens pandatilinea Prout Z. dentata sp.n. Amnemopsyche chrysoptera Hampson Ochroplutodes bifurcata sp.n. Ericaceous Belt Haplolabida sjostedti altipeta Prout H. monticolata diplodonta subsp.n. Piercia kennedyi sp.n. Eupithecia dohertyi fulvata Fletcher . immodica Prout . tricuspis Prout . albistrigata sp.n. . nigropolata Fletcher . edwardsi Fletcher ; proflua subvincta Prout . evansi sp.n. rim Alpine Belt X. wellsi capnoessa subsp.n. X. w. wellsi Prout Geometridae 8t DISTRIBUTION TABLE ) ] | | Rican _Known ; Known | Known Known | Speci Vegetation No. of E. and W from E. of | from W. of | only from | only from P sini belt species - ¢ | Ruwenzori | Ruwenzori | W. Rift | Ruwen- peviun ie ; only only Valley zori oan Ruwenzori Savannah 8 5 | = = = fons 3 Elephant Grass 57 24 | 18 9 = os 6 Montane Rain | Forest 118 21 29 II 13 9 35 Ericaceous 19 I 3 — 2 7 6 Alpine 3 — — — — 3 — References Butter, A. G., 1895, On Lepidoptera recently collected in British East Africa by G. F. Scott-Elliot. Proc. zool. Soc. Lond., 1895:738-742. Hampson, G., 1909, Zoological Results of the 1905-6 Ruwenzori Expedition, Lep. Heterocera. Trans. zool. Soc. Lond., 19 (2): 103-140. Prout, L. B., 1913, Contributions to our knowledge of the subfamilies Oenochrominae and Hemitheinae of Geometridae. Novit. zool., 20: 420. Prout, L. B., 1921, New Lepidoptera collected by T. A. Barns in East Central Africa: IV. New Geometridae. Bull. Hill Mus., 1 (1):138-157. Prout, L. B., 1928, A new Geometrid from Ruwenzori. Entomologist, 61:274. Prout, L. B., 1929-39, African Geometridae. In Seitz, Gross-schmett. Erde, 16. Prout, L. B., 1932, New Exotic Geometridae. Novit. zool., 38:103. Prout, L. B., 1932, Voyage de Ch. Alluaud et R. Jeannel en Afrique orientale (1911-1912), Insectes Lép., Geometridae. Mém. Soc. zool. Fr., 29:375-512. Fisntocx, C. W. L., and Hancock, G. L. R., 1932, Notes on the Flora and Fauna of Ruwenzori with special reference to the Bujuku Valley. Journ. E. Afr. & Uganda nat. Hist. Soc., 44:205-229. Frercuer, D. S., 1951, Eupithecia Studies 1. Ann. Mag. nat. Hist., (12) 4: 1009-1026. OENOCHROMINAE Panagropsis muricolor (Warren) Noreia muricolor Warren, 1897, Novit. zool., 4:30. KENYA: Katamayo, 8000 ft. (Edwards), 1 9. Distribution: $. E. Sudan; Natal; Transvaal. Derambila punctisignata Walker Derambila punctisignata Walker, 1863, List Lep. Ins. B.M., 26:1630. UGANDA: Mt. Sabinio, 7000-11,000 ft. (Edwards), 2 3. Distribution: Mt. Cameroon; W. Uganda; W. Kenya. 82 Ruwenzori Expedition, 1952. Volume I, Number 6 GEOMETRINAE Hypocoela turpisaria (Swinhoe) ? Thalera turpisaria Swinhoe, 1904, Trans. ent. Soc. Lond., 1904: 546. RUWENZORI: Namwamba Valley, 6500 ft. (Edwards), 1 3, 1 9. Distribution: Principe I.; French Guinea; Ivory Coast; Nigeria; Cameroons. Thalassodes digressa (Walker) Geometra digressa Walker, 1861, List Lep. Ins. B.M., 22: 513. Thalassodes ricinaria Guenée, 1862, in Maillard, La Réunion, annexe G, p- 32. Nemoria chlorinaria Mabille, 1897, Ann. Soc. ent. Fr., 66:230. Thalassodes subreticulata Mabille, 1900, Ann. Soc. ent. Fr., 68:740. Hemithea sapoliaria Swinhoe, 1904, Trans. ent. Soc. Lond., 1904: 547. UGANDA: Fort Portal, sooo ft. (Edwards), 1 3. Distribution: Africa from S. of Sahara to Natal; Comoro Is.; Madagascar; Réunion I.; Mauritius. Thalassodes albifimbria Warren Thalassodes albifimbria Warren, 1897, Novit. zool., 4:214. Thalera ostracites Karsch, 1900, Ent. Nachr., 26:370. Syn. nov. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 Q. Distribution: Senegal; Belgian Congo; Tanganyika; Uganda; Kenya; Madagascar. Examination of the genitalia of the type of ostracites Karsch, kindly loaned by Dr. Hering of the Zoological Museum, Berlin, has shown it to be conspecific with albifimbria Warren. Prasinocyma scissaria degenerata Prout Prasinocyma degenerata Prout, 1913, Novit. zool., 20: 420. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 9. Distribution: E. Africa from Abyssinia to Tanganyika. Examination of the genitalia of the types of P. scissaria Felder (1875), P. unipuncta Warren (1897) and P. degenerata Prout has shown them to be identical. Specimens from Abyssinia to Tanganyika have a white spot edged distally with fuscous at the middle of the inner margin of the fore wing; for this subspecies the name degenerata Prout is available. The nominate subspecies, which occurs from S. Rhodesia to the Cape, has the fore wing uniformly green. Among the nominate sub- species occasional specimens occur, which are marked similarly to s. degenerata; for these aberra- tions the name unipuncta Warren is available. Prasinocyma simiaria (Guenée) Thalassodes simiaria Guenée, 1858, Hist. nat. Ins., Spec. gén. Lép., 9:359. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3. | | Distribution: Ivory Coast; Cameroons; Angola; Belgian Congo; Uganda; Kenya; Abyssinia; Madagascar. | Geometridae 83 Prasinocyma angolica Prout Prasinocyma simiari a angolica Prout, 1930, in Seitz, Gross-schmett. Erde, 16:22. Prasinocyma angolica Prout, Fletcher, 1955, Expl. Parc Nat. Upemba, Miss. G. F. de Witte 1946-9, Fasc. 32:80. A RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3. Distribution: Angola; Belgian Congo; Uganda; Kenya; Tanganyika; Nyasaland. Prasinocyma caecata sp.n. (Figures 91-93) 3S 40 mm.: Palpus white beneath, vinaceous above, equal in length to three-quarters of diameter of eye; third segment minute. Antennal shaft, head and collar white. Frons, thorax, abdomen and upperside of wings pale olivine, the latter striate with white. Cell spots minute on both wings, fuscous. Underside of wings whitish. Hind tibia dilate with hair pencil. Genitalia: Uncus simple, little longer than the apex of the gnathus, which is produced narrowly. Basal two-thirds of ventral margin of valve lightly sclerotized; a sclerotized band extends diagon- ally across valve from dorsal to ventral margin, as figured. Aedeagus narrowly rounded at base and apex. Vesica with five cornuti as figured. Eighth sternum with two triangular projections from posterior edge. Related to P. pupillata Warren (1902) but lacking the conspicuously large cell marks of that species. In the male genitalia of pupillata the sclerotized band on the valve is densely but minutely scobinate and the vesica bears only three cornuti. RUWENZORI: Mahoma River, 6700 ft., 13-16.viii.1952 (Fletcher), 1 3, holotype. Prasinocyma simpliciata sp.n. (Figures 100, 101) 3 34 mm.: Palpus vinaceous, equal in length to diameter of eye. Frons pale pinkish buff. Head, collar and abdomen dark greenish glaucous mixed with white. Thorax and upper surface of wings dark greenish glaucous, the latter striate with white. Fore wing with costa narrowly pinkish buff and a black spot at middle of inner margin. Cell spots on both wings black. Fringes con- colorous with wings. Underside. Fore wing marked similarly to upperside, costa and proximal _ half of subcostal vein pinkish buff mixed with fuscous. Hind wing paler. Cell spots wanting. | The fringes are marked with a fuscous spot at the end of each vein. Hind tibia dilate and bearing _a hair pencil. Genitalia: Uncus simple and of even width, bluntly tipped. Gnathus produced, subequal to _uncus. Basal three-fourths of ventral margin of valve lightly sclerotized, broadly basad, narrowly _apicad, with a triangular process arising from inner edge near base; a lightly sclerotized band extends diagonally from mid-base to tip of ventral margin. Basal third of aedeagus one-fourth _as wide as remainder; vesica with two small, tapered cornuti. Eighth sternum simple. Related to P. pupillata Warren (1902) and to the preceding species; as with other species in the | genus, most reliably determined by the structure of the genitalia. The straight, posterior edge _ of the eighth sternum of P. simpliciata, which may be studied without dissection, at once dis- _tinguishes it from its closest relatives. | UGANDA: Kigezi District, Mt. Mgahinga, 8000 ft., 22-27.x1.1934 (Edwards), t 3, holotype. 84 Ruwenzori Expedition, 1952. Volume I, Number 6 Prasinocyma pupillata (Warren) Thalassodes pupillata Warren, 1902, Novit. zool., 9: 496. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 3. Distribution: S. Sudan; Kenya. Prasinocyma corrugata sp.n. (Figures 94-96) 3 36 mm.: Palpus white beneath, rivage green above, equal in length to diameter of eye. Lower part of frons white, upper part rivage green. Head and thorax deep glaucous green mixed with white. Wings deep glaucous green, smooth scaled and lightly striate with white. Costa of fore wing narrowly white. Fringes white, edged proximally with deep glaucous green and distally with fuscous. Cell spots fuscous ringed with white. A white spot at middle of inner margin of fore wing is edged distally with fuscous. Underside whitish and glossy. Hind wing angled at vein M3. Hind tibia dilate and bearing a hair pencil. Genitalia: Uncus stout and tapered, subequal to apex of gnathus, which is produced and scoop- shaped. Basal three-fourths of ventral margin of valve lightly sclerotized, narrowly towards apex, broadly with corrugations towards base. A slender, lightly sclerotized band extends diagonally across valve from middle to just beyond ventral margin; the projecting part is strongly scobinate. Basal half of aedeagus narrowed to one-fifth of apical half; vesica with three tapered cornuti. Eighth sternum shaped as illustrated. Related to the preceding species, from which it is best distinguished by the genitalia. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft., x.1934 (Edwards), 1 3, holotype. Prasinocyma trifilifimbria uniformata subsp.n. (Figures 102-104) Differs slightly from ¢. trifilifimbria Prout (r915) in the structure of the male genitalia and super- ficially in the colour of the fringes. In the nominate subspecies the fringes are white edged proximally with glaucous green and distally with fuscous; in subspecies wniformata the fringes are concolorous with the wings, glaucous green. Genitalia: Apex of valve broadly rounded with a narrow, tapered, sclerotized area extending parallel with the ventral margin; harpe on ventral margin of valve incurved at apex with rounded tip. In the nominate subspecies the apex of the valve is narrowly rounded and the harpe is similarly incurved but tapered to a sharp point. The differences in the aedeagi and eighth sterna are shown in the figures (Figures 105, 106). KENYA: Aberdare Range, Mt. Kinangop, 8000 ft., x.1934 (Edwards), 1 3, holotype. Prasinocyma crenulata sp.n. (Figures 97-99) 3 40 mm.: Palpus white beneath, vinaceous above, slightly longer than diameter of eye. Frons white with some green scaling near head. Head, thorax and abdomen white mixed with deep glaucous green. Wings deep glaucous green very sparsely striate with white. Fore wing witha | conspicuous white spot at middle of inner margin. Cell spots minute, consisting of two or three t fuscous scales. Fringes concolorous with wings. Underside whitish. Hind tibia dilate and bearing a hair pencil. Geometridae 85 Genitalia: Uncus simple, apex rounded. Apex of gnathus semicircular. Juxta almost rectangular, apex truncate. Harpe on ventral margin of valve incurved at apex as in frifilifimbria Prout (1915). Basal third of aedeagus narrowed to one-fourth; apical half sclerotized at one side; vesica with three cornuti as figured. Posterior edge of eighth sternum sclerotized and crenulate. Similar in colour to the preceding species and closely related to it; differs superficially in the presence of a large white spot at middle of inner margin of fore wing, the spot not being edged distally with fuscous, and the much reduced fuscous cell spots; differs structurally in the male genitalia (Figures 97-99). RUWENZORI: Mahoma River, 6700 ft., 13-16.viii.1952 (Fletcher), t 3, holotype. Prasinocyma triangulata sp.n. (Figures 107, 108) A 5 40 mm.: Superficially closely similar to the preceding species, differing only in the larger fuscous black cell spots and in the spot at middle of inner margin of fore wing, which is white edged distally with fuscous black. Genitalia: Uncus similar to that of crenulata. Apex of gnathus rectangular. Apex of juxta strongly bilobed. Valve and shape of aedeagus similar to those of crenulata. Vesica with a sinuous, sclerotized band, a broad-based cornutus tapered sharply at one side apicad and four small, sclerotized plates. Posterior margin of eighth sternum with two triangular projections. | RUWENzORI: Mahoma River, 6700 ft. (Fletcher), 1 J; Ruimi Valley, Misigo, 8550 ft. (Fletcher), | 1g; Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 1 3, holotype. yin typ | Prasinocyma inornata sp.n. (Figures 109-112) 32 36 mm.: Palpus white beneath, vinaceous above; in the male a little longer than, in the female twice as long as diameter of eye. Frons, head, thorax and abdomen glaucous green mixed with _ white. Upper surface of wings glaucous green striate with white. Cell spots minute, indicated only by a little denser green scaling. Underside whitish. Costal vein on fore wing pinkish buff _ above and beneath. Hind tibia of male dilate with a hair pencil. Male genitalia: Uncus simple, twice as long as the slenderly produced apex of the gnathus. A slender, sinuous, sclerotized ridge extends along centre of valve from base to two-thirds; harpe on ventral margin of valve slender, incurved and lightly serrate. Aedeagus broad at middle, tapered apicad; basal third reduced to one-fifth of greatest width. Vesica with two tapered cornuti, one one-half and one one-third as long as the aedeagus. Eighth sternum shaped as illustrated. __ Female genitalia: Genital plate sclerotized and shaped as illustrated. Ductus bursae short and partially membranous. Bursa copulatrix membranous and ovate with a single two-spined signum. Similar, in the almost complete lack of pattern, to P. ampla Warren (1904) but readily dis- tinguishable from that and other species in the genus by the genitalia (Figures 109-112). RUWENZORI: Nyinabitaba, 8650 ft., 7-13-vii.1952 (Fletcher), 1 3, holotype, 1 Q, allotype. UGANDA: Kigezi District, Mafuga Forest (Jackson), 1 3. Prasinocyma inconspicuata sp.n. (Figures 117-1 19) SP 32-36 mm.: Closely related to the preceding species, differing superficially in the colour of the wings, which is pale olivine; the white striation is slight and much less conspicuous. | | | 86 Ruwenzori Expedition, 1952. Volume I, Number 6 Genitalia: Uncus simple, three times as long as apex of gnathus, which is one-and-one-half times as long as broad. Valve with a sclerotized fold at mid-base and a harpe shaped similarly to that of inornata but stouter and with a strongly scobinate apex. Basal two-fifths of aedeagus narrowed to half the width of the remainder. Vesica scobinate apicad; a sclerotized ridge extends along three-fifths of one side. The eighth sternum is shaped as illustrated. RUWENZORI: Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 2 3, including holotype. Prasinocyma geminata Prout Prasinocyma geminata Prout, 1913, Novit. zool., 20: 421. Prasinocyma batesi Prout, 1930, in Seitz, Gross-schmett. Erde, 16:24. Syn. nov. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 9. Distribution: Kenya; Uganda; Belgian Congo; Cameroons; Angola. Prasinocyma jefferyi Prout Prasinocyma jefferyi Prout, 1930, in Seitz, Gross-schmett. Erde, 16:24. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 2 3. Distribution: Kenya; Uganda; Belgian Congo; Nyasaland. Prasinocyma stictimargo (Warren) Thalassodes stictimargo Warren, 1902, Novit. zool., 9: 497. RUWENZORI: Nyinabitaba, 8650 ft. (Fletcher), 1 9. Distribution: Kenya. Prasinocyma edwardsi sp.n. (Figures 113-116) $2 40 mm.: Palpus white beneath, vinaceous above, equal in length to diameter of eye in both sexes. Frons vinaceous. Head, thorax and abdomen deep lichen green mixed with white. Wings deep lichen green irrorate with white. Cell spots minute, of a darker shade of green. Fringes concolorous with wings. Hind tibia of male not dilate and without hair pencil. Male genitalia: Uncus stout, apex broadly rounded. Apex of gnathus produced and tapered. Valve with a slender weakly sclerotized area parallel with ventral margin; a weakly sclerotized harpe with tapered apex, extends to three-fourths ventral margin. A tapered, sclerotized process arises from one-half ventral margin, extends towards base of valve, curves sharply towards dorsal. margin and then extends diagonally across valve towards apex of harpe. Basal third of aedeagus narrowed to one-third of width of remainder; apical half sclerotized at sides, one of which is scobinate. Vesica without cornuti. Eighth sternum shaped as illustrated. Female genitalia: Genital plate shaped as illustrated, with two sclerotized ridges extending posteriorly from anterior edge. Bursa copulatrix pyriform and membranous with a single signum. The species is closely related to P. tricolorifrons Prout (1913), now transferred fron. Hemistola on the basis of the structure of the genitalia, but differs from it superficially in the more acute apex to the fore wing and structurally in the tapered harpe and more slender uncus; in tricolorifrons the apex of the harpe is broadly rounded and that of the uncus broadly spatulate. KENYA: Mt. Elgon, 11,000 ft., ii.1935 (Edwards), t 3, holotype, 1 9, allotype. 1 Geometridae 87 Chlorissa apographa Prout _ Chlorissa apographa Prout, 1930, in Seitz, Gross-schmett. Erde, 16:28. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 2 3. Distribution: Kenya. Probably at most a subspecies of C. attenuata Walker (1862), which occurs from Tanganyika to the Cape and has identical genitalia. _ C. cremnobates Prout (1930) from Kenya and C. dorsicristata Warren (1905) from Natal show a _ similar relationship. Chlorissa eborilitoris Prout — Chlorissa attenuata Walker f. eborilitoris Prout, 1930, in Seitz, Gross-schmett. Erde, 16:28. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 $; Bwamba Pass (west side), 5500-7500 ft. | (Edwards), 1 3. UGANDA: Bundibugyo, 3440 ft. (Fletcher), 1 3. A KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 3 3. Distribution: Ivory Coast; Kenya. Comparison of the male genitalia of C. attenuata Walker (1862) and C. eborilitoris has shown the _ two to be distinct species. In attenuata the tapered process arising from the mid-dorsal margin of the valve is one-third as long as the socii; in eborilitoris it is two-thirds as long. In attenuata an anteriorly curved, scobinate process arises from the mid-ventral margin of the valve and is more than twice as long as the socii; in eborilitoris this process is straight and shorter than the socii. | Neromia quieta (Prout) _ Prosomphax (?) quieta Prout, 1912, Gen. Ins., 129: 197. RUWENZORI: Bugoye, 4500 ft. (Fletcher), 1 3; Ibanda, 4700 ft. (Fletcher), 1 9. Distribution: Kenya; Belgian Congo. Lathochlora perversa Prout _Lathochlora perversa Prout, 1915, Novit. zool., 22:319. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 9. Distribution: Ivory Coast; Cameroons; Uganda. Prosomphax anomala (Warren) | Omphacodes (?) anomala Warren, 1902, Novit. zool., 9: 495. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 7 3. Distribution: Kenya. Omphacodes pulchritacta Prout | Omphacodes pulchritacta Prout, 1923, Novit. zool., 30: 19r. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3. Distribution: Sudan; Abyssinia; Kenya. 88 Ruwenzori Expedition, 1952. Volume I, Number 6 Cosmostolopsis simplex rubropunctata subsp.n. In structure apparently identical with s. simplex Warren (1902) but differing superficially in having a red frons and three red spots on the otherwise white transverse fasciae of each wing. On the fore wing there is one spot on the antemedial fascia at the inner margin and two on the post- medial fascia, one at vein M3 and one at the inner margin, with sometimes a third on vein Mr. On the hind wing there are three spots on the postmedial fascia, one each on veins M1 and M3 and one at the anal margin; the cell spot is ringed, sometimes broadly, with red. Immediately proximad of the fringes on both wings is a slender, red fascia. RUWENZORI: Ruimi Valley, Misigo, 8550 ft. (Fletcher), 3 3; Nyinabitaba, 8650 ft., 7-13.vii. 1952 (Fletcher), 1 3, holotype, 1 9, allotype. UGANDA: Mt. Mgahinga, 8000 ft. (Edwards), 1 3. STERRHINAE Ptomophyle subcarnea (Warren) Traminda subcarnea Warren, 1902, Novit. zool., 9: 505. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 3. Distribution: French Guinea; Gold Coast; Cameroons; Belgian Congo. Problepsis similinotata Prout Problepsis similinotata Prout, 1917, Novit. zool., 24: 431. UGANDA: Bundibugyo, 3440 ft. (Fletcher), 1 3. Distribution: Gambia; Sierra Leone; French Guinea; Ivory Coast; Belgian Congo. Scopula albida (Warren) Induna albida Warren, 1899, Novit. zool., 6:294. Induna pura Swinhoe, 1909, Ann. Mag. nat. Hist., (8) 3:94. UGANDA: Semliki Forest, 2850 ft (Fletcher), 1 3; Bundibugyo, 3440 ft. (Fletcher), 1 9. Distribution: West Africa, Gambia to Angola; Belgian Congo; Uganda. Scopula cinnamomata Fletcher Scopula cinnamomata Fletcher, 1955, Expl. Parc Nat. Upemba, Miss. G. F. de Witte 1946-9, Fasc. 32782, Figures; 5, 6, 10, 12, 13. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3. Distribution: Belgian Congo. Scopula sevandaria (Swinhoe) Lycauges sevandaria Swinhoe, 1904, Trans. ent. Soc. Lond., 1904: 553. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3. Distribution: Kenya. Geometridae 89 Scopula candidaria (Warren) Pylarge candidaria Warren, 1902, Novit. zool., 9: 504. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 2 3; Ruimi Valley, Misigo, 8550 ft. (Fletcher), 1 9. Distribution: Kenya. Scopula calcarata sp.n. (Figures 1, 120, 121) - g 28-31 mm.: Antennae ciliate. Hind tibia with one pair of spurs, not dilate and without a hair _ pencil. Inner surface of palpus and lower fourth of frons light buff; outer surface of palpus and _ upper part of frons fuscous black. Thorax and abdomen light buff, abdomen with a few scattered, fuscous scales. Wings light buff suffused distally, and on the fore wing costally, with tilleul buff and very lightly irrorate with fuscous. Antemedial and medial fasciae weakly marked; post- - medial fascia dentate, strongly marked between vein Cu2 and inner margin on fore wing, other- wise represented by spots on the veins; all fuscous. Terminal interneural spots fuscous. Fringes concolorous with wings and spotted with fuscous at vein ends. Cell spots fuscous, clearly marked. - Underside light buff and glossy, fore wing suffused with fuscous, more strongly towards costa. Cell spots, medial and postmedial fasciae weakly marked in fuscous. Termen narrowly and strongly fuscous. Genitalia: Socii twice as long as the membranous dorsal lobe of valve; ventral arms of valves sclerotized, tapered and symmetrical. Aedeagus shaped as figured; vesica with one flat, almost rectangular cornutus. Mappa and cerata shaped as figured. Closely related to the preceding species, differing from it superficially in the ground colour of | the wings and the shape of the postmedial fascia on the fore wing. Differs structurally in the cerata; in candidaria the right arm is two-thirds as long as the left and incurved apically; in calcarata the right arm is one-fourth as long as the left and straight. RUWENZORI: Mahoma River, 6700 ft., 13-16.viii.1952 (Fletcher), 3 3, including holotype. Scopula macronephes sp.n. (Figures 5, 61) 2 33 mm.: Palpus white, the outer surface mixed with fuscous. Frons, head, thorax and abdomen white very lightly irrorate with fuscous. Wings, proximad of postmedial fasciae, white, costal area lightly irrorate with fuscous. Medial fascia of fore wing marked only by a fuscous spot at two-thirds costa. Cell spots on both wings fuscous. Distad of postmedial fasciae the wings are suffused with fuscous and fuscous black. Underside similar to upperside, but the fuscous markings _are very much weaker. Genitalia: Ostium bursae shaped as shown in figure. Genital plate semicircular and of even width. Ductus bursae membranous, rather more than one-third as long as the ovate bursa copula- | trix, which is membranous and patterned with small, broad-based spines as figured. Distinguished from other species in the Pylarge sections of Scopula by the very distinctive pattern of the wings and by the structure of the genitalia (Figure 61). RUWENZORI: Namwamba Valley, 6500 ft. (Edwards), 1 9, holotype. 90 Ruwenzori Expedition, 1952. Volume I, Number 6 Scopula latimediata sp.n. (Figures 2, 7, 122, 123) 3 32-34 mm.: Hind tibia slender, without hair pencil and with only one pair of spurs. Antennae ciliate, the cilia three times as long as diameter of shaft. Inner surface of palpus and lower part of frons pinkish buff; outer surface of palpus and upper part of frons fuscous black. Head, thorax and abdomen pinkish buff lightly irrorate with fuscous black; dorsum with fuscous black spots, especially large on segments 4-7. Wings pinkish buff lightly irrorate and patterned with fuscous black. Antemedial fascia on fore wing almost semicircular, extending from radius to submedian fold, being marked with dashes on radius and cubitus. Medial fasciae on both wings broad and ill-defined; postmedial fasciae dentate, marked strongly on veins, especially on fore wing. Terminal interneural spots fuscous black. Fringes pinkish buff with fuscous spots at vein ends. Cell spots, large on fore wing, fuscous black. Underside light buff, proximal half of fore wing strongly suffused with fuscous black. Postmedial fascia on fore wing strongly marked from costa to submedian fold. Postmedial fascia on hind wing entire but weakly marked. Cell spots as on upperside. In three examples both wings are densely irrorate with fuscous black; apart from the cell spots, the markings are scarcely traceable. Genitalia: Valves slightly asymmetrical, the sclerotized, tapered, ventral part of the valve being larger on the left side than on the right. Aedeagus slender and tapered apicad; vesica with one cornutus, a short, inverted spine. Mappa and cerata as figured. Differs from the closely related S. macronephes, of which it might prove to be the male, in pattern but similar in size and wing-shape and, on that account, conspicuous in the Pylarge section of Scopula. Scopula latimediata is the only representative of the Sterrhinae known from above the bamboo zone of Ruwenzori. RUWENZORI: Namwamba Valley, 10,200 ft. (Edwards), 3 3, including holotype; Nyamaleju, 10,530 ft (Fletcher), 2 3. BELGIAN CONGO: Virunga Mts., 10,000 ft. (T. A. Barns), 1 3. Scopula plionocentra Prout Scopula (Pylarge) plionocentra Prout, 1920, Novit. zool., 27: 280. RUWENZORI: Kilembe, 4500 ft. (Edwards), 3 3. Distribution: Nigeria; Gaboon; Cameroons; Belgian Congo; Uganda. Scopula magnipunctata sp.n. (Figures 9, 124, 125) 3 23 mm.: Antennae ciliate. Hind tibia with one pair of spurs and without hair pencil. Hind wing angled at vein M3. Palpus pale pinkish buff, outer surface and frons fuscous black. Head pale pinkish buff; collar fuscous black. Thorax and abdomen pale pinkish buff, the latter with some fuscous black scaling. Wings pale pinkish buff, costal area of fore wing and distal margins of both wings suffused with pinkish buff; area proximad of medial fascia on hind wing is lightly irrorate with fuscous black. Medial fascia on fore wing is situate just distad of cell spot, extending from two-thirds costa to one-half inner margin; that on hind wing is just proximad of cell spot, extending from one-third costa to one-third anal margin; both pinkish cinnamon. Postmedial Geomctridae OI fascia represented by fuscous black spots on veins; interneural terminal spots fuscous black. Fringes pinkish buff with fuscous black spots at vein ends. Cell spots large, fuscous black. Under- side considerably paler and glossy; proximal thirds of both wings irrorate with fuscous, more strongly on fore wing; postmedial fascia on fore wing unbroken from vein Scs to Cu2; that on hind wing and cell spots similar to upperside. Genitalia: Socii one-half as long as the membranous dorsal lobe of valve; ventral parts of valve symmetrical and tapered. Aedeagus tapered apicad; vesica with one weakly sclerotized cornutus, shaped as figured. Mappa and cerata as figured. Closely related to S. plionocentra Prout, from which it differs superficially in its larger size and very large cell spots and structurally in the shorter, stout cerata (ratio 17:42) RUWENZORI: Mahoma River, 6700 ft., 13-16.viii.1952 (Fletcher), + 3, holotype. Scopula nigrinotata (Warren) Craspedia nigrinotata Warren, 1897, Novit. zool., 4:52. RUWENZORI: Kilembe, 4500 ft. (Edwards), 3 3, 1 9. Distribution: Sierra Leone; Gold Coast; Nigeria; Sudan; Abyssinia to Cape. Scopula cassiaria (Swinhoe) Emmiltis cassiaria Swinhoe, 1904, Trans. ent. Soc. Lond., 1904: 558. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 2 3; Ruimi Valley, Misigo, 8550 ft. (Fletcher), 2 3. Distribution: Kenya; Uganda. Scopula johnsoni sp.n. (Figures 4, 126, 127) 3 36 mm.: Antennae shortly pectinate, the pectinations bearing cilia twice as long as diameter of shaft. Hind tibia slender, without hair pencil or spurs. Inner surface of palpus and head pinkish buff. Outer surface of palpus and frons fuscous black. Thorax and abdomen pinkish buff lightly irrorate with fuscous black; dorsum with fuscous black spots, especially large on segments 5-7. Wings light pinkish cinnamon suffused with light vinaceous cinnamon, especially distad of post- medial fasciae, and irrorate with fuscous black. Antemedial fascia on fore wing and medial fasciae on both wings poorly defined; postmedial fasciae sharply defined, accentuated slightly on both wings between veins Mi and M3 and between Cu2 and At and additionally on fore wing by two spots between veins Scq and M1; cell spots large, those on hind wing being pale-ringed; all the above markings and terminal interneural spots fuscous black. Subterminal shade broad and dentate, light vinaceous cinnamon. Fringes concolorous with wings; fuscous spots at the vein ends. Underside light buff irrorate with fuscous. Medial fasciae weakly, postmedial sharply _ marked and of even width, fuscous black. Cell spots large, fuscous black. Genitalia: Tegumen with broad ventral folds; socii minute. Valves symmetrical, the two arms | of each bifid valve of equal length and tapered apicad. Aedeagus tapered apicad; vesica with a | single cornutus. Mappa and cerata as figured. Closely related to the smaller (wing-span 28 mm.) S. subpectinata Prout (1915); the males are readily distinguishable by the structure of the hind tibia, which in subpectinata is dilate with a hair pencil. 92 Ruwenzori Expedition, 1952. Volume I, Number 6 It is with pleasure that I name this species in honour of Mr. Ray Johnson of the Uganda Survey Department, with whose guidance his old camp site at Misigo in the Ruimi Valley was reached and used as a collecting station. . RUWENZORI: Ruimi Valley, Misigo, 2-3.vili.1952 (Fletcher), 2 3, including holotype; Nyinabitaba, 8650 ft. (Fletcher), 1 3. Scopula fragilis (Warren) Lycauges fragilis Warren, 1903, Novit. zool., 10:272. j RUWENZORI: Kilembe, 4500 ft. (Edwards), 2 3. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 14 3. Distribution: Kenya. Scopula silonaria (Guenée) Phyletis silonaria Guenée, 1858, Hist. nat. Ins., Spec. gén. Lép., 10: 169. Phyletis sticticata Warren, 1901, Novit. zool., 8:10. | RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 9. Distribution: Kenya; Uganda; Belgian Congo; Tanganyika. Scopula dissonans (Warren) Craspedia dissonans Warren, 1897, Novit. zool., 4:51. UGANDA: Bundibugyo, 3440 ft. (Fletcher), 1 3. Distribution: Abyssinia; Kenya; Uganda; Tanganyika; Belgian Congo; Nigeria; Natal; Transvaal. Scopula alma Prout Scopula alma Prout, 1920, Novit. zool., 27:307. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 2 3. Distribution: Kenya; Natal to Cape. Scopula aphercta Prout Scopula aphercta Prout, 1932, Novit. zool., 37:241. UGANDA: Semliki Forest, 2850 ft. (Fletcher), t 3. Distribution: Nigeria; Belgian Congo. Scopula pruinata sp.n. (Figures 87, 130-132) 3 14 mm.: Antennal ciliation twice as long as diameter of shaft. Hind tarsus three-fifths as long as hind tibia, which is dilate with a hair pencil. Frons fuscous. Thorax and abdomen white. Wings white and glossy, lightly irrorate with cinnamon and fuscous distad of postmedial fascia, which is represented on fore wing by a few fuscous scales on veins; on hind wing the three Scopula suda Prout, 1932, Novit. zool., 37:241. Geometridae 93 transverse fasciae are similarly marked. Termen fuscous between veins on both wings. Fringes white with a few cinnamon scales. Underside white with fuscous terminal interneural spots; fore wing slightly darker costad with postmedial fascia represented by fuscous spots on veins. Genitalia: Socii slightly longer than valves, which are bifid and symmetrical. Ventral lobe of valve of even width with rounded apex; dorsal lobe tapered apicad. Aedeagus equal in length to whole genitalia, measured from saccus to apices of socii. Vesica without cornuti. Cerata of equal length, as figured. A distinctive species, reminiscent of S. ossicolor Warren (1897) in size and pattern but dis- | tinguishable from it by its glossy white colour. UGANDA: Semliki Forest, 2850 ft., 22.viii-3.ix.1952 (Fletcher) 1 3, holotype. Scopula suda Prout RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 3. Distribution: Kivu. Scopula laevipennis (Warren) Craspedia laevipennis Warren, 1897, Novit. zool. 4:52. - Craspedia uninotata Warren, 1897, Novit. zool., 4:219. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 3. Distribution: West Africa, Sierra Leone to Gaboon; Belgian Congo; Uganda; Kenya. Scopula pyraliata (Warren) Craspedia pyraliata Warren, 1898, Novit. zool., 5:240. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 2; Bundibugyo, 3440 ft. (Fletcher), « 3. Distribution: West Africa, Liberia to Gaboon; Belgian Congo; Uganda. Scopula stephanitis Prout Scopula stephanitis Prout, 1932, Novit. zool., 37:242. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 9; Namwamba Valley, 6000 ft (Edwards), 1 9; Mahoma River, 6700 ft. (Fletcher), 1 3. UGANDA: Fort Portal, sooo ft. (Edwards), 1 3. Distribution: Kivu. Scopula atricapilla Prout Scopula atricapilla Prout, 1934, Novit. zool., 39: 107. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 3. Distribution: Kenya; Belgian Congo. 94 Ruwenzori Expedition, 1952. Volume I, Number 6 Scopula caducaria (Swinhoe) Emmiltis caducaria Swinhoe, 1904, Trans. ent. Soc. Lond., 1904:556. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 2; Ibanda, 4700 ft. (Fletcher), 2 3, 1 9. UGANDA: Fort Portal, 5000 ft. (Edwards), 2 9. Distribution: Kenya; Uganda; Nyasaland. The specimens from Fort Portal and Kilembe (wing-span 24-26 mm.) are suffused with dull ochraceous; two other specimens from Uganda in the British Museum are similarly coloured. The specimens from Ibanda (wing-span 20 mm.) are smaller, paler and the usually well con- trasted subterminal fascia and terminal area are but poorly defined; perhaps an arid-country form. S. elisabethae Prout (1934) and S. obliquisignata Bastelberger (1909) differ structurally from caducaria only in the cerata; in elisabethae the cerata are of equal length and slightly incurved apicad; in obliquisignata the left ceratum is two-thirds as long as that on the right; in caducaria the right ceratum is one-half as long as that on the left and incurved almost from its base. Scopula lugubriata sp.n. (Figures 3, 60, 62, 128, 129) 5 26-30 mm.; 2 24-28 mm.: Male antenna ciliate; hind tibia three times as long as tarsus and dilate with hair pencil. Inner surface of palpus and lower part of frons light buff; outer surface of palpus and upper part of frons fuscous black. Wings pinkish buff proximad of postmedial fascia; distad of it, light vinaceous cinnamon divided by a lunulate subterminal fascia of pinkish buff; the whole lightly irrorate with fuscous. The three transverse fasciae are weakly marked in light vinaceous cinnamon, the postmedial being the most distinct. Cell spots minute, fuscous. Fringes pinkish buff irrorate with fuscous. Underside glossy, light buff; anterior half of fore wing suffused with fuscous. Cell spots and medial fasciae on both wings and postmedial fascia on fore wing fuscous, weakly marked. Male genitalia: Socii as long as membranous dorsal arms of valves, which are bifid. Ventral arms of valves tapered apicad and symmetrical. Anellus lobes narrowly rounded apically. Aedeagus tapered apicad, narrowed medially; vesica with two weak cornuti medially and a third, smaller one in basal fourth. Mappa and cerata as figured. Female genitalia: Ostium bursae broad posteriorly, narrowed anteriorly, as long as the mem- branous ductus bursae. Bursa copulatrix pyriform and ornamented as shown in figure. Closely related to S. internata Guenée (1858), from which it is best distinguished by the genitalia (Figures 60, 62, 128, 129); those of internata are figured by Janse, 1934, Moths S. Africa, 2, Figures 57, 58. RUWENZORI: Nyamgasani Valley (Edwards), 1 9; Mubuku River, 5250-6000 ft. (Fletcher), 1 2; Namwamba Valley, 6500 ft. (Edwards), 1 9; Mahoma River, 6700 ft. (Fletcher), 1 3, 1 9; Ruimi Valley, Misigo, 8550 ft. (Fletcher), 1 9; Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), t 3, holotype, 1 Q, allotype. Scopula internata praeruptorum Prout Scopula internata praeruptorum Prout, 1920, Novit. zool., 27:293. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3; Mahoma River, 6700 ft. (Fletcher), 1 3. Geometridae 95 Distribution: Kenya; Tanganyika. Ab. limosata ab.n. (Figure 8). The specimen from the Mahoma River, though agreeing in structure with i. internata Guenée (1858) and i. praeruptorum, is very different in appearance. The wings are pale pinkish buff lightly irrorate with fuscous black; the fore wing has three and the hind wing two sharply defined, fuscous black, transverse fasciae, as shown in the figure. Termen fuscous black. Fringes pinkish buff. Cell spot on fore wing is situate just proximad of medial fascia. Underside glossy, pale pinkish buff; fore wing lightly suffused with fuscous proximally. Medial and postmedial fasciae and termen marked as on upperside. | Scopula incalcarata sp.n. (Figures 6, 135, 136) § 26-29 mm.: Antenna ciliate. Hind tibia three times as long as tarsus, without spurs and dilate with hair pencil. In colour and pattern closely similar to S. calcarata, described in this paper, but _with the postmedial fascia on the fore wing not so strongly marked between vein Cu2 and inner margin. ‘ Genitalia: Socii equal in length to membranous dorsal arms of valves, which are bifid; ventral arms symmetrical, tapered and strongly sclerotized. Gnathus wanting. Basal third of aedeagus broad, apical third strongly sclerotized and keel-shaped. Vesica with a weakly sclerotized, rectangular cornutus near apex. Mappa and cerata as figured. Closely related to S. internata Guenée (1858) but differing in the structure of the genitalia. In _internata there is a weakly developed gnathus consisting of two short, tapered arms, one arising from the base of each socius. | The males of S. calcarata and S. incalcarata may be distinguished readily by the differences in the structure of their hind tibiae. | RUWENZORI: Mahoma River, 6700 ft., 13-16.viii.1952 (Fletcher), 3 3, including holotype. | Scopula lactaria (Walker) Acidalia lactaria Walker, 1861, List Lep. Ins. B.M., 22:744. | Acidalia intervulsata Walker, 1861, List Lep. Ins. B.M., 22:745. | Acidalia tectaria Walker, 1866, List Lep. Ins. B.M., 35: 1619. | UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 3. Distribution: Africa south of Sahara; Madagascar. Scopula minorata (Boisduval) Geometra minorata Boisduval, 1833, Nouv. Ann. Mus. Hist. nat., 2:263. | Acidalia mauritiata Guenée, 1858, Hist. nat. Ins., Spec. gén. Lép., 9:476. | Acidalia consentanea Walker, 1861, List Lep. Ins. B.M., 22:745. Emmiltis (Craspedia) mombasae Warren, 1904, Novit. zool., 11: 467. | RUWENZzORI: Kilembe, 4500 ft. (Edwards), 2 3; Ibanda, 4700 ft. (Fletcher), 3 3, 1 9. UGANDA: Bundibugyo, 3440 ft. (Fletcher), 1 3, 3 9. _ Distribution: Africa south of Sahara; Madagascar; Mauritius; Réunion I. 96 Ruwenzori Expedition, 1952. Volume I, Number 6 Scopula internataria (Walker) Acidalia internataria Walker, 1861, List Lep. Ins. B.M., 22:746. Acidalia tremula Bastelberger, 1909, Dtsch. ent. Z., 1909:319. Syn. nov. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 9. Distribution: Sudan; Kenya; Uganda; Belgian Congo; Ivory Coast; Angola; Tanganyika; Nyasaland. Through the courtesy of Dr. Elli Franz of the Senckenberg Museum in Frankfurt a.M., it has been possible to study the genitalia of S. tremula Bastelberger; they proved to be conspecific with those of internataria Walker. Prout (1935, Lep. Cat., 68:444) had earlier suggested that the Bastelberger name might be associated with S. minorata Boisduval. Scopula serena Prout Scopula serena Prout, 1920, Novit. zool., 27:2096. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3; Ibanda, 4700 ft. (Fletcher), 1 3. Distribution: Africa south of Sahara; Madagascar; Rodrigues I.; Seychelle Is. Scopula seydeli Prout Scopula seydeli Prout, 1934, Rev. Zool. Bot. afr., 26:83. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 3. Distribution: Belgian Congo; Kenya; Nyasaland. Scopula sebata sp.n. (Figures 86, 133, 134) d 21-23 mm.: Hind tibia slender, without spurs or hair pencil, equal in length to hind tarsus. Cilia of antenna three times as long as diameter of shaft. Palpus white, outer surface fuscous. Frons fuscous, paler ventrally. Head and thorax pinkish buff; tegulae white posteriorly. Ab- dominal segments pinkish buff, white posteriorly and very lightly irrorate with fuscous. Wings white, patterned in pinkish buff and very lightly irrorate with fuscous. Fore wing: Antemedial and postmedial fasciae slender, acutely angled on radius, then extending straight to inner margin; on the hind wing these fasciae are evenly curved. Terminal areas of both wings pinkish buff divided by a fascia of white. Cell spots and terminal interneural spots fuscous, minute. Under- side white; proximal half of fore wing suffused with fuscous; terminal areas patterned similarly to upperside but very weakly marked. Genitalia: Valves weakly sclerotized and symmetrical. Aedeagus broadened just below apex, then tapered; vesica with a single weak cornutus, one-third as long as aedeagus. Mappa and cerata as illustrated. Superficially indistinguishable from S. Iubricata Warren (1905) and only determined reliably by the genitalia (Figures 133, 134). The genitalia of Jubricata are figured by Janse, 1934, Moths of S. Africa, 2, Figure 55. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3, holotype; Ibanda, 4700 ft. (Fletcher) 1 2 (without abdomen). UGANDA: Fort Portal, 5000 ft. (Edwards), 1 3, 1 9 (without abdomen). Geometridae 97 Sterrha burtti sp.n. (Figures 10, 11, 63, 137, 139) 3 17 mm.; 2 20 mm.: Antennae ciliate; cilia of male twice as long as diameter of shaft, those of female minute. Male hind tarsus one-third as long as tibia, which is dilate and bears a hair pencil. Fore wing cartridge buff and glossy; costa, inner margin and fringes warm buff, the latter chequered with fuscous. Basal, antemedial and medial fasciae broad at costa, dentate and fuscous black; the medial fascia passes through the large and conspicuous cell spot. Postmedial fascia slender and dentate, edged distally with a broad, sinuous band of pale drab. Terminal area pale drab. Hind wing with a similar ground colour and fringes; anal margin warm buff; antemedial fascia straight from costa to one-third anal margin; postmedial fascia from two-thirds costa to two-thirds anal margin, incurved in cell area and touching the large cell spot; all fuscous black. A very broad, sinuous band of light drab is situate distad of postmedial fascia; there is a slender terminal area of the same colour. Underside of both wings uniformly cartridge buff and glossy, margins warm buff. Male genitalia: Uncus tapered to a narrowly rounded apex. Gnathus a little broader and shorter than uncus. Apical half of valve narrowed to rounded apex. Aedeagus a little longer than valve, slightly curved, simple. Vesica without cornuti. Female genitalia: Ostium bursae almost circular, equal in diameter to the width of the strongly sclerotized ductus bursae. Bursa copulatrix a little longer than the ductus bursae, ovate; dorsal surface densely spined; ventral surface membranous. Superficially similar to S. fumilinea Warren (1903), from which it is most reliably distinguished by the genitalia (Figures 63, 137, 139); those of fumilinea are figured by Janse, 1935, Moths S. Africa, 2, Figure 67. TANGANYIKA: Old Shinyanga, v.1954 (Burtt), 3 3, 1 Q, including holotype and allotype. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3. Sterrha arcuata sp.n. (Figures 89, 138) g 12 mm.: Cilia of antenna equal in length to diameter of shaft. Hind tarsus one-fifth as long as hind tibia, which is dilate with a buff hair pencil. Frons fuscous. Head, thorax and abdomen pinkish buff. Wings pinkish buff irrorate with fuscous. Fore wing with two conspicuous, fuscous, costal spots, one at one-third and one at two-thirds; a fuscous postmedial fascia connects the more distal spot with a similar one at two-thirds inner margin; distad of and parallel to the post- medial fascia are two similar fasciae. Fringes pinkish buff with fuscous spots between the veins. Hind wing with a large, fuscous spot at one-half anal margin; distal third of wing with parallel transverse fuscous fasciae, strongly marked at anal margin but fading costad. Underside similarly marked to upperside except that on the fore wing, the proximal costal spot is wanting and the proximal half of the wing is suffused with fuscous. Genitalia: Tip of uncus spatulate. Apex of gnathus produced and tapered, equal in length to uncus. Valve slender, ten times as long as broad; ventral and dorsal margins parallel, apex rounded. Aedeagus equal in length to valve, four times as long as broad. Vesica with a single bowed, tapered cornutus, slightly less than one-half as long as aedeagus. Closely related to S. associata Warren (1897) but differing in the vesica; in associata there are three straight, tapered cornuti; one equal to one-third and two equal to one-quarter of the length of the aedeagus; in addition there are two minute cornuti at apex. RUWENZORI: Ibanda, 4700 ft., 4-12.ix.1952 (Fletcher), 1 3, holotype. 98 Ruwenzori Expedition, 1952. Volume I, Number 6 Sterrha apoa sp.n. (Figures 66, 90, 140) 32 12 mm.: Cilia of male antenna as in the preceding species. Hind tibia broadly dilate and terminally narrowly rounded, with a dense, white hair pencil; hind tarsus not developed. Wings pinkish buff and glossy. Fore wing with antemedial and medial fasciae faintly marked in fuscous; area between medial and postmedial fasciae conspicuously pale, almost hyaline; terminal area pinkish buff, broadly at apex, narrowing tornad; proximad of terminal area is a band of vinaceous drab, bounded proximally by the sharply marked, fuscous postmedial fascia, which extends from three quarters costa, is boldly excurved between veins M3 and Cu2 and is then sinuous to three- quarters inner margin. Hind wing similarly marked, but with antemedial fascia wanting; medial fascia strongly marked, especially at anal margin and the band of vinaceous drab is broader and extends almost to the termen. Fringes on both wings pinkish buff. Underside with antemedial and medial fasciae wanting on both wings; proximal half of fore wing, except costal vein, suffused with fuscous; in other respects similar to upperside. Male genitalia: Differs from the closely related S. arcuata Fletcher and S. associata Warren (1897) in the vesica, which bears five small cornuti basally and two stout cornuti medially, the latter one-half as long as the aedeagus, one straight and one bowed. Female genitalia: Bursa copulatrix ovate, four times as long as its greatest width. Anterior and posterior eighths membranous, remainder sclerotized, ribbed and spined as shown in figure; a slight projection arises in the posterior fourth at the left side dorsally. Ductus seminalis arises from the membranous anterior eighth. UGANDA: Semliki Forest, 2850 ft., 22-viii-3.ix.1952 (Fletcher), 1 3, holotype; Bundibugyo, 3440 ft., 22.viii-3.ix.1952 (Fletcher), 1 9, allotype. Sterrha pediculata sp.n. (Figures 64, 141) 32 12 mm.: Cilia of male antenna as in the preceding species. Hind tibia eight times as long as hind tarsus and dilate with a white hair pencil. Similar in pattern and coloration to the preceding species but differing in the structure of the genitalia. Male genitalia: Differs from S. arcuata and S. apoa in the vesica, which is in part coarsely scobinate and bears eleven cornuti; one is broad and sinuous and one-half as long as the aedeagus; the remainder are tapered and situate in a cluster at apex, one being equal in length to width of aedeagus. Female genitalia: Bursa copulatrix three times as long as its greatest width, with a small pro- jection at the left side posteriorly; posterior tenth and greater part of anterior half membranous; remainder sclerotized, ribbed and spined as shown in figure. RUWENZORI: Bugoye, 4500 ft. (Fletcher), 1 3, holotype, 8.viii.1952, 1 9, allotype, 5—10.ix.1952. Sterrha laciniata (Warren) Ptychopoda laciniata Warren, 1902, Novit. zool., 9: 502. Ptychopoda nitescens Warren, 1902, Novit. zool., 9: 502. Syn. nov. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 9. Distribution: Kenya; Uganda. Geometridae 99 Sterrha pulveraria (Snellen) Acidalia pulveraria Snellen, 1872, Tijdschr. Ent., 15:75, Plate 6:7. Ptychopoda inobtrusa Warren, 1898, Novit. zool., 5:243. Syn. nov. - RUWENzoORI: Ibanda, 4700 ft. (Fletcher), 4 3. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 3; Bundibugyo, 3440 ft. (Fletcher), 6 3, 4 9. Distribution: Sierra Leone; Ivory Coast; Nigeria; Belgian Congo; Uganda; Kenya. Dr. A. Diakonoff of the Rijksmuseum van Natuurlijke Historie in Leiden has kindly com- | pared the genitalia of specimens of S. inobtrusa Warren with those of the type of S. pulveraria _ Snellen and found them to be conspecific. Sterrha prucholoma Prout Sterrha prucholoma Prout, 1932, Novit. zool., 37:248. | RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3. Distribution: Uganda; Belgian Congo; Gold Coast. Sterrha tornivestis Prout | Sterrha tornivestis Prout, 1932, Novit. zool., 37:249. - RUWENZzORI: Kilembe, 4500 ft. (Edwards), 1 Q. Distribution: Nyasaland; Kenya; Gold Coast. Sterrha amputata (Warren) ~ Cacorista amputata Warren, 1899, Novit. zool., 6:292. UGANDA: Bundibugyo, 3440 ft. (Fletcher), 1 3, 2 9. Distribution: West Africa, Senegal to Nigeria; Uganda; Kenya; Tanganyika. | Rhodometra sacraria (Linn.) Phalaena sacraria Linn., 1767, Syst. Nat. (Ed. 12), 1 (2):863. | Rhodometra sacraria Linn., Prout, 1935, Lep. Cat., 68: 433 (full synonymy). RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3, 1 9. Distribution: Canary Is.; Madeira; St. Helena; Africa; Europe; W. Asia. Rhodometra lucidaria (Swinhoe) | Pseudosterrha lucidaria Swinhoe, 1904, Trans. ent., Soc. Lond., 1904: 566. | Sterrha plectaria Guenée var. roseofimbriata Thierry-Mieg, 1911, Ann. Soc. ent. Belg., 54:465. UGANDA: Kigezi District, Mabungo Camp, 6000 ft. (Ford), 1 3. Distribution: Arabia; Eritrea; Abyssinia to Nyasaland; Uganda; Belgian Congo. | i 100 Ruwenzori Expedition, 1952. Volume I, Number 6 LARENTIINAE Xanthorhoe a. alluaudi (Prout) Larentia alluaudi Prout, 1932 (January), Mem. Soc. zool. Fr., 29: 429. RUWENZORI: Nyamaleju, 10,530 ft. (Fletcher) 4 3; Bigo, 11,400 ft. (Fletcher), 35 3. The type of X. alluaudi was supposed to have been collected at an altitude of 2800-3000 metres in the alpine meadows of Mt. Kilimandjaro in 1909 by Alluaud, but there is reason to believe that it was in fact collected on Ruwenzori, probably in the Mubuku or Kabwamba valleys. Charles Alluaud and his wife collected on Kilimandjaro during the latter part of 1908 and before the end of the year had left for Uganda, arriving at Fort Portal on January 7th 1909. The early part of 1909 was spent collecting on Ruwenzori and at no time that year did they return to Kilimandjaro. X. alluaudi is abundant in the ericaceous zone of Ruwenzori but is unknown from any other locality. Similarly X. heteromorpha Hampson (1909), also supposed to have been collected by Alluaud on Kilimandjaro and recorded by Prout (I.c., p. 430), occurs commonly in the ericaceous zone of Ruwenzori and is unknown from any other locality; further, the species shows con- siderable subspecific differences at different elevations and Alluaud’s specimens match well those from the type locality. A third species, Eupithecia tricuspis Prout (1932, l.c., p. 443), was described from another Alluaud specimen labelled ‘Kilimandjaro, alpine meadows, 2800-3000 metres, 1909’; this is also common in the ericaceous zone of Ruwenzori and unknown from any other locality. In the collection of the Paris museum there are two species of Agrotidae, Epipsilia rho- dopea Hampson (1907) and Graphania tortirena Prout (1921), both collected by Alluaud and labelled Kilimandjaro but occurring commonly in the ericaceous and alpine zones of Ruwenzori and unknown from any other locality. It would seem reasonable therefore to conclude that an error of labelling has occurred and that the type locality of X. alluandi is the ericaceous zone of Ruwenzori. The series from Bigo has a wing-span varying from 31-37 mm. and that of the type, using a similar system of measurement, that is, twice the distance from centre of thorax to apex of fore wing, is 36 mm. In colour the fore wings are predominantly ochraceous tawny to orange cinna- mon irrorate with fuscous, especially in the medial area; the hind wings are light buff. The species is night-flying and abundant at light wherever there are growths of shrubby Alchemilla. The female is almost certainly brachypterous. Distribution: Ruwenzori, ericaceous zone, 10,500—11,500 ft. Xanthorhoe alluaudi hancocki (Prout) (Figures 12, 13) Larentia hancocki Prout, 1932 (December), Novit. zool., 38 :103. RUWENZORI: Lamia Valley, 11,900 ft. (Fletcher), 3 3; Kimemba Camp, 11,900 ft. (Fletcher), 2 5; Bukurungu River, 12,550 ft. (Fletcher), 4 3; Bujuku River, 12,550 ft. (Fletcher), 1 3; Nyam- | gasani Valley, 12,000-13,000 ft. (Buxton), 4 3; Namwamba Valley, 12,000-13,000 ft. (Jackson), 10 $; Lake Bujuku, 13,050 ft. (Fletcher), 48 3, 9 9; Stuhlmann Pass, 13,500 ft. (Fletcher), 4 3. Larger than a. alluaudi, having an average wing-span of 40-42 mm.; both wings are suffused with fuscous, the fore wing densely, the hind wing to a lesser degree. Some of the specimens | Geometridae IOI from the Lamia, Nyamgasani and Namwamba Valleys are intermediate in colour between a. alluaudi and a. hancocki, but the specimens from above 13,000 ft. are remarkably constant. The female is brachypterous; the much reduced fore wing is tapered distally, the basal and _ medial areas are fuscous black, the remainder being cinnamon to snuff brown irrorate with fuscous; the hind wing is rounded distally and drab with a well marked, fuscous, medial fascia. Two of the nine specimens were found inside the light trap, one was beaten from Lobelia wollastoni Baker and the remaining six were beaten from shrubby Alchemilla, which grows abundantly just above Lake Bujuku. Distribution: Ruwenzori, alpine zone. Xanthorhoe h. heteromorpha (Hampson) | Larentia heteromorpha Hampson, 1909, Trans. zool. Soc. Lond., 19 (2):128, Plate 4:61. Larentia heteromorpha Hampson, Prout, 1932, Mem. Soc. zool. Fr., 29:430 (Kilimandjaro, err. loc.). RUWENZORI: Namwamba Valley, 10,200 ft. (Jackson), 1 §; Bigo, 11,400 ft. (Fletcher), 13 3; Namwamba Valley, 12,000-13,000 ft. (Edwards), 2 §; Bujuku River, 12,100-12,550 ft. (Fletcher), 10 ¢. Variable in the amount of fuscous suffusion on the fore wing; hind wing white, sometimes slightly tinged with pale pinkish buff. Female unknown, almost certainly brachypterous. A day-flying species, which seems to prefer the wetter valleys in the upper ericaceous zone of Ruwenzori, the only locality from which the species is known. Xanthorhoe heteromorpha albicera subsp.n. Differs from the nominate subspecies in the suffusion of the fore wing and especially the hind wing with pale to warm buff. Female unknown, almost certainly brachypterous. The species flies freely in the sunshine over shrubby Alchemilla in the upper reaches of the Bukuruneu River, just below Lake Bukurungu; the habitat is considerably drier, being better drained than that of h. heteromorpha. RUWENZORI: Bukurungu River, 12,550 ft., 29-30.vii.1952 (Fletcher), 21 3, including holo- type; Nyamgasani Valley, 12,000-13,000 ft. (Buxton), 3 3. Xanthorhoe barnsi (Prout) (Figures 14, 16) Larentia barnsi Prout, 1921, Bull. Hill Mus., 1:141, Plate 18:5. ’ RUWENZORI: Namwamba Valley, 10,200 ft. (Jackson), 1 3; ibid., 10,500-11,000 ft., I Nyamgasani Valley, 11,000-12,000 ft. (Buxton), 8 3; Balirungi River, 11,200 ft. (Fletcher), 2 3; Lamia Valley, 11,900 ft. (Fletcher), 18 3, 1 9; Portal River, 12,250-12,550 ft. (Fletcher), 2 3; Nyamgasani Valley, 12,000-13,000 ft. (Buxton), 12 3; Namwamba Valley, 12,000-13,000 ft. (Jackson & Edwards), 12 3. Specimens from the lower elevations are on average rather smaller in size. The species flies freely in the sunshine wherever there are ample growths of shrubby Alchemilla on well drained ground, 3 Oy Os 102 Ruwenzori Expedition, 1952. Volume I, Number 6 The single female, which is brachypterous, was beaten from a species of Galium festooning the trunk and lower boughs of a Philippia. The fore wings are tapered distally, pale orange yellow irrorate with orange buff; medial area broad and fuscous; some fuscous irroration in the basal and distal fourths; hind wing tapered distally, pale orange yellow with a fuscous medial fascia. Distribution: Ruwenzori. Xanthorhoe wellsi capnoessa subsp.n. (Figure 17) Differs from the nominate subspecies in the colour of the hind wing, which is a smoky buff instead of smoke grey; buff colour is in evidence on the costa of the fore wing also. The underside, especially distad of the medial area, is smoky buff instead of being uniformly fuscous. The single brachypterous female was found close to a resting male, crawling on a species of Galium festooning the trunk of an arborescent Senecio. The fore wing is tapered distally, light buff irrorate with fuscous and fuscous black; postmedial fascia slenderly black followed by a fascia of clear white. Hind wing tapered distally, light buff with a fuscous medial fascia. The males fly freely in the sunshine over Helichrysum and shrubby Alchemilla. RUWENZORI: Stuhlmann Pass, 13,500 ft., 28.vii.1952 (Fletcher), holotype 3 and allotype 9; ibid., 27.vii.1952, 2 3; Stuhlmann Pass, 13,700 ft., 24.1.1949 (Salt), 2 J; Upper Butagu Valley, 13,500 ft. (Salt), 1 3. Xanthorhoe w. wellsi (Prout) (Figures 15, 18) Larentia wellsi Prout, 1928, Entomologist, 61: 274. RUWENZORI: Namwamba Valley, 12,000-13,000 ft. (Edwards), 3 3; Namwamba Valley, 14,000 ft (Jackson), 4 3; Mount Stanley, 14,500 ft. (Fletcher), 1 3; Nyamgasani Valley, 14,000- 15,000 ft. (Buxton), 7 3, 2 9. The brachypterous female has the fore wing tapered distally; the basal, medial and terminal areas are fuscous black, the remainder of the wing is light buff lightly irrorate with fuscous black. Hind wing light buff with a broad, fuscous, medial fascia. It is possible that wellsi and barnsi will prove to be subspecies of heteromorpha, for they replace each other at different elevations. The genitalia of these three allopatric, day-flying species are identical and also identical with those of the sympatric night-flying alluaudi. Xanthorhoe ablechra sp.n. (Figures 142-144) Calostigia vana Prout, 1926, Ark. Zool., t8A Number 25:6 (part). 5 24-27 mm.: Male. Palpus, head, thorax and abdomen white to pale pinkish buff irrorate with cinnamon; posterior edge of each abdominal segment with a pair of fuscous spots. Wings white to pale pinkish buff, glossy; costa of fore wing lightly irrorate with cinnamon and with a little fuscous basad; cell spot minute, often wanting; hind wing immaculate. Underside pale pinkish buff lightly and evenly irrorate with snuff brown; cell spots and postmedial fasciae fuscous, faintly marked on both wings. In the female the fore wing is densely irrorate with cinnamon, especially distad of the conspicuously lunulate, white postmedial fascia. In vana Prout both sexes are a glossy, immaculate white. Male genitalia: Uncus slender and tapered, slightly shorter than the membranous, ventral margin of the valve (ratio 13:15); in vana the uncus is still shorter (ratio 9:15). Dorsal margin of valve sclerotized, apex rounded, the whole rather broader than in vana. Apex of vesica with a cluster of four spines, equal in length to the width of the aedeagus; in vana there are two series of very short spines near the apex. _ Female genitalia: Genital plate triangular, sclerotized and ridged horizontally; two strongly sclerotized lobes, one at each side anteriorly; ductus bursae lightly sclerotized in posterior third, remainder membranous; bursa copulatrix membranous, without signa. Differs from vara in having the anterior half of the ductus bursae membranous and not sclerotized. The species is similar in colour to X. ruandana Debauche (1938) but is much smaller. UGANDA: Mt. Mgahinga, 8000 ft., 22~27.xi.1934 (Edwards), 5 3, 2 , including holotype and allotype; Kigezi District, Kanaba Gap, 7500 ft. (Edwards), 1 3; Virunga Mts., 6 3, 1 2 in the British Museum, 2 3, 2 2 in the Riksmuseum, Stockholm; Lake Bunyoni, 7500-8200 ft., 3 near Behungi, 2 3. Geometridae 103 | 1 ] > BELGIAN CONGO: Kisenyi-Rutchuru, 1 9; Ruanda District, Kabira Forest, 2 gy 1 9. Xanthorhoe vana (Prout) Calostigia vana Prout, 1926, Ark. Zool., t3A Number 25:6. UGANDA: Mt. Sabinio, 10,000-11,000 ft. (Ford), 1 | Distribution: Uganda, Virunga Mts. | Xanthorhoe phiara (Prout) Calostigia phiara Prout, 1921, Bull. Hill Mus., 1:144, Plate 18:9. RUWENZORI: Mubuku River, 8350 ft. (Fletcher), 1 3; Lake Mahoma, 9600 ft. (Fletcher), tS 3, 12; Mt. Karangora, 9900 ft. (Edwards), 4 3; Namwamba Valley, 10,200 ft. (Edwards & aceon), 38 gd, 42; Nyamaleju, 10,530 ft. (Fletcher), 42 3, 16 9; Bigo, 11,400 ft. (Fletcher), 5 3, 7 2; Nyamgasani Valley, 12,000-13,000 ft. (Buxton), 2 3, 1 9. _ The female has the white fasciae bordering the medial area of the fore wing narrowed and the remainder of the wing suffused with ochraceous tawny to ochraceous orange. The male comes to light in very large numbers but all the females taken during the 1952 expedition were beaten from moss tussocks on the boughs of Philippia species. Distribution: Ruwenzori. Xanthorhoe latissima Prout | Xanthorhoe latissima Prout, 1921, Bull. Hill Mus., 1: 140, Plate 18:7. RUWENZORI: Namwamba Valley, 10,200 ft. (Jackson), t 3; Nyamaleju, 10,530 ft. (Fletcher), Pda 9. The female differs from the male in having a much less strikingly contrasted fore wing; the ground colour is vinaceous drab irrorate with fuscous; the medial area is edged prowarlle and distally with a broad fascia of ochraceous tawny or chestnut. The glossy pearl ¢ grey medial area of the hind wing in each sex makes the species readily recognizable. Distribution: Uganda, Virunga Mts. ‘C. Africa’, type locality; possibly W. side of Ruwenzori. | 104 Ruwenzori Expedition, 1952. Volume I, Number 6 Xanthorhoe procne (Fawcett) Cidaria procne Fawcett, 1916, Proc. zool. Soc. Lond., 1916:730, Plate 1:8. RUWENzORI: Namwamba Valley, 6500 ft. (Edwards), 1 9. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 8 3, 2 9. Distribution: Kenya; Uganda; Kivu; N. Tanganyika. Xanthorhoe conchata Warren Xanthorhoe conchata Warren, 1898, Novit. zool., 5:20. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 1 3. Distribution: Kenya. Xanthorhoe sublesta (Prout) Larentia sublesta Prout, 1932, Mem. Soc. zool. Fr., 29:428. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 3 3 Distribution: Kenya. Xanthorhoe heliopharia (Swinhoe) Epirrhoe heliopharia Swinhoe, 1904, Trans. ent. Soc. Lond., 1904: 569. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3. Distribution: Kenya. Xanthorhoe transcissa leopoldi Debauche Xanthorhoe leopoldi Debauche, 1938, Expl. Parc Nat. Albert, Miss. G. F. de Witte 1933-5, Fasc. 20:20, Plates 1:9, 2:7, 8. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), t 3; Nyinabitaba, 8650 ft. (Fletcher), 2 3, 2 9. UGANDA: Mt. Mgahinga (Ford), 1 3. Distribution: Kenya (nominate subspecies); Uganda; Kivu. In specimens from Western Uganda the postmedial fascia on the fore wing is almost straight, _ as in the type series of leopoldi; in the only two specimens of f. transcissa Warren (1902) in the British Museum, the postmedial fascia is markedly incurved between veins M1 and M3. Further | material may show these differences to be merely individual, but for the present the two forms are better kept separate. One of the male specimens from Nyinabitaba matches ab. triangulata Debauche (1938). Xanthorhoe transjugata Prout Xanthorhoe transjugata Prout, 1923, Novit. zool., 30:193. Xanthorhoe mikenaria Debauche, 1938, Expl. Parc Nat. Albert, Miss. G. F. de Witte 1933-5, Fasc. 20:22, Plates 1:3, 3:1, 2. Syn. nov. Geometridae IOS RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 Distribution: Kenya; Uganda; Kivu. In addition to the above records, there are single specimens from Nyasaland, Natal, Cape Province and Cameroons. aA O- Xanthorhoe brachytoma Prout Xanthorhoe transjugata brachytoma Prout, 1933, in Seitz, Gross-schmett. Erde, 16:85. RUWENZORI: Misigo, 8550 ft. (Fletcher), 1 2 Qo. Distribution: Kivu. In addition to the superficial differences between brachytoma and transjugata Prout, mentioned by Prout in his original description of brachytoma, there are differences in the structure of the male genitalia. In transjugata the process on the dorsal margin of the valve is equal in length to the width of the valve, extends to its apex and is twice as long as that of brachytoma. In transjugata the vesica bears three clusters of spines; in brachytoma there is only one such cluster. - Xanthorhoe oculata sp.n. (Figures 21, 145) © 32-36 mm.: Fore wing. Ground colour light buff to cinnamon; basal and medial areas and terminal area, except tornus, fuscous; proximal margin of medial area right-angled on vein Cu2 at mid-costa is a ring of the ground colour within the medial area, the cell streak at its posterior margin; fringes fuscous. Hind wing pale pinkish buff; termen and anal margin lightly irrorate with Fiscous: anal margin with traces of the transverse fasciae marked in Regence: cell spot minute; fringes warm but divided by a fascia of fuscous. Underside of both wings glossy, light to warm buff very lightly irrorate with fuscous; cell spots and lunulate postmedial fasciae clearly marked, fuscous; the fore wing, proximad of the postmedial fascia and posterior of the radius, is fuscous; fringes of both wings fuscous. Genitalia: Genital plate almost ovate, sclerotized. Ductus bursae and bursa copulatrix shaped _as figured. _ Related to transcissa Warren (1902) and to brachytoma Prout (1933) but readily distinguishable from them by the shape of the medial area of the fore wing. RUWENZORI: Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 2 9, including holotype; Nam- -wamba Valley, 10,200 ft. (Jackson), 1 9. Xanthorhoe callirrhoda sp.n. (Figures 19, 147, 148) § 30-31 mm.: Inner surface and tip of palpus tilleul buff, remainder fuscous black. Head, thorax and abdomen tilleul buffirrorate with fuscous and very lightly with cinnamon rufous to chestnut. Fore wing cinnamon rufous, basal and medial areas chestnut; medial area edged proximally and distally with white and posteriorly, along the inner margin, with fuscous; subterminal fascia represented by white spots between the veins, that between M3 and Cut being large and con- spicuous. Hind wing tilleul buff suffused with fuscous; in the distal third the veins an the anal area are cinnamon rufous to chestnut. On both wings the fringes are cinnamon rufous to chestnut proximally and chequered fuscous and tilleul buff distally. Underside of both wings tilleul buff “densely suffused with cinnamon rufous to chestnut; proximal two-thirds of both wings, except costa of fore wing, irrorate with fuscous. 106 Ruwenzori Expedition, 1952. Volume I, Number 6 Genitalia: Closely similar to those of X. brachytoma Prout (1933) but differing in the slightly shorter aedeagus, which is not tapered apicad as in that species, and in the vesica, which bears two clusters of spines, one slender apicad and one dense medially. | RUWENZORI: Mahoma River, 6700 ft., 13-16.viii.1952 (Fletcher), 2 3, including holotype; Nyinabitaba, 8650 ft (Fletcher), 2 3, in the British Museum, 1 3 (A. Holm, 1948) in the Riksmu- seum, Stockholm. Xanthorhoe argenteolineata (Aurivillius) Cidaria argenteolineata Aurivillius, 1910, Wiss. Schwed. Zool. Expedn. Kilimandjaro-Meru | 1905-6, 9:46, Plate 2:17. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 3 g; Mt. Elgon, 11,000 ft. (Edwards), 1 3. Distribution: Tanganyika, Mt. Kilimandjaro; Kenya, Aberdare Range. Xanthorhoe trientata (Warren) Ochyria trientata Warren, 1901, Novit. zool., 8:210. Cidaria asteria Fawcett, 1916, Proc. zool. Soc. Lond., 1916:729, Plate 1:7. | RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 9; Mubuku Valley, | 7800 ft. (Edwards), 1 3. | UGANDA: Fort Portal, 5000 ft. (Edwards), 1 g; Mt. Mgahinga, 8000 ft. (Edwards), 1 3. Distribution: Kenya; Uganda; Kivu; Tanganyika. Xanthorhoe exorista Prout Xanthorhoe exorista Prout, 1922, Novit. zool., 29:351. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 $; Namwamba Valley, | 6500 ft. (Edwards), 1 3. UGANDA: Fort Portal, 5000 ft. (Edwards), 2 3, 1 9. Distribution: Abyssinia southwards to Cape Colony; Uganda; Belgian Congo. | Xanthorhoe rufivenata sp.n. (Figures 20, 149-151) 3 25-27 mm.; 9 27-30 mm.: Antennae minutely ciliate in both sexes. Palpus, head, thorax and abdomen tilleul buff densely irrorate with drab and fuscous. Fore wing white; basal and medial | areas fuscous, the former edged distally, the latter edged proximally with a slender, white fascia; medial area edged distally with several very slender fasciae, alternately white and fuscous; sub- terminal fascia lunulate, slender and white, edged proximally between the veins with fuscous | spots, those between veins M1 and M3 being especially conspicuous; veins marked in cinnamon, | broadly in the distal half of the wing, distinguishing the species from the closely related submaculata | Warren (1902); cell spot black; fringes chequered fuscous and drab with some cinnamon scales at the vein ends. Hind wing tilleul buff suffused with drab, more strongly in the proximal half of the wing; postmedial fascia and cell spot fuscous; subterminal fascia traceable in some speci- mens, dentate and white, edged proximally with fuscous; veins very weakly marked with | | | | | | Geometridae 107 cinnamon; fringes chequered fuscous and drab. Underside of both wings white to tilleul buff; postmedial fascia strongly marked; proximad of it the wings are strongly suffused with fuscous, distad of it irrorate with fuscous and cinnamon; subterminal fascia white between the veins, edged proximally with fuscous. Male genitalia: As illustrated, differing from submaculata in the shorter saccus and in the vesica, which bears a slender band of spines medially; in submaculata the spine cluster is short, dense and situate apicad. Female genitalia: As illustrated. - RUWENZzORI: Mahoma River, 6700 ft. (Fletcher), 1 3; Namwamba Valley, 8300 ft. (Edwards), 1g, 19; Misigo, 8550 ft., 2-3.vili.1952 (Fletcher), 1 3, 3 9, including holotype and allotype; [RG sabicaba, 8650 f. (Fletcher), x 3, 3 Disclisioprocta natalata (Walker) | | | Scotosia natalata Walker, 1862, List Lep. Ins. B.M., 25:1351. Camptogramma polyacmaria Mabille, 1897, Ann. Soc. ent. Fr., 66:230. /Phibalapteryx vorax Strand, 1910, Soc. ent., 24:174. RUWENZORI: Bugoye, 4500 ft. (Fletcher), 1 3. | UGANDA: Bundibugyo, 3440 ft. (Fletcher), 1 3; Fort Portal, sooo ft. (Edwards), 1 3 Distribution: Africa, south of the Sahara; Madagascar; Mauritius. | Mimoclystia eucesta sp.n. (Figures 22-24, 146, 152, 153) $2 33-37 mm.: Male antenna lamellate and shortly ciliate with a pair of bristles on each segment ‘anteriorly ; female antenna similar but almost filiform. Palpus twice as long as the diameter of the eye in each sex. Fore wing very variable in colour and pattern; basal and terminal areas usually fuscous; proximal margin of medial area usually indentate mediad along the subcostal vein and ‘between veins Cu2 and At, the latter indentation sometimes extending to the distal margin, bisecting the medial area; Peace nies of wing chestnut or auburn to ochraceous tawny, ae densely irrorate with fuscous; subterminal rarely represented by more than a conspicuous, diagonal streak from the apex; cell spot fuscous black. Hind wing uniformly drab; fringes drab mixed with ochraceous tawny to cinnamon, the vein ends marked with fuscous spots; cell spot rarely marked. Underside of both wings fuscous; hind wing and costal and distal areas of fore ‘wing more or less irrorate with auburn to chestnut. _ Male genitalia: Dorsal margin of valve slenderly sclerotized and produced beyond the mem- branous part. Juxta almost heart-shaped and bearing on its ventral surface a tuft of specialized scales, which are filiform basad and spatulate apicad. Acdeagus shorter than valve and of even width. Vesica with a single, weakly sclerotized cornutus apicad and a small scobinate area mediad. Female genitalia: Posterior two-thirds of ductus bursae sclerotized, remainder membranous. Bursa copulatrix ovate and membranous with a single scobinate signum. Rather larger than M. thermochroa Hampson (1909) in wing-span; distinguished from that and other African species of Mimoclystia by the uniformly drab hind wing and the very darkly pat- iterned fore wing. | RUWENZORI: Namwamba Valley, 10,200 ft. (Jackson & Edwards), 5 3, 5 Q; Nyamaleju, 10,530 ft., 14-19.vii.1952 (Fletcher), 27 3, 16 9, including holotype and allotype; Bigo, 11,400 ft. 108 Ruwenzori Expedition, 1952. Volume I, Number 6 (Fletcher), 2 3; ibid. (A. Holm, 1948), 1 g in Riksmuseum, Stockholm; Lamia Valley, (Fletcher), 1 9; Nyamgasani Valley, 12,000-13,000 ft. (Buxton), 3 3. Mimoclystia euthygramma (Prout) Epirrhoe euthygranma Prout, 1921, Bull. Hill Mus., 1:146, Plate 18:8. RUWENZORI: Nyamgasani Valley (Buxton), 2 3, 1 Q; Misigo, 8550 ft. (Fletcher), Nyinabitaba, 8650 ft. (Fletcher), 4 3, 1 9; near Lake Mahoma, 9600 ft. (Fletcher), 1 3. Distribution: Ruwenzori; N. Kivu, Virunga Mts. Mimoclystia thermochroa (Hampson) Cidaria thermochroa Hampson, 1909, Trans. zool. Soc. Lond., 19 (2):129, Plate 4:63. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 3. Distribution: Ruwenzori, montane rain forest. Dysrhoe olbia rhiogyra (Prout) Ortholitha rhiogyra Prout, 1932, Mem. Soc. zool. Fr., 29: 424. Ortholitha olbia parvula Prout, 1932, tom. cit., p. 426. Syn. nov. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 1 3. Further material has shown this species to be sexually dimorphic and parvula to be the female | of rhiogyra; the male of olbia is not yet known. Distribution: Kenya (rhiogyra); Transvaal (olbia). Pseudolarentia monosticta (Butler) Ortholitha monosticta Butler, 1894, Proc. zool. Soc. Lond., 1894:592, Plate 37:9. Plerocymia nigrocellata Warren, 1897, Novit. zool., 4:236, Plate 5:6. KENYA: Aberdare Range, Nyeri Track, 10,500-11,000 ft. (Edwards), 1 3; Mt. 8000 ft. (Edwards), 5 3, 4 2; Mt. Elgon, 11,000-12,500 ft. (Edwards), 4 3, 2 9. Distribution: Abyssinia; Kenya; Uganda; N. Tanganyika. Pseudolarentia megalaria (Guenéc) Eubolia megalaria Guenée, 1858, Hist. nat. Ins., Spec. gén. Lép., 10: 489. Eubolia atroclarata Walker, 1863, List Lep. Ins. B.M., 26:1737. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 9. Distribution: Kenya; Uganda, westwards to Angola and southwards to Cape Province. Ecpetala gen.n. Male antenna ciliate, the cilia equal in length to the diameter of the shaft. Neuration as in Gonan- ticlea; distal margin of fore wing not excised between veins Rs5 and M3. Genitalia. Tip of uncu: spatulate in the type species. Subscaphium lightly sclerotized and densely covered with slender, weak spines. Saccus broad and concave. Tegumen with two slender, digitate processes projecting 11,900 ft. 3519 | Kinangop, Geometridae 109 anteriorly, one from each side of the base of the uncus. Labides broad and densely clothed with fine spines. Valve membranous, sack-like, apex broadly rounded, the whole ornamented with three tufts of hair scales; one is slender and situate along the ventral margin medially; two others arise from sclerotized ridges on the inner surface, one medially and one just below the apex. Aedeagus of even width, the apical fourth slightly flattened and serrate laterally. Abdomen without coremata. Type species: Gonanticlea caesiplaga Prout (1935). The gender of the generic name is feminine. All the species included in Gonanticlea by Prout in Seitz, Macrolepidoptera of the World, 16:89-90 (1935) are referable to this genus with the exception of Gonanticlea langaria Holland (1920), which is transferred to the genus Epigynopteryx (Ennominae). Ecpetala euthypora (Prout) Gonanticlea euthypora Prout, 1926, Ark. Zool., 18A Number 25:8. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 §; Nyinabitaba, 8650 ft. (Fletcher), 1 3. Distribution: Uganda, Virunga Mts. Ecpetala obtusa celaena subsp.n. _ Distinguished from other subspecies in having a uniformly fuscous hind wing. In obtusa meruana _ Aurivillius (1910) the hind wing is bright amber brown and in o. obtusa Warren (1902) the amber _ is somewhat suffused with fuscous. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 J; Bwamba Pass (west side), 5500-7500 ft. | (Edwards), 2 3; Namwamba Valley, 6500 ft. (Edwards), 1 3; Mubuku Valley, 7800 ft., 29-31. _ xii.1934 (Edwards), 5 3, including holotype; ibid., 6000 ft. (Wollaston & Legge), 2 3. Ecpetala indentata (Warren) — Gonanticlea indentata Warren, 1902, Novit. zool., 9:5 16. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 3; Misigo, 8550 ft. (Fletcher), 1 3; Nyina- _ bitaba, 8650 ft. (Fletcher), 1 9; Lake Mahoma, 9600 ft. (Fletcher), 1 9. Distribution: Uganda, Virunga Mts. Ecpetala caesiplaga (Prout) _ Gonanticlea caesiplaga Prout, 1935, in Seitz, Gross-schmett. Erde, 16:90, Plate 10:a (not Ir:g as stated in text). | RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 3. | Distribution: N. W. Kivu. | Haplolabida gen. n. (Figures 154-159) _ Antenna shortly ciliate, densely in the male, sparsely in the female; each segment bears a pair of | short bristles anteriorly. Palpus in each sex twice as long as the diameter of he eye. Apex of fore | wing acutely angled. Neuration as illustrated. 110 Ruwenzori Expedition, 1952. Volume I, Number 6 Male genitalia: Uncus slender and tapered. Saccus broadly rounded and not produced. Valve almost circular, simple. Anellus lobes semicircular. Subscaphium scobinate. Aedeagus rather longer than the valve, narrowed at one-third and again at two-thirds, tapered and sclerotized apically. Abdomen without coremata. Eighth tergite roughly triangular; eighth sternite bifurcate. Female genitalia: Genital plate shaped as illustrated. Ductus bursae cylindrical, slender and sclerotized medially, two-thirds as long as the diameter of the bursa copulatrix, which is globular and membranous with a single, scobinate signum. The simple valve and well developed anellus lobes are closely similar to those in Chloroclysta; the development of the sclerotized eighth sternite and tergite suggest a relationship with Eupithecia. Type species: Larentia monticolata Aurivillius (1910). The gender of the generic name is feminine. The following species are included in addition to the type species: Larentia sjostedti Aurivillius (1910) Tephrina inaequata Walker (186r) Perizoma coaequata Prout (1935) Haplolabida sjostedti altipeta (Prout) Larentia altipeta Prout, 1921, Bull. Hill Mus., 1:142, Plate 18:6. RUWENZORI: Namwamba Valley, 10,200 ft. (Jackson), 5 3. Superficially s. altipeta differs from s. sjostedti Aurivillius (1910) in having much less fuscous suffusion on both wings and having clear, white markings on the fore wing; the postmedial fascia is slightly dentate, not smooth as in the nominate Segoe more deeply excised basad posterior of the cell area, resulting in the posterior third being more acutely inclined tornad. In the genitalia the uncus is longer in proportion to the valve in s. altipeta (ratio 2:4) than in s. sjostedti (ratio 0°9:3°2). In s. altipeta the juxta is narrowed at one-third and the apical third is tapered; in s. sjostedti the juxta is of uniform width in the basal two-thirds. Haplolabida monticolata diplodonta subsp.n. (Figures 30, 154-159) $2 34-36 mm.: Rather smaller than m. monticolata Aurivillius (1910), which has a wing-span of 37-41 mm. On the fore wing there is much less fuscous suftusion; the transverse fasciae proximad of the postmedial, which in m. monticolata are scarcely traceable, are clearly marked in white. The postmedial fascia is broader and the white ground colour is conspicuous in the terminal area. Fringes chequered black and white. The underside of the hind wing has a broad, double, white, postmedial fascia, which is wanting in the nominate subspecies. In the male genitalia the juxta in m. diplodonta is considerably broader basad than in m. monticolata; the aedeagus in m. diplodonta is narrowed at one-third and again at two-thirds; in m. monticolata the apex is obtusely curved and only the basal fourth is narrowed. The uncus is longer in proportion to the valve in m. diplodonta | (ratio 25:43) than in m. monticolata (ratio 16:37). RUWENZORTI: Nyamaleju, 10,530 ft. (Fletcher), 2 9; Bigo, 11,400 ft. (Fletcher), 11 9; Kimemba Camp, 11,900 ft., I.vili.1952 (Fletcher), 3 3, 1 9, including holotype and allotype; Portal River, 12,250-12,550 ft. (Fletcher), 1 $; Namwamba Valley, 12,000-13,000 ft. (Jackson), 3 3. Geometridae III Piercia cognata sp.n. (Figures 160-163) Similar in size, pattern and colour to P. fumitacta Warren (1903), which is found throughout equatorial Africa from Kenya to Mt. Cameroon, but differing in the genitalia of both sexes. Male genitalia: Asymmetrical. Uncus broad, apex sharply tapered; in fumitacta the uncus is very slender. Gnathus not developed. Ventral margin of both valves folded and lightly sclerotized with a broad, blunt process arising medially ; in fumitacta the process is slenderly digitate. Dorsal margins of valve sclerotized and produced asymmetrically as illustrated; in fumitacta the costal projections are shorter, almost symmetrical and similar in shape to the right costa of cognata but with the dorsal tooth at each side more than twice as broad. Aedeagus right-angled medially, apex tapered and slightly scobinate; in fumitacta the aedeagus is shorter, stouter and right-angled just below the apex. Vesica with a single cornutus tapered basad, one-fifth as long as the aedeagus; in fumitacta the single cornutus is tapered apicad and is one-seventh as long as the aedeagus. Female genitalia: Ductus bursae shaped as illustrated and strongly sclerotized; in fumitacta it is of almost even width, slightly narrowed posteriorly and two-thirds as broad as long. Bursa copulatrix globular and membranous with a single, scobinate signum; in fumitacta the bursa copulatrix is ovate. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 3, holotype, 1 Q, allotype. | RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 3; ibid., 6500 ft. (Edwards), ~1 4; Namwamba Valley (Edwards), 1 9. | Piercia ansorgei (B.-Baker) _Eucymatoge ansorgei B.-Baker, 1913, Ann. Mag. nat. Hist., (8) 11:572. RuWENzoRI: Ibanda, 4700 ft. (Fletcher), 1 3; Kilembe, 4500 ft. (Edwards), t 3. | UGANDA: Bundibugyo, 3440 ft. (Fletcher), 2 3, 3 9. Distribution: Uganda; Belgian Congo; Cameroons; Angola. Piercia kennedyi sp.n. (Figures 25, 165-168) 3 31-34 mm.; 2 26-32 mm.: Inner and upper surfaces of palpus warm buff, remainder warm sepia. Frons light elm green above, warm sepia below. Head light elm green. Collar warm buff “mixed with warm sepia. Thorax light elm green mixed with warm sepia; tips of tegulae and crest on metathorax warm sepia. Abdomen light elm green and warm sepia dorsally, warm buff and warm sepia laterally and ventrally. Male. Fore wing light elm green, costa sometimes irrorate with ochraceous orange, transverse fasciae more or less densely irrorate with warm sepia; basal fascia edged distally and medial fascia edged both proximally and distally with white; distal area lightly irrorate with warm sepia both distad and proximad of the subterminal fascia, which is white, marked only between the veins; termen black between the veins; fringes chequered warm “sepia and ochraceous orange; cell spot fuscous black. In some specimens the distal half of the medial area, between veins M3 and Cw2, is more or less ochraceous orange. Underside ochraceous orange, the proximal two-thirds posterior of the subcostal vein, suffused with drab; remainder irrorate with drab. Hind wing glossy, light buff, variable; proximal half, posterior of the radius, more or less suffused with drab; subterminal lunulate, of irregular width, drab; sometimes the ‘wing is immaculate; fringes warm buff to ochraceous orange chequered with drab. Underside TI2 Ruwenzori Expedition, 1952. Volume I, Number 6 similar. In the female the basal and medial areas of the fore wing are uniformly warm sepia; the hind wing is usually suffused with drab, except for a broad postmedial fascia of warm buff. Male genitalia: Uncus broad in basal half, tapered apicad. Gnathus not developed. Valves sym- metrical, partially membranous, apex narrowly rounded; costa produced beyond apex, bifurcate, the ventral arm the longer; basal five-sixths of ventral margin sclerotized. Aedeagus sigmoid; vesica with a slender band of short spines medially. Female genitalia: Posterior half of ductus bursae sclerotized at right side; anterior half wholly sclerotized. Bursa copulatrix shaped as illustrated, the posterior half sclerotized and partially scobinate, the anterior half membranous with a single, scobinate signum. The structure of both the male and female genitalia indicate a close relationship to P. fumitacta Warren (1903); the species may be distinguished at once, however, by its very large size. It is with pleasure that I name this fine species of Piercia in honour of Professor W. Q. Kennedy, leader of the 1952 expedition. RUWENZORI: Namwamba Valley, 10,200 ft. (Jackson), 4 3, 12; Nyamgasani Valley (Buxton), t 3; Nyamaleju, 10,530 ft., 14-19.vil.1952 (Fletcher), 28 3, 4 9, including holotype and allotype; Bigo, 11,400 ft. (Fletcher), 5 3, 1 2; Lamia Valley, 11,900 ft. (Fletcher), 1 3. Piercia suavata sp.n. (Figures 27, 169) } | | Q 23-24 mm.: Frons, head and collar coloured as in the preceding species. Thorax light elm | green irrorate with warm sepia, the tips of the tegulae light buff to drab; metathorax crested as in P. kennedyi. Abdomen light buff irrorate with drab and warm sepia, less densely laterally. Fore wing of smooth appearance with a clearly defined medial area; ground colour light elm green, suffused with cinnamon in the paratype; basal fascia, best defined on costa, warm sepia; medial area dark elm green irrorate with drab or warm sepia, the proximal margin straight from the subcostal to the inner margin, the distal margin toothed on veins Mr and M3 and edged distally with white; in the paratype the medial area is suffused with cinnamon between veins Mr and M3 distad of the discocellulars; an area of drab is situate at the costa midway between the distal edge of the medial area and the apex and another, arc-shaped, at the termen between veins Scs5 and | M3; cell spot wanting. Underside warm buff, the sepia areas of the upperside suffused with drab beneath. Hind wing light buff proximad of the postmedial fascia, distad of it lightly irrorate | with drab. Underside warm buff very lightly irrorate with drab; postmedial and subterminal | fasciae slenderly drab. Fringes of both wings light buff and drab. | Genitalia: Ductus bursae very short and sclerotized. Bursa copulatrix ovate and membranous; | a lightly sclerotized band is situate posteriorly and a scobinate signum medially. The evenly coloured, well contrasted and sharply defined medial area makes P. suavata a. distinctive species in the genus; the genitalia (Figure 169), however, probably afford the most | reliable means of identification. | RUWENZORI: Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 2 9, including holotype. | Piercia chlorostola (Hampson) (Figure 164) Larentia chlorostola Hampson, 1909, Trans. zool. Soc. Lond., 19 (2):128, Plate 4:62. RUWENZORI: Namwamba Valley, 6500 ft. (Edwards), 1 9; Mahoma River, 6700 ft. (Fletcher), I 3; Misigo, 8550 ft. (Fletcher), 1 9; Mubuku River, 8350 ft. (Fletcher), 1 3; Nyinabitaba, 8650 ft. (Fletcher), 1 3, 3 9. | 7 ia i? | } | | Geometridae 113 The two specimens from the lower part of the rain forest, the female from the Namwamba Valley and the male from the Mahoma River, have both wings suffused with fuscous; in the female the eighth sternum is shorter and stouter than in typical chlorostola; possibly a subspecies. Distribution: Ruwenzori, montane rain forest. Piercia lichenaria sp.n. (Figures 28, 170, 171) 2 26 mm.: Upper surface of palpus light buff, remainder fuscous black. Collar light buff. Frons, head and thorax deep lichen green, the metathorax bearing a tuft of black scales. Fore wing deep lichen green lightly irrorate with white distally; transverse fasciae black; basal broad, edged distally with white, much reduced between subcostal and vein Ar; antemedial edged proximally and postmedial edged distally with white, broad at costa then failing; in the paratype both fasciae fail only medially; subterminal marked at the costa only in the type but in the paratype there is an additional black spot distad of the discocellulars; cell spot minute, black but wanting in the type; fringes concolorous with the wing proximally, light buff distally, spotted with black at the vein ends. Underside light buff suffused with fuscous, especially in the posterior half of the _ wing; the postmedial and subterminal fasciae are broadly marked in fuscous black in the anterior _ part of the wing; fringes light buff with fuscous black spots at the vein ends; cell spot fuscous black. Hind wing light buff suffused with drab; postmedial fascia clearly marked in fuscous; - termen deep lichen green, black at the vein ends; fringes light buff spotted with fuscous at the _ vein ends. Underside light buff irrorate with fuscous and patterned with fuscous black; post- | medial fascia and fringes as on upperside; subterminal fascia broad, failing proximally; cell spot minute. Genitalia: Ductus bursae strongly sclerotized, shaped as illustrated. Bursa copulatrix almost ovate, minutely and densely scobinate posteriorly, membranous anteriorly. Eighth sternum as illustrated. Similar in size and pattern to P. chlorostola Hampson but distinguished from it superficially by the paler green of the fore wing and the dark hind wing. In structure, differs in the female genitalia; in chlorostola the ductus bursae is slender and membranous and equal in length to the bursa copulatrix, which is ovate and membranous with a single, scobinate signum; the eighth sternum is shaped as illustrated. RUWENZORI: Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 1 9, holotype; ibid. (Gunnis), 1 9. Piercia edwardsi sp.n. (Figures 172, 173) $20 mm.: Inner and upper surfaces of palpus light buff irrorate with drab; remainder drab. Frons deep lichen green. Head and collar light buff irrorate with drab. Thorax deep lichen green irrorate with light buff and drab, the metathorax bearing a tuft of drab and fuscous black scales. Fore wing coloured and patterned as in the preceding species. Hind wing light buff, glossy and ‘immaculate. Underside of both wings light to warm buff and glossy; the fore wing irrorate with drab anteriorly, the medial area and subterminal fascia broadly marked at costa; hind wing with _postmedial fascia slenderly marked in drab. | Genitalia: Uncus slender, slightly sinuous. Gnathus not developed. Apex of juxta trifurcate. | Valve partially membranous, apex narrowly rounded; dorsal margin sclerotized and produced, ashort, digitate process arising medially and projecting dorsad; basal four-fifths of ventral margin 114 Ruwenzori Expedition, 1952. Volume I, Number 6 sclerotized with a short lip apicad. Aedeagus slender and sinuous; vesica without cornuti. Closely similar to P. chlorostola Hampson, which has a rather longer costal margin to the valve. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3; Mahoma River, 6700 ft., 13-16.vili.1952 (Fletcher), 1 3, holotype. Piercia deceptata sp.n. (Figures 26, 174-177) Coenotephria spatiosata Walker Prout nec Walker, 1932, Mem. Soc. zool. Fr., 29: 436. Similar in size, pattern and coloration to P. spatiosata Walker (1862), with which it has long been confused, but differing in the genitalia of both sexes. The areole in the fore wing is usually divided but occasionally it is undivided in both species. Male genitalia: Uncus broad and spatulate at base, tapering apicad; in spatiosata it is evenly rounded and tapered. Arms of gnathus very short and stout; in spatiosata these are not developed. Valves asymmetrical; ventral margins lightly sclerotized and folded; dorsal margins strongly sclerotized and produced, the apices shallowly bifurcate, that of the right valve being produced further than that of the left; in spatiosata the costal margin of the right valve is also produced further than that of the left; the apices of both are boldly rounded with slightly serrate edges. Manica with a small, triangular plate near apex, which may be taken for a cornutus, when the aedeagus is in situ. Aedeagus sigmoid; vesica without cornuti. Female genitalia: Ductus bursae slender and sclerotized; bursa copulatrix ovate and membran- ous with a small, scobinate signum; in spatiosata the ductus bursae is membranous except for the posterior fourth. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 2 3, 2 9, including holotype and allotype; ibid., 2200-2400 m. (Alluaud & Jeannel), 3 3; Mt. Kenya (E. Barns), 4 g, 3 93 Mt. Aberdare, 2600-2700 m. (Alluaud & Jeannel), 1 3; Teer (Alluaud & Jeannel), 1 3, 1 9. Piercia jacksoni Fletcher Piercia jacksoni Fletcher, 1956, Trans. R. ent. Soc. Lond., (B) 25:35, Plates 1:5, §:43. RUWENZORI: Mubuku River, 8350 ft. (Fletcher), 1 3. Distribution: Uganda. Piercia rufimaculata sp.n. (Figures 178, 179, 181) 3 20-21 mm.: Palpus, frons, head, thorax and abdomen light to warm buff irrorate with drab and fuscous; collar warm buff; one example has some scales of deep grape green on the frons. Fore wing deep grape green irrorate with fuscous; basal area warm sepia edged distally with a slender, | white fascia; medial area, edged both proximally and distally with slender, white fasciae, fuscous | irrorate with russet medially, especially in the cell area; termen, between veins Scs and M3, | and costa, between apex and medial area, densely suffused eich fuscous; fringes warm buff irrorate | | with fuscous; cell spot minute, black. Underside light buff and glossy, the medial and apical | areas lightly suffused with drab; postmedial fascia and cell spot fuscous. Hind wing light buff and glossy in the male, uniformly drab in the female; cell spot faintly fuscous in both sexes. | Underside of both sexes light buff and glossy, lightly irrorate with fuscous; cell spot and post- medial fascia fuscous. Geometridae IIS Male genitalia: Uncus simple and tapered apicad. Gnathus not developed. Valves symmetrical and very lightly sclerotized; costa of each produced well beyond apex and of even width with rounded tip. Aedeagus straight; vesica with a small cluster of five spines. Female genitalia: Ductus bursae almost square, strongly sclerotized. Bursa copulatrix shaped as illustrated, membranous with a single, rounded, scobinate signum. Related to P. vittata Janse (1933), from which it differs in its smaller size and the ornamentation of the vesica. RUWENZORI: Mahoma River, 6700 ft., 13-16.viii.1952 (Fletcher), 3 3, 2 9, including holotype and allotype. Piercia albivirgulata sp.n. (Figures 29, 180, 182, 183) $Q 22-24 mm.: Palpus and abdomen warm buff irrorate with fuscous, the latter with some scales of light elm green dorsally. Frons, head and thorax light elm green irrorate with fuscous. Collar warm buff. Fore wing light elm green; basal area edged distally with a slender, white fascia, medial area edged both proximally and distally with slender, white fasciae and apical area, except tip, densely irrorate with fuscous. A horizontal, white streak between veins Scs and Mi distad of the medial area distinguishes albivirgulata from all other known African species of Piercia. Cell spot fuscous. Fringes fuscous proximally, chequered warm buff and drab distally. Underside fuscous, costa and postmedial fascia warm buff lightly irrorate with fuscous. Hind wing uniformly drab, a paler postmedial fascia showing in some examples. Cell spot minute, fuscous. Fringes warm buff with fuscous spots at the vein ends. Underside warm buff lightly and evenly irrorate with fuscous except on the postmedial fascia; cell spot fuscous. Male genitalia: Uncus minute. Arms of gnathus well developed, fused and produced in the form of an uncus. Valves symmetrical; dorsal margin slenderly sclerotized and produced to a narrowly rounded apex. Aedeagus sigmoid; vesica scobinate apicad. Female genitalia: Ductus bursae shortly sclerotized. Bursa copulatrix ovate and membranous except for a small sclerotized area at one side posteriorly; signum round and scobinate. Related to the preceding species and to P. vittata Janse (1933); distinguished superficially by the presence on the fore wing of a horizontal, white streak between veins Scs and Mz distad of the medial area and structurally by the ornamentation of the vesica. | RUWENZORI: Mubuku River, 8350 ft. (Fletcher), 2 3; Misigo, 8550 ft. (Fletcher), 1 3; Nyina- bitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 6 3, 4 Q, including holotype and allotype. Piercia hargreavesi Prout Piercia hargreavesi Prout, 1935, in Seitz, Gross-schmett. Erde, 16:99, Plate 11:Aa. | RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 9. | Distribution: Uganda. | Collix foraminata Guenée | Colllix foraminata Guenée, 1858, Hist. nat. Ins., Spec. gén. Lép., 10:358. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 9. Distribution: W. Africa to Zululand; Comoro Is.; Madagascar. 116 Ruwenzori Expedition, 1952. Volume I, Number 6 Eupithecia d. dohertyi Prout Eupithecia thomasina dohertyi Prout, 1935, in Seitz, Gross-schmett. Erde, 16: 101, Plate 11:b. Eupithecia dohertyi Prout, Fletcher, 1951, Ann. Mag. nat. Hist., (12) 4: 1009, Figures 9, 15. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 9; Misigo, 8550 ft. (Fletcher), 1 9. Distribution: Kenya; Uganda. Eupithecia dohertyi fulvata Fletcher Eupithecia dohertyi fulvata Fletcher, 1951, Ann. Mag. nat. Hist., (12) 4: 1011. | RUWENZORI: Nyinabitaba, 8650 ft. (Fletcher), 2 3; Namwamba Valley, 10,200 ft. (Edwards), 23 3, 72; Nyamaleju, 10,530 ft. (Fletcher), 2 9. Distribution: Ruwenzori, principally ericaceous zone. Eupithecia fuscata Fletcher Eupithecia fuscata Fletcher, 1951, Ann. Mag. nat. Hist., (12) 4: 1012, Figures 8, 17. | RUWENZORI: Mubuku Valley, 7000-8000 ft. (Edwards), 1 3. UGANDA: Kigezi District, Mt. Mgahinga, 8000 ft. (Edwards), 1 9. Distribution: Ruwenzori and Virunga Mts. Eupithecia immodica Prout Eupithecia immodica Prout, 1926, Ark. Zool., 183A Number 25:10. | RUWENZORI: Namwamba Valley, 10,200 ft. (Edwards), 1 3, 1 9; Nyamaleju, 10,530 ft, (Fletcher), 1 9. Distribution: Ruwenzori and Virunga Mts. | Eupithecia tricuspis Prout (Figures 36, 65) Eupithecia tricuspis Prout, 1932, Mem. Soc. zool. Fr., 29:443. Eupithecia gonypetes Prout, 1934, Rev. Zool. Bot. Afr., 24:84. RUWENZORI: Namwamba Valley, 10,200 ft. (Edwards & Jackson), 3 2; Nyamaleju, 10,530 ft. (Fletcher), 3 3, 2 2; Bigo, 11,400 ft. (Fletcher), 10 3, 10 9; Kimemba Camp, 11,900 ft. (Fletcher), 2 9; Lamia Valley, 11,900 ft. (Fletcher), 1 3, 1 2; Portal River, 12,250-12,550 ft. (Fletcher), 1 3; Bukurungu River, 12,550 ft. (Fletcher), 2 3, 1 9; Nyamgasani Valley, 12,000-13,000 ft. (Buxton), | Ta ee: Distribution: Ruwenzori. The type locality of E. tricuspis Prout was supposed to have been Mt. Kilimandjaro; for reasons) _ given earlier in this paper (under Xanthorhoe a. alluaudi Prout), it is now believed to be Ruwenzori. | | Eupithecia albistrigata sp.n. (Figures 31, 67) I 2 32-36 mm.: Similar in wing-shape, colour and general pattern to tricuspis Prout. Differs super-| ficially in its larger size, the wing-span of tricuspis being 26-31 mm.; in the shape of the white, il Geometridae 117 _ dentate and distally bowed antemedial fascia, which in tricuspis is sinuous, as illustrated; in the clearly marked, white medial and postmedial fasciae, which are ill-defined and often wanting in fricuspis, and in the boldly marked, white streak, which extends from the postmedial fascia to the distal margin between veins M3 and Cut. The genitalia differ in the posterior half of the bursa copulatrix and in the shape of the eighth tergite, as will be seen from the illustrations. RUWENZORI: Namwamba Valley, 10,200 ft. (Edwards), 1 9, holotype; Nyamaleju, 10,530 ft. | (Fletcher), 1 9. Eupithecia nigropolata Fletcher (Figures 184, 185) Eupithecia nigropolata Fletcher, 1951, Ann. Mag. nat. Hist., (12) 4: 1016, Figure 21. RUWENZORI: Nyamgasani Valley (Buxton), 1 9; Bwamba Pass (west side), 5500-7500 ft. (Edwards), 2 9; Mahoma River, 6700 ft. (Fletcher), 1 2; Nyinabitaba, 8650 ft. (Fletcher), 2 3, 6 Q; Namwamba Valley, 10,200 ft. (Edwards), 9 9; ibid., 12,000-13,000 ft. (Edwards), 1 9. Distribution: Uganda. Eupithecia edwardsi Fletcher Eupithecia edwardsi Fletcher, 1951, Ann. Mag. nat. Hist., (12) 4: 1018, Figures 4, 24. RUWENZORI: Namwamba Valley, 10,200 ft. (Edwards), 1 3, 1 9; Nyamaleju, 10,530 ft. (Fletcher), 3 3, 6 2; Bigo, 11,400 ft. (Fletcher), 9 9. Distribution: Ruwenzori. Eupithecia m. mecodaedala Prout Eupithecia mecodaedala Prout, 1932, Mem. Soc. zool. Fr., 29:445. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 3 3, 4 9. Distribution: Kenya, Mt. Kenya and Aberdare Range. Eupithecia mecodaedala holmi subsp.n. 3 26-30 mm.: Larger on average than the nominate subspecies but differing principally in the colour of the hind wing, from which all trace of yellow is lost; instead the wing is white more or less suffused with drab; the transverse fasciae are marked in fuscous along the anal margin and then as dots on the veins; cell spots fuscous. KENYA: Mt. Elgon, 11,000 ft. (Edwards), 2 9; ibid., Maji ya Moto, 15-17.v.1948, 3580 m. (Holm), 2 3, 2 2, including holotype and allotype, in the Riksmuseum, Stockholm. Eupithecia ochrata Fletcher | Eupithecia ochrata Fletcher, 1951, Ann. Mag. nat. Hist., (12) 4: 1019, Figures 13, 23. UGANDA: Kigezi District, Mt. Sabinio, 10,000-11,000 ft. (Edwards), 2 3, 1 9; Mt. Mgahinga (Ford), 1 3. Distribution: Uganda, Virunga Mts. 118 Ruwenzori Expedition, 1952. Volume I, Number 6 Eupithecia ecplyta Prout Eupithecia ecplyta Prout, 1932, Mem. Soc. zool. Fr., 29: 446. KENYA: Mt. Elgon, 11,000 ft. (Edwards), 1 3. : Distribution: Kenya, Mt. Kinangop; Mt. Elgon. Eupithecia tetraglena Prout Eupithecia tetraglena Prout, 1932, Mem. Soc. zool. Fr., 29: 447. KENYA: Mt. Elgon, 11,000 ft. (Edwards), 2 3, 1 9. Distribution: Kenya, Aberdare Range; Mt. Elgon; Lumbwa. Eupithecia medilunata Prout Eupithecia medilunata Prout, 1932, Mem. Soc. zool. Fr., 29: 450. KENYA: Mt. Elgon, 11,000 ft. (Edwards), 1 3, 3 9. | Distribution: Kenya, Aberdare Range; Mt. Elgon. Eupithecia rediviva Prout Eupithecia rediviva Prout, 1917, Ann. S. Afr. Mus., 17:54. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 2 °. Distribution: Uganda; Kenya to Natal. Eupithecia somereni Prout | Eupithecia somereni Prout, 1935, in Seitz, Gross-schmett. Erde, 16: 102, Plate 11:d. | RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 3; Mubuku Valley, | 7800 ft. (Edwards), 1 3. Distribution: Kenya; Uganda. Eupithecia connexa (Warren) Tephroclystia connexa Warren, 1899, Novit. zool., 6:297. | | RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3, 3 9; Bwamba Pass (west side), 5500-7500 ft. | (Edwards), 2 3, 3 2; Namwamba Valley, 6000 ft. (Edwards), 4 3, 5 9. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 9; Semliki Forest, 2850 ft. (Fletcher), 18 3. | Distribution: Kenya; Uganda; Gold Coast; Ivory Coast. | Eupithecia proflua subvincta Prout Eupithecia subvincta Prout, 1932, Mem. Soc. zool. Fr., 29: 461. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Ford), 1 3. RUWENZORI: Namwamba Valley, 10,200 ft. (Edwards), 2 3. Distribution: Kenya, Aberdare Range. Geometridae eae) The Ruwenzori specimens are in poor condition but agree in structure with the male from Mt. Kinangop. Eupithecia resarta Prout Eupithecia resarta Prout, 1932, Mem. Soc. zool. Fr., 29:454. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 9; Ibanda, 4700 ft. (Fletcher), 1 3; Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 9. UGANDA: Fort Portal, 5000 ft. (Edwards), 2 3, 1 9. Distribution: Kenya; Uganda; Tanganyika. Eupithecia regulosa (Warren) Tephroclystia regulosa Warren, 1902, Novit. zool., 9: 512. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft (Edwards), 1 9. RUWENZORI: Nyinabitaba, 8650 ft. (Fletcher), 1 9. Distribution: Kenya; Uganda; Tanganyika; Transvaal; Natal. Eupithecia kibatiata Debauche _ Eupithecia kibatiata Debauche, 1938, Expl. Parc Nat. Albert, Miss. G. F. de Witte 1933-5, Fasc. 20:32, Plate 1:13. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3; Bwamba Pass (west side), 5500-7500 ft. (Edwards), 3 3. UGANDA: Fort Portal, 5000 ft. (Edwards), 18 g, 5 9. Distribution: Kivu; Uganda; Kenya; Tanganyika. Eupithecia semipallida Janse | Eupithecia semipallida Janse, 1933, Moths S. Africa, 2:46, Plate 4: 25, Figure 12. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 3. Distribution: Abyssinia; Kenya; Uganda; Tanganyika; S. Rhodesia. | Eupithecia undiculata Prout _Eupithecia undiculata Prout, 1932, Mem. Soc. zool. Fr., 29: 454. | Tephroclystia vermiculata Warren, 1901, Novit. zool., 8 :12. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 3 3, 1 9; Namwamba Valley, 6000 ft. (Edwards), 1 3. | UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 2; Fort Portal, sooo ft. (Edwards), 1 3. Distribution: Kenya; Tanganyika; Uganda; Belgian Congo; Angola. Eupithecia jeanneli fuliginata subsp.n. (Figures 33, 189) Differs in colour from ie jeanneli Herbulot (1953) in the suffusion of both wings with fuscous; _ the distal half of the cubitus and the proximal halves of veins M3 and Cur in the fore wing are conspicuously cinnamon. 120 Ruwenzori Expedition, 1952. Volume I, Number 6 Differs in structure only in the male, in which the eighth sternite is very slender, whilst that of the nominate subspecies is shorter and very stout (Figure 186). RUWENZORI: Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 3 3, 1 2, including holotype and allotype. Eupithecia electreofasciata sp.n. (Figures 37, 190-192) 3 19-23 mm.: Antenna ciliate, the cilia equal in length to one-half the diameter of the shaft. Palpus, frons, head and thorax white lightly irrorate with drab; tegulae conspicuously white. Abdomen white irrorate with drab and cinnamon. Fore wing shaped as in E. nanata Hiibner; ground colour tilleul buff; basal and medial areas clearly marked in fuscous along costa, posterior of which they are indicated by very light, fuscous irroration; postmedial fascia, parallel to termen, marked as fuscous streaks on veins; distal fourth of costa fuscous, divided by a pale, subterminal fascia; a band of cinnamon is situate between the postmedial and subterminal fasciae; distad of the subterminal, the wing is fuscous with the veins marked in cinnamon. Cell spot fuscous. Fringes chequered drab and tilleul buff. Underside tilleul buff densely irrorate with fuscous; a pale fascia, broadly light buff at the costa, is situate distad of the medial area; subterminal fascia pale and slender; veins pale buff in distal fourth of wing. Hind wing tilleul buff irrorate with fuscous, lightly proximally, densely distally; transverse fasciae fuscous, marked along anal margin only. Cell spots and fringes as on fore wing. Underside tilleul buff; cell spot and slender, postmedial fascia fuscous, sharply marked; distal fourth fuscous divided by a slender, pale fascia. Genitalia: Valve trapezoid; dorsal and ventral margins slenderly sclerotized; proximal and distal margins parallel, the latter twice as long as the former. Vesica with two cornuti situate basad, each one-half as long as the aedeagus, and some scobinate ridges medially. Eighth sternum very weakly sclerotized and similar in shape to that of j. jeanneli Herbulot (Figure 186). RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 4 3; Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 3 3, including holotype. UGANDA: Kigezi District, Mafuga Forest (Jackson), 1 3. Eupithecia evansi sp.n. (Figures 32, 187, 188) 3S 33-35 mm.: Closely similar in colour and pattern to the preceding species. Fore wing tilleul buff; costal area, to subcostal vein, uniformly fuscous edged posteriorly with cinnamon; post- medial fascia fuscous marked as streaks on medial and cubital veins; distal third of wing cinna- mon and suffused with fuscous near termen, except between veins Mr and M3 and between Cu2 and At; inner margin cinnamon. Genitalia: Valve shaped as in E. succenturiata Linn.; ventral margin narrowly sclerotized near base only and evenly curved to a narrowly rounded apex. Vesica ornamented similarly to that of the preceding species, the two cornuti being one-third as long as the aedeagus. Eighth sternum as illustrated. It is with pleasure that I name this fine Eupithecia in honour of Dr. G. O. Evans, British Museum zoologist on the 1952 expedition. RUWENZORI: Nyamaleju, 10,530 ft., 14-19.vii.1952 (Fletcher), 3 3, including holotype. Geometridae I21 i 4 { Eupithecia devestita (Warren) Tephroclystia devestita Warren, 1899, Novit. zool., 6:40. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 9; Nyinabitaba, 8650 ft. (Fletcher), 1 3. Distribution: Abyssinia; Kenya; Uganda; Tanganyika. Eupithecia celatisigna (Warren) _Tephroclystia celatisigna Warren, 1902, Novit. zool., 9: 510. Tephroclystia lugubriaria Swinhoe, 1904, Trans. ent. Soc. Lond., 1904:573. Syn. nov. RUWENZORI: Nyinabitaba, 8650 ft. (Fletcher), 1 3. Distribution: Kenya; Uganda. Chloroclystis protrusata Warren i] } Chloroclystis protrusata Warren, 1902, Novit. zool., 9 :507. | RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 9; Misigo, 8550 ft. (Fletcher), 1 9; Nyina- bitaba, 8650 ft. (Fletcher), 1 3. Distribution: Kenya; Uganda. | Chloroclystis tridentata sp.n. (Figures 35, 193, 194) ig 21 mm.: Antenna minutely ciliate. Palpus, frons, head, thorax and abdomen cartridge buff. Both wings cartridge buff irrorate with light grape green. On the fore wing the basal, ante- and -postmedial fasciae are fuscous, broadly marked on the costa, the postmedial especially so, then becoming very slender and broken; a broad fascia of the ground colour is situate distad of the medial area; terminal area densely irrorate with fuscous, except between veins Scs and Mr and “between M3 and Cut, and divided by a pale, slender, lunulate subterminal fascia. The hind wing is shaped as in the preceding species; the transverse fasciae are slender and broken; the terminal area is densely irrorate with fuscous, except between veins M3 and Curt. Cell spots wanting on both wings. Fringes on both wings chequered cartridge buff and fuscous. Underside drab and glossy; postmedial fascia on fore wing marked by a fuscous spot on costa; a broad fascia of cartridge buff is situate distad of the medial area on both the fore and hind wings; terminal patches of cartridge buff are situate between veins M3 and Cut on both wings and at the apex of the hind wing. _ Genitalia: Differs from the preceding species in having the valves less tapered apicad and in the vesica, which bears at the apex, three short, stout spines which are wanting in protrusata. | UGANDA: Mt. Mgahinga, 8000 ft., 22-27.ix.1934 (Edwards), holotype 3. | Trimetopia aetheraria Guenée ‘Trimetopia aetheraria Guenée, 1857, Hist. nat. Ins., Spec. gén. Lép., 9:352, Plate 5:9. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 2 3; Bundibugyo, 3440 ft. (Fletcher), 2 3. RUWENZORI: Ibanda, 4700 ft. (Fletcher) 4 3. Distribution: Abyssinia; Kenya; Uganda; Belgian Congo; Cameroons; Angola. 12 Ruwenzori Expedition, 1952. Volume I, Number 6 Hydrelia argyridia (Butler) Cataclysme argyridia Butler, 1894, Proc. zool. Soc. Lond., 1894: 592, Plate 37: 10. Eulype (2) disparata Warren, 1897, Novit. zool., 4:234, Plate 5:12. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 8 3; ibid., 8500 ft. (Ford), 3 3; ibid., 10,000 ft. (Edwards), 1 3. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 9. The four male specimens from 8500 ft. and 10,000 ft. on Mt. Kinangop match the type closely, having the medial fascia on the hind wing uniformly drab. The specimens from the lower elevations are slightly smaller with the medial fascia indicated only by weakly marked proximal and distal margins, matching disparata Warren. Distribution: Kenya; Uganda. Asthenotricha strangulata Herbulot Asthenotricha strangulata Herbulot, 1953, Bull. Soc. ent. Fr., 1953:11. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 9; Mahoma River, 6700 ft. (Fletcher), 1 2; Misigo, 8550 ft. (Fletcher), 1 3; Nyinabitaba, 8650 ft. (Fletcher), 1 3, 1. Distribution: Kenya; Uganda; Tanganyika. Asthenotricha u. unipecten (Prout) Hydrelia unipecten Prout, 1915, Novit. zool., 22: 337. RUWENZORI: Nyamgasani Valley (Buxton), 1 3; Mubuku Valley, 5250-6000 ft. (Fletcher), t 2; Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 9; Mahoma River, 6700 ft. (Fletcher), 5 3, 22; Misigo, 8550 ft. (Fletcher), 1 3. Distribution: Kenya; Uganda; Kivu. Asthenotricha straba Prout Asthenotricha straba Prout, 1921, Bull. Hill Mus., 1:148, Plate 18:11. Asthenotricha ansorgei Warren Hampson nec Warren, 1909, Trans. zool. Soc. Lond., 19 (2):127. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 3; Mubuku Valley, 7800 ft. (Edwards), t 3. Distribution: Kenya; Uganda; Belgian Congo; Angola. Asthenotricha polydora Debauche Asthenotricha polydora Debauche, 1938, Expl. Parc Nat. Albert, Miss. G. F. de Witte 1933-5, Fasc. 20:40, Plate 1:6. Asthenotricha flavicoma Warren Hampson nec Warren, 1909, Trans. zool. Soc. Lond., 19 (2):127 (1 d). Asthenotricha inutilis Warren Hampson nec Warren, 1909, loc. cit. (1 3). Geometridae 123 RUWENZORI: Mubuku Valley, 7800 ft. (Edwards), 1 3; Bwamba Pass (west side), 5500- 7500 ft. (Edwards), 1 3. Distribution: Ruwenzori; Kivu; Ruanda-Urundi. Asthenotricha pythia Debauche Asthenotricha pythia Debauche, 1938, Expl. Parc Nat. Albert, Miss. G. F. de Witte 1933-5, Fasc. 20:42, Plate 1:7. Asthenotricha flavicoma Warren Hampson nec Warren, 1909, Trans. zool. Soc. Lond., 19 (2):127 (1 3). RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 3 3, 1 9. Distribution: Uganda; Kivu. Asthenotricha lophopterata anisobapta Prout (Figure 39) Asthenotricha lophopterata anisobapta Prout, 1932, Mem. Soc. zool. Fr., 29: 468. Asthenotricha flavicoma Warren Swinhoe nec Warren, 1904, Trans. ent. Soc. Lond., 1904: 570. Asthenotricha inutilis Warren Hampson nec Warren, 1909, Trans. zool. Soc. Lond., 19 (2):127 (get 2). RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 2 3, 2 9. Distribution: Abyssinia; Kenya; Uganda; Tanganyika. Asthenotricha proschora sp.n. (Figure 34) 32 37 mm.: Closely related to the preceding species, with which it occurs. Markedly larger in | size (specimens of anisobapta from the type locality of proschora have a wing-span of 31 mm.); the wings are paler and more uniformly coloured, rougher scaled and less glossy in appearance, being an even mixture of light buff, ochraceous orange and fuscous. The underside of both wings is more densely irrorate with fuscous than in anisobapta. | RUWENzORI: Mahoma River, 6700 ft., 13-16.viii.1952 (Fletcher), 1 3, holotype and 1 9, allotype; Mubuku Valley, 7800 ft. (Edwards), 1 3. _ Asthenotricha dentatissima Warren Asthenotricha dentatissima Warren, 1899, Novit. zool., 6 :34. RUWENZORI: Nyinabitaba, 8650 ft. (Fletcher), 1 3. Distribution: Kenya; Uganda; Tanganyika. Asthenotricha barnsae Prout _ Asthenotricha barnsae Prout, 1935, in Seitz, Gross-schmett. Erde, 16:118, Plate 12:¢. | RUWENZzORI: Kilembe, 4500 ft. (Edwards), 1 2; Mahoma River, 6700 ft. (Fletcher), 3 3; » Nyinabitaba, 8650 ft. (Fletcher), 2 3. Distribution: Kenya; Uganda. 124 Ruwenzori Expedition, 1952. Volume I, Number 6 Asthenotricha serraticornis Warren Asthenotricha serraticornis Warren, 1902, Novit. zool., 9: 505. Asthenotricha dentatissima Warren Janse nec Warren, 1933, Moths S. Africa, 2:20, Plate 2:32, Figure 8. a RUWENZORI: Nyinabitaba, 8650 ft. (Fletcher), 1 3. Distribution: Kenya; Uganda; Nyasaland; Transvaal. Asthenotricha psephotaenia Prout Asthenotricha psephotaenia Prout, 1935, in Seitz, Gross-schmett. Erde, 16:118, Plate 12:¢. Asthenotricha semidivisa Warren Hampson nec Warren, 1909, Trans. zool. Soc. Lond., 19 (2): 127. RUWENZORI: Kilembe, 4500 ft. (Fletcher), 1 3, 2 2; Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 3; Mahoma River, 6700 ft. (Fletcher), 1 3, 2 9. Distribution: Kenya; Uganda. Eois rectifasciata sp.n. (Figures 38, 68) § 20 mm.; 9 22 mm.: Closely related to E. innocens Warren (1902) (Figure 69) and to E. alticola Aurivillius (1925), differing in the colour and pattern of the wings and in the female genitalia. Both wings are light pinkish cinnamon; on the fore wing the slender, fuscous, postmedial fascia is straight between veins Scs§ and Cur; in innocens and alticola the postmedial fascia is lunulate and incurved between these veins. On both wings the termen is marked with minute black dots between the veins; in the related species these markings are extended so that the termen is fuscous, interrupted only at the veins. In the female genitalia the differences in the extent of the spining of the bursa copulatrix and in the size of the respective signa may be seen from the figures (Figures 68, 69). In alticola the sclerotized part of the ductus bursae is considerably extended, being three times as long as broad. RUWENZORI: Mahoma River, 6700 ft., 13-16.vili.1952 (Fletcher), 1 3, holotype; Ibanda, 4700 ft., 4-12.ix.1952 (Fletcher), 1 9, allotype. ENNOMINAE Mauna diasporas Prout Mauna diasporas Prout, 1932, Novit. zool., 38: 108. RUWENZORI: Nyinabitaba, 8650 ft. (Fletcher), 1 9. Epigynopteryx curvimargo (Hampson) Psilocerea curvimargo Hampson, 1909, Trans. zool. Soc. Lond., 19 (2):125, Plate 4:56. Psilocerea craspigonia Hampson, 1909, tom. cit., p. 124 (allotype Q nec holotype 3). | RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 9; Namwamba Valley, 6500 ft. (Edwards), 1 3, 1 2; Mahoma River, 6700 ft. (Fletcher), 2 3; Misigo, 8550 ft. (Fletcher), 3 3; Nyinabitaba, 8650 ft. (Fletcher), 3 3. i a ee we { | Geometridae 125 Distribution: Kenya; Uganda. The three specimens from Nyinabitaba, with a wing-span of 37-39 mm., are rather larger than the specimens from the lower elevations, which average 33-36 mm. Epigynopteryx subspersa (Warren) Trisyndeta subspersa Warren, 1897, Novit. zool., 4:260. Psilocerea craspigonia Hampson, 1909, Trans. zool. Soc. Lond., 19 (2): 124, Plate 4:55. Syn. nov. RUWENZORI: Bugoye, 4500 ft. (Fletcher), 1 $; Kilembe, 4500 ft. (Edwards), 1 9. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 1 3. Distribution: Kenya; Uganda; Kivu. Epigynopteryx impunctata (Warren) Eurythecodes impunctata Warren, 1898, Novit. zool., 5:37. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 $; Namwamba Valley, 6500 ft. (Edwards), Distribution: Kenya; Uganda; Belgian Congo. a 206. Epigynopteryx mutabilis (Warren) _ Eurythecodes mutabilis Warren, 1903, Novit. zool., 10:277. _ kenya: Mt. Elgon, 8500 ft. (Edwards), 1 3. Distribution: Kenya. Epigynopteryx termininota Prout | Epigynopteryx termininota Prout, 1934, Novit. zool., 39:123. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 3. Distribution: Uganda; Tanganyika; Kivu; Fernando Po. Epigynopteryx stictigramma (Hampson) Psilocerea stictigramma Hampson, 1909, Trans. zool. Soc. Lond., 19 (2):124, Plate 4:54. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 $; Mubuku Valley, 5250- 6000 ft. (Fletcher), 1 3; ibid., 7800 ft. (Edwards), 3 $; Mahoma River, 6700 ft. (Fletcher), 2 3, 1 9; Misigo, 8550 ft. (Fletcher), 1 3, 1 9; Nyinabitaba, 8650 ft. (Fletcher), 2 3. UGANDA: Fort Portal, 5000 ft. (Edwards), 3 3. Distribution: Ruwenzori; Kivu. Xenimpia angusta Prout Xenimpia angusta Prout, 1915, Novit. zool. 22:380. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 9. Distribution: Kenya; Uganda; Belgian Congo; Ivory Coast; Senegal. 4 | | 126 Ruwenzori Expedition, 1952. Volume I, Number 6 Xenimpia albicaput Fletcher Xenimpia albicaput Fletcher, 1956, Proc. R. ent. Soc. Lond., (B) 25:41, Plate 1:6, 10 UGANDA: Masaka (Edwards), 1 3. Distribution: Uganda; West Africa, Ivory Coast to Angola. Hyposidra mixtilinea Warren Hyposidra mixtilinea Warren, 1909, Novit. zool., 16: 121. UGANDA: Bundibugyo, 3440 ft. (Fletcher), 1 3. Distribution: Uganda; Belgian Congo; Gold Coast; Nigeria; Cameroons. Sphingomima cinereomarginata (Holland) ? Coptopteryx cinereomarginata Holland, 1893, Ent. News, 4:175, Plate 9:16. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3. Distribution: Uganda; Belgian Congo; Tchad Terr.; Sierra Leone; Ivory Coast; Nigeria; Cameroons. Sphingomima viriosa Prout Sphingomima viriosa Prout, 1915, Novit. zool., 22:379. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 3. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 3. Distribution: Kenya; Uganda; Belgian Congo. Hypochrosis wittei Debauche Hypochrosis wittei Debauche, 1938, Expl. Parc Nat. Albert, Miss. G. F. de Witte 1933-5, Fasc. 20:48, Plates 1:15, $:3—-S. RUWENzORI: Namwamba Valley, 6500 ft. (Jackson), 3 3; Bwamba Pass (west side), 5500- 7500 ft. (Edwards), 1 3. - Distribution: Belgian Congo; Uganda. H. wittei, so far known from males only, may prove to be a synonym of H. maculifera Hampson (1909), known only from two females. Hypochrosis poliostola sp.n. (Figures 195, 196) 3 45 mm.: Similar in general pattern and colour to the preceding species. Differs in the fore wing in the denser suffusion of the areas proximad and distad of the medial band with light vinaceous drab. In poliostola the medial band is bordered by fasciae of the straw yellow ground colour irrorate with light vinaceous drab; in wittei these fasciae are mignonette green. In poliostola the proximal third of the hind wing is straw yellow and the remainder suffused with mignonette green and light vinaceous drab; in wittei only the anal angle is thus suffused. Geometridae 127 Genitalia: Uncus twice as long as broad, evenly tapered apicad. Arms of gnathus fused and slenderly produced as a digitate process three-quarters as long as the uncus. Vesica with a slender cornutus almost as long as the aedeagus and tapered both basad and apicad. RU WEN ZORI: Bwamba Pass (west side), 5 500-7500 ft., xii.1934-1.193 5 (Edwards), 1 3, holotype. Psilocerea semifacta Prout Psilocerea semifacta Prout, 1926, Ark. Zool., 183A Number 25:16. RUWENZORI: Namwamba Valley, 6500 ft. (Edwards), 1 9. UGANDA: Mt. Mgahinga, 8000 ft. (Edwards), 1 3. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 1 3. Distribution: Kenya; Uganda; Kivu. Psilocerea cneca Prout Psilocerea cneca Prout, 1932, Mem. Soc. zool. Fr., 29: 501. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 3. Distribution: Kenya; Uganda. Psilocerea coronata sp.n. (Figures 51, 201) 3 52 mm.: Basal three-fourths of antenna bipectinate, the longest pectinations twelve times the diameter of the shaft. Palpus a little longer than the diameter of the eye. Fore wing shaped as illustrated, pale pinkish buff densely and evenly irrorate with cinnamon buff; terminal third very lightly irrorate with fuscous; antemedial fascia, faintly marked, pale pinkish buff, bowed mediad as in immitata Janse (1932) and its Central and West Africa representative, semirufa Warren (1901); postmedial fascia cinnamon edged distally with pale pinkish buff, slightly incurved between subcostal vein and inner margin; cell spot fuscous. Underside pale buff, costa and especially the terminal area suffused with cinnamon buff to cinnamon; cell spot faintly marked. Hind wing light buff, terminal area faintly suffused with pinkish buff; cell spot minute, fuscous. Underside similar with a little fuscous irroration along costa. Genitalia: Uncus tapered, simple. Valve slightly narrower at truncate apex than at base, simple. Saccus rounded, not produced. Apex of gnathus equal in width to the apex of the valve and spined, the spines decreasing in size mediad. Aedeagus equal in length to three-quarters of the ventral margin of the valve and tapered apicad; vesica bearing seven short, stout spines near apex. KENYA: Mt. Elgon, 11,000 ft., ii.1935 (Edwards), 1 3, holotype. Psilocerea turpis rutila subsp.n. Differs from ¢. turpis Warren (1902) in the colour of the wings, which is raw sienna to ochraceous tawny on the upperside and light to pinkish buff with a few fuscous scales terminad on the under- _ side. In the nominate subspecies the wings are cinnamon buff lightly irrorate with fuscous on the upperside and pinkish buff evenly irrorate with fuscous on the underside. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 §; Nyinabitaba, 8650 ft., 7-13.vii.1952 | (Fletcher), 4 3, including holotype. BELGIAN CONGO: Lake Kivu, Rugege Forest, 7000 ft., xii.1921 (T.A. Barns), 1 3. 128 Ruwenzori Expedition, 1952. Volume I, Number 6 Xanthisthisa fulva (Warren) Psilocerea fulva Warren, 1902, Novit. zool., 9: 532. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 3. Distribution: Kenya. Xanthisthisa tarsispina (Warren) Acanthoscelis tarsispina Warren, 1901, Novit. zool., 8:215. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 $; Mahoma River, 6700 ft. (Fletcher), 1 3. Distribution: Kenya; Uganda; Tanganyika; Nyasaland. Xanthisthisa holmi sp.n. (Figures 41, 199, 200) 3 47-49 mm.: Antenna bipectinate to three-fifths, the longest pectinations, which are at one- third, equal to ten times the diameter of the shaft. Terminal segment of palpus drab, remainder ochraceous buff. Frons cartridge buff. Head light buff irrorate with drab. Thorax warm buff. Abdomen light buff. Fore wing light buff to pale ochraceous buff lightly irrorate with black; a double fascia of ochraceous buff extends diagonally from apex to one-half inner margin; proximad of and parallel to this fascia is situate a band of black densely irrorate with light buff; terminal area from vein Mr to tornus black densely irrorate with light buff. Underside ochraceous buff, distal third of costa and inner margin light buff, lightly irrorate with black; a black fascia from apex extends diagonally to one-half inner margin, slender anteriorly, broadening posteriorly. Hind wing light buff shading to pale ochraceous buff distally, anal margin sparsely irrorate with black; in some examples a diagonal fascia, faintly marked in a deep shade of buff, extends from apex to one-half anal margin. Fringes on both wings pale ochraceous buff. Underside light | ochraceous buff sparsely irrorate with black; diagonal fascia as on upperside but more strongly marked. Genitalia: Uncus simple. Apex of gnathus trapezoid and spined, the spines decreasing in size mediad. Valve shaped as illustrated, the sclerotized dorsal margin tapered and very shortly produced; process on basal half of ventral margin sclerotized and tapered, its apical half finely spined on inner edge. Aedeagus subequal to dorsal margin of valve, apex tapered and ringed with ten stout spines; vesica with a fan-shaped cluster of spines near apex. Related to X. tarsispina Warren (1901), differing superficially in the colour and pattern of the | fore wing, the almost complete absence of pattern on the hind wing and the absence of cell spots on both wings and structurally in the shorter process on the ventral margin of the valve and the | greater number of spines ringing the apex of the aedeagus. RUWENZORI: Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 2 3, including holotype in the | British Museum; ibid., 2600 metres, 11.iv.1948 (Holm), 2 3, in the Riksmuseum, Stockholm. | Miantochora venerata (Mabille) Metrocampa venerata Mabille, 1878, Bull. Soc. zool. Fr., 3:91. Hyposidra gumppenbergi Méschler, 1887, Abh. Senckenb. naturf. Ges., 15 (1):96, Figure 5. Miantochora inaequilinea Warren, 1895, Novit. zool., 2:145. Miantochora ochreomaculata Warren, 1909, Novit. zool., 16: 121. Geometridae 129 UGANDA: Bundibugyo, 3440 ft. (Fletcher), 1 3. Distribution: West Africa, Sierra Leone to Angola; Uganda. Gonodontis c. curticosta Prout Gonodontis curticosta Prout, 1932, Mem. Soc. zool. Fr., 29: 499. KENYA: Mt. Elgon, 11,000 ft. (Jackson), 1 2, bred; ibid., 11,000-12,000 ft.( Jackson), 1 3, 1 Q. Distribution: Kenya, Mt. Kinangop. G. curticosta craterias Prout (1938), described from two females, agrees in structure with the female of curticosta but has the fore wing much more densely irrorate with fuscous. Gonodontis aemoniaria eupages Prout Gonodontis eupages Prout, 1938, in Seitz, Gross-schmett. Erde, 16:144, Plate 15:e. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 1 3; Nyinabitaba, 8650 ft. (Fletcher), 1 3. UGANDA: Mt. Mgahinga, 8000 ft. (Edwards), 1 3. Distribution: Kivu. The genitalia of both sexes of G. aemoniaria Swinhoe (1904), and G. eupages Prout are identical; on that account they are now treated as subspecies. Nopia flexilinea (Warren) Anonychia flexilinea Warren, 1898, Novit. zool., 5:34. RUWENZORI: Mubuku Valley, 7800 ft. (Edwards), 2 3. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 9. Distribution: Tanganyika; Nyasaland; S. Rhodesia. Syrrhodia madecassaria (Boisduval) Geometra madecassaria Boisduval, 1833, Nouv. Ann. Mus. Hist. nat., 2: 262. Syrrhodia madecassaria Boisduval, Prout, 1932, Mem. Soc. zool. Fr., 29: 497. (Full synonymy.) RUWENZORI: Namwamba Valley, 6500 ft. (Edwards), 2 9. Distribution: Africa south of the Sahara; Madagascar. The two females recorded above and the male collected by Wollaston & Legge at 7000 ft. in the Mubuku Valley in 1906 have a wing-span of 47-49 mm. compared with the usual 38-40 mm. Tephrina exospilata (Walker) Panagra exospilata Walker, 1861, List Lep. Ins. B.M., 23 :987. Tephrina ansorgei Warren, 1898, Novit. zool., 5:253. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 $; Mubuku Valley, 7800 ft. (Edwards), 1 3. Distribution: Belgian Congo; Uganda; Kenya to Cape Colony. 130 Ruwenzori Expedition, 1952. Volume I, Number 6 Tephrina crypsispila sp.n. (Figures 43, 197, 198) 36-40 mm.: Basal two-thirds of antenna bipectinate, the longest pectinations equal to twice the diameter of the shaft. Palpus a little longer than the diameter of the eye, long-scaled beneath. Hind tibia dilate with hair pencil. Palpus, frons and head warm buff to cinnamon drab, more or less irrorate with fuscous; thorax drab grey; pectus and femora warm buff; abdomen drab grey to cinnamon drab above, warm buff beneath; metathorax and first abdominal segment bear small tufts of black scales. Fore wing: costa drab grey minutely striate with black; an 8-shaped black mark is situate just before the apex; a large, rhomboid area of pale pinkish buff, more or less irrorate with snuff brown and enclosing the white, brown-ringed cell spot, extends diagonally tornad from the middle third of the costa and is edged terminally with warm buff; remainder of wing cinnamon drab suffused with snuff brown and lightly irrorate with fuscous. Hind wing cinnamon drab and, distad of the strongly marked fuscous postmedial fascia, suffused with snuff — brown; medial fascia fuscous, weakly marked; basal fascia black; cell spot wanting; terminal interneural spots black. Underside of both wings pale smoke grey, very lightly irrorate with fuscous; fore wing with a small, black, costal spot just before the apex; subterminal fascia repre- sented by a large, black, costal spot and smaller black spots between the veins. Genitalia. Uncus broad basally, slenderly tapered apically. Arms of gnathus weak and slender. | Valve shaped as in illustration, the dorsal arm produced, with a short, hooked apex; ventral _ arm tapered to a blunt apex and bearing a dense tuft of long hairs, which arise just below the _ apex. Aedeagus rather longer than the valve; vesica with one cornutus almost one-half as long — as the aedeagus. | Distinguished from other species of Tephrina by the striking pattern of the fore wing and by — the structure of the genitalia (Figures 197, 198). RUWENZORI: Mahoma River, 13-16.viii.1952 (Fletcher), 2 3, including holotype. UGANDA: Bwamba Country, 1938 (Harper), 2 3. CAMEROONS (Schwab), 1 3; Johann-Albrechts Hohe, 1898 (Conradt), 2 3. Semiothisa normata (Walker) Tephrina normata Walker, 1861, List Lep. Ins. B.M., 23:966. Aspilates parallelaria Walker, 1863, op. cit., 26: 1680. ? Aspilates exfusaria Walker, 1863, tom. cit., p. 1683. Tephrina desiccata Walker, 1866, op. cit., 35: 1660. Epione malefidaria Mabille, 1880, C.R. Soc. ent. belge, 23:xxii. Syn. nov. Tephrinopsis congener Warren, 1897, Novit. zool., 4:113. Tephrina minoa Strand, 1915, Ent. Mitt., 4:179. RU WENZORI: Ibanda, 4700 ft. (Fletcher), 2 3; Bwamba Pass (west side), 5500-7500 ft. (Edwards), 46d. UGANDA: Fort Portal, 5000 ft. (Edwards), 1 3; Masaka (Edwards), 1 3. Distribution: Africa, south of the Sahara; Madagascar; India; Burma; Ceylon to Queensland, Meyrick’s statement (1891), repeated by Janse (1932), that the fovea of the male fore wing 1s wanting in Australian specimens is wrong; a correction was published by Turner in 1917 (Proc, Linn. Soc. N.S.W., 42:318). Geometridae 131 | Semiothisa johnstoni (Butler) | Tephrina johnstoni Butler, 1893, Proc. zool. Soc. Lond., 1893 :683. | RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 3; Mubuku Valley, 7000-8000 ft. (Edwards), 1 3. Distribution: Uganda; E. Belgian Congo; Tanganyika; Nyasaland; Transvaal; Natal. Semiothisa umbrata (Warren) _ Gubaria umbrata Warren, 1897, Novit. zool., 4: 109. _ Semiothisa sherrata Swinhoe, 1904, Trans. ent. Soc. Lond., 1904: 505. UGANDA: Bundibugyo, 3440 ft. (Fletcher), 1 9. Distribution: West Africa, Gambia to Angola; Uganda to Cape Colony; Madagascar. | | Semiothisa conturbata (Warren) | Gonodela conturbata Warren, 1898, Novit. zool., 5:251. —Gonodela punctiversa Warren, 1905, Novit. zool., 12: 402. RUWENZORI: Nyinabitaba, 8650 ft. (Fletcher), 1 9. _ Distribution: Principe I.; West Africa, French Guinea to Angola; Belgian Congo; Uganda; Tanganyika. | Semiothisa phaeostigma sp.n. (Figures 52, 70, 202, 203, 209) 3° 28-30 mm.: Cilia of male antenna rather longer than the diameter of the shaft; those of the ‘female minute. Palpus in each sex one and one-half times as long as the diameter of the eye. Palpus, frons, head, thorax and abdomen drab. Fore wing with distal margin incurved between veins Scs and M3, cinnamon drab; medial area with some cinnamon buft irroration distally along costa; antemedial and medial fasciae poorly defined, snuff brown to fuscous; a conspicuous Foscate patch, edged posteriorly with cinnamon buff and divided by a slender streak of the same [eelour, the streak inclined diagonally tornad, is situate at three-quarters costa; a second patch of fuscous black, edged proximally with cinnamon buff, is situate distad of the discocellulars ‘between veins Mz and Cu1; termen very slenderly fuscous; fringes slenderly cinnamon buff proximally, fuscous distally. Underside, posterior of the radius and vein Mt, uniformly drab; ‘costal area warm buff lightly irrorate with white, the transverse fasciae broadly marked by patches of ochraceous tawny; termen fuscous between veins Scs and M3. Hind wing, toothed at vein M3, almost uniformly drab; anal margin irrorate with cinnamon buff, on which the fuscous, transverse fasciae are poorly defined; cell spots on both wings small and fuscous; termen and fringes as on fore wing. Underside Aap irrorate with white; redial fascia fuscous; postmedial fascia broad, fuscous Snayentey and posteriorly, ochraceous tawny medially. Male genitalia: Valve shaped as in illustration. Aedeagus sclerotized both dorsally and ventrally ; vesica with one tapered cornutus. Eighth sternum shallowly U-shaped. _ Female genitalia: Genital plate semicircular, little wider than the short, slender ductus bursae. Bursa copulatrix shaped as in illustration, sclerotized posteriorly and densely but weakly and slenderly spined round the signum; otherwise membranous. As with all but the most grsileiralby patterned species of Semiothisa, S. phaeostigma is most reliably determined by the structure of the genitalia (Figures 70, 202, 203, 209). 132 Ruwenzori Expedition, 1952. Volume I, Number 6 RUWENZORI: Mahoma River, 6700 ft., 13-16. viii.1952 (Fletcher), 4 3, 1 9, including holotype and allotype. Milocera divorsa Prout Milocera divorsa Prout, 1922, Novit. zool., 29: 360. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 3. Distribution: West Africa, French Guinea to Cameroons; Kivu. Pachypalpella subalbata (Warren) Pachypalpia subalbata Warren, 1900, Novit. zool., 7:98. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 1 3. | Distribution: Abyssinia; Somaliland; Kenya; Uganda; Tanganyika. | Omphalucha katangae Prout (?) subsp. Omphalucha katangae Prout, 1934, Rev. Zool. Bot. afr., 26:86. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3; Mahoma River, 6700 ft. (Fletcher), 1 3. Distribution: Belgian Congo, Katanga. The Ruwenzori specimens have the two medial clusters of spines on the vesica reduced in size and may represent a subspecies. Buzura stringeri Prout Buzura stringeri Prout, 1938, in Seitz, Gross-schmett. Erde, 16:152, Plate 16:a. Distribution: Belgian Congo; N. Rhodesia; Nyasaland. Buzura edwardsi Prout Buzura edwardsi Prout, 1938, in Seitz, Gross-schmett. Erde, 16:153, Plate 16:a. RUWENZORI: Namwamba Valley, 6500 ft. (Edwards), 1 3. | | RUWENZORI: Bugoye, 4500 ft. (Fletcher), 2 3. | Distribution: Ruwenzori. | Colocleora sciabola Prout Colocleora sciabola Prout, 1938, in Seitz, Gross-schmett. Erde, 16:155, Plate 16:d. RU WENZORI: Mubuku Valley, 6500 ft. (Fletcher), 1 3; Mahoma River, 6700 ft. (Fletcher), 1 3. Distribution: Kivu. Colocleora divisaria (Walker) Boarmia divisaria Walker, 1860, List Lep. Ins. B.M., 21: 366. Colocleora divisaria Walker, Herbulot, 1954, Mem. Inst. Fr. Afrique noire, 40:311 (full synonymy). | | RUWENZORI: Bugoye, 4500 ft. (Fletcher), 1 3. Distribution: West Africa, Gambia to Angola; Belgian Congo; Uganda; Kenya to Natal. Geometridae 133 | Colocleora burgeoni (Prout) Cleora burgeoni Prout, 1934, Rev. Zool. Bot. afr., 26:87. RUWENZORI: Mahoma River, 6700 ft. (Fletcher), 6 3. Distribution: Ruwenzori. Colocleora hegemonica (Prout) Cleora hegemonica Prout, 1932, Mem. Soc. zool. Fr., 29:472 | RUWENZORI: Misigo, 8550 ft. (Fletcher), 1 $; Nyinabitaba, 8650 ft. (Fletcher), 6 3. Distribution: Ruwenzori. Colocleora cinnamomoneura Prout Colocleora cinnamomoneura Prout, 1938, in Seitz, Gross-schmett. Erde, 16:158, Plate 16:h. RUWENZORI: Namwamba Valley, 6500 ft. (Edwards), 1 3; Mahoma River, 6700 ft. (Fletcher), 3 Se Distribution: Kivu. Colocleora poliophasma sp.n. (Figures 53, 77, 208) ($27 mm. Antenna bipectinate to three-quarters of shaft, the longest pectinations equal to seven times the diameter of the shaft. Palpus subequal to the diameter of the eye. Hind tibia not dilate and without hair pencil. Palpus drab; lower margin of frons light buff, remainder drab; patagia warm buff; thorax, abdomen and wings light buffirrorate with drab, without pattern; cell spots fuscous. Underside similar. Genitalia. Uncus two-thirds as broad as aedeagus, tapered apicad. Apex of gnathus a broad, slightly scobinate plate. Juxta tapered apicad, extending to base of uncus, as in many species of Epigynopteryx. Valve with a long, slender process parallel to ventral margin and tipped with a cluster of spines. Aedeagus equal in length to the dorsal margin of the valve. Vesica with a short, scobinate ridge in apical third. | Distinguished from other species in the genus superficially by its small size and uniform coloration and structurally by the genitalia (Figures 77, 208). RUWENZORI: Bugoye, 4500 ft., s—10.ix.1952 (Fletcher), 1 3, holotype. Aphilopota oritropha sp.n. (Figures 40, 206, 207, 210, 211) ‘Similar in size, colour and pattern to A. ochrimacula Warren (1902) (Figures 204, 205) but differing in the genitalia of both sexes. Male genitalia: Width of uncus sharply narrowed by one-half midway between base and apex, | then evenly tapered to a minutely bifurcate tip; in ochrimacula the uncus is evenly curved from ‘the broad base to the pointed apex. Dorsal margin of valve broadly sclerotized, the apical half ‘of the inner edge coarsely spined; in ochrimacula the apex only is spined. Aedeagus shaped as in illustration; vesica-with a scobinate ridge at the right side and a spine at the left side; in ochrimacula | ‘there is a scobinate ridge at the left side. 134 Ruwenzori Expedition, 1952. Volume I, Number 6 The differences in the female genitalia, in the genital plate and the bursa copulatrix, may be _ seen from the illustrations (Figures 204-207). | RU WENZORI: Mahoma River, 6700 ft. (Fletcher), 1 3; Misigo, 8550 ft., 2-3.viii.1952 (Fletcher), | 3 3, 1, including holotype and allotype; Nyinabitaba, 8650 ft. (Fletcher), 1 9; ibid., 23.11.1924 © (Gunnis), 12; Mubuku Valley, 2600 metres, 11.iv.1948 (Holm), 1 9, in Riksmuseum, Stockholm. | i } Aphilopota calaria (Swinhoe) Biston calaria Swinhoe, 1904, Trans. ent. Soc. Lond., 1904: 527. Aphilopota calaria ab. brunneifascia Prout, 1954, Entomologist, 87: 183. Aphilopota calaria ab. zonata Prout, 1954, loc. cit. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3; Ibanda, 4700 ft. (Fletcher), 1 3. Distribution: Kenya; Uganda; Belgian Congo; Tanganyika. Menophra obtusata (Warren) | Hemerophila obtusata Warren, 1902, Novit. zool., 9: 521. | Hemerophila obtusata ab. regulata Warren, 1902, loc. cit. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 9. Distribution: Kenya; Uganda; Belgian Congo; Nyasaland; Transvaal; Natal. Menophra o. oviceps (Prout) Hemerophila oviceps Prout, 1939, in Seitz, Gross-schmett. Erde, 16, Plate 17:d; 1954, Entomologist, 87: 188. RUWENZORI: Misigo, 8550 ft. (Fletcher), 3 3. Distribution: Kivu. Menophra oviceps celaena subsp.n. 3 29-32 mm.: Smaller in size than the nominate subspecies, which has a wing-span of 36-42 mm., and much more strongly suffused with fuscous; the hind wing is almost uniformly fuscous, only. the anal angle and anal margin being lightly irrorate with ochraceous tawny. RUWENZORI: Namwamba Valley, 6500 ft. (Edwards), 1 3, holotype; Mubuku Valley, 7000- 8000 ft. (Edwards), t 3. | { | Menophra dnophera plagifera (Prout) | Hemerophila dnophera plagifera Prout, 1939, in Seitz, Gross-schmett. Erde, 16, Plate 17:g; 1954, Entomologist, 87: 188. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3; Mahoma River, 6700 ft. (Fletcher), 1 §; Nyina- bitaba, 8650 ft. (Fletcher), 2 3; Nyamgasani Valley (Buxton), 1 3. UGANDA: Fort Portal, sooo ft. (Edwards), 1 3. Distribution: Uganda; Kivu. Represented in French Guinea and Cameroons by d. dnopherd Prout (1915) and in Angola by d. leptophema Prout (1954). | Geometridae 135 Xylopteryx phaeochyta sp.n. (Figures 54, 82, 212) - $38 mm.: Antenna bifasciculate, each tuft of cilia almost twice as long as the diameter of the shaft | (ratio 7:4). Palpus one and one-half times as long as the diameter of the eye. Hind tibia not dilate and without hair pencil. Palpus, frons and thorax light drab irrorate with fuscous. Head light buff. Abdomen pale ecru drab irrorate with black; first segment black on dorsum. Fore wing buffy olive irrorate with black, except at apex, tornus and terminad between veins M3 and Cur; transverse fasciae very lightly irrorate with white; basal fascia broad and black; slender, dentate _ ante- and postmedial fasciae much broken, black; subterminal fascia broad, straight and black; an area of black between veins Mz and M3 extends from the subterminal fascia to the termen; fringes chequered black and buffy olive; cell spot ringed with black. Hind wing, including fringes, _ pale pinkish buff, termen and anal margin lightly irrorate with pinkish buff and black; cell spot _ black. Underside pale pinkish buff lightly irrorate with black; cell spots on both wings black; _ subterminal fascia and terminal area on fore wing between veins M1 and M3 black. Genitalia: Uncus broad and trilobate at apex. Gnathus slender. Valves asymmetrical, the sclero- tized ventral margin of the left valve bearing a spined process at its tip. Aedeagus tapered and sclerotized in apical third with a minute, tooth-like projection just below apex. The vesica bears _a cluster of four stout spines in basal third and a dense cluster of very slender spines medially, all _ greater in length than the width of the aedeagus. Readily distinguished from other species of Xylopteryx so far known by the pale, almost immaculate hind wing. X. sima Prout (1926) has a weakly marked hind wing but has also a dilate _ hind tibia with a hair pencil in the male. RUWENZORI: Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), t 3, holotype; ibid., 23.11.1924 (Gunnis), 1 3. Xylopteryx versicolor (Warren) Scotopteryx versicolor Warren, 1902, Novit. zool., 9: 526. Scotopteryx versicolor ab. albimedia Warren, 1902, loc. cit. Scotopteryx versicolor ab. figurata Warren, 1902, loc. cit. KENYA: Aberdare Range, Mt. Kinangop, 8000 ft. (Edwards), 1 3. Distribution: Kenya; Uganda. Oreometra vittata Aurivillius —Oreometra vittata Aurivillius, 1910, in Sjéstedt, Wiss. Ergeb. Schwed. Expedn. Kilimandjaro- ] | 1d. Meru 1905-6, 9:39, Plate 2:15. KENYA: Mt. Elgon, 11,000-12,000 ft. (Edwards), 2 3, 3 9. Distribution: Tanganyika, Mt. Kilimandjaro; Kenya, Mt. Kenya and Mt. Elgon. Ectropis ocellata Warren Ectropis ocellata Warren, 1902, Novit. zool., 9: 520. RUWENZORI: Namwamba Valley, 6500 ft. (Edwards), 1 3; Mahoma River, 6700 ft. (Fletcher), Distribution: Kenya; Uganda. 136 Ruwenzori Expedition, 1952. Volume I, Number 6 Ectropis holmi sp.n. (Figures 45, 75, 213) 3 36-38 mm.: Closely similar in size, colour and pattern to the preceding species, with which it flies. Antenna bipectinate, the longest pectinations being a little longer than the diameter of the shaft (ratio 4:3); in ocellata Warren the pectinations are almost three times as long as the diameter of the shaft (ratio 8:3). Both the fore and hind wings are white, lightly irrorate with snuff brown and patterned with fuscous; in ocellata the wings are densely irrorate with drab and snuff brown and patterned with snuff brown; holmi presents a cleaner and whiter appearance, having less dark irroration and a sharply contrasted pattern. Genitalia: Uncus broadly rounded at apex, densely spined dorsally. Valves shaped as illustrated, the ventral margin slenderly, the dorsal margin broadly sclerotized and spined; a small process bearing 10-12 stout spines arises medially. Apical third of aedeagus sclerotized and tapered; base narrowed and rounded. Vesica with one weakly sclerotized cornutus. In ocellata the apex of the uncus is concave; the medial process on the valve is smaller and bears a very dense cluster of weak spines; the apical half of the aedeagus is flattened and sclerotized, the lateral margins being irregu- larly serrate; the vesica bears one stout cornutus, which is tapered apicad. RUWENZORI: Mahoma River, 6700 ft. 13-16.vili.1952 (Fletcher), 1 3, holotype; Mubuku Valley, 2600 metres, 11.iv.1948 (Holm), 1 3, in Riksmuseum, Stockholm. Ectropis elaphrodes sp.n. (Figures 46, 81) $ 29-31 mm.: Similar in size, colour and pattern to E. anisa Prout (1915). The fore wing differs in having less snuff brown irroration proximad of the subterminal fascia. The hind wing differs in having the antemedial and double postmedial fasciae extending from the radius to the anal margin; in anisa these fasciae are marked only as spots on the anal margin. Genitalia: Uncus broad-based and tapered to a rounded apex, which is spined dorsally; in anisa the uncus is slender and not spined. Valves shaped as in illustration, ventral margin mem- branous, dorsal margin sclerotized; in anisa both margins are sinuous and membranous. A slender ridge of spines is situate at mid-valve and extends longitudinally from one-half to six-sevenths; in anisa a short, stout, spined process arises from near the base of the dorsal margin. Aedeagus tapered apicad; vesica without cornuti. In anisa the aedeagus is Y-shaped with a short, stout base, the left arm being tapered, the right arm dilate, strongly sclerotized and spined. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 §; Mahoma River, 6700 ft., 13-16.vili.1952 (Fletcher), 2 3, including holotype. BELGIAN CONGO: Plains S. of Lake Edward, viii.1925 (Mrs. E. Barns), 1 3; N.W. Kivu, Upper Oso River, 4000 ft., ii1924 (T. A. Barns), 2 3; W. Kivu, South Lowa District, Lowowo Valley, 4000 ft., iii.1924 (T. A. Barns), 1 3. Neocleora herbuloti sp.n. (Figures 44, 85, 215) $ 36-42 mm.: Previously confused with N. tulbaghata Felder (1875), from which it may be dis- tinguished by genitalia and usually by pattern. Medial area on both wings white, lightly irrorate with snuff brown to fuscous; proximad of the medial area both wings are uniformly fuscous; distad of it, white more or less irrorate with snuff brown to fuscous, slightly paler at apex; cell spots white heavily ringed with snuff brown to fuscous. Geometridae 137 Genitalia: Valve shaped as illustrated with two sclerotized processes on the ventral margin; one is short with a smoothly rounded apex and arises at one-third; the second arises from the sclerotized basal half of the ventral margin, extends parallel to the membranous apical half, almost to the apex, and is densely spined, presenting a comb-like appearance. Aedeagus with a narrowly rounded, sclerotized apex; vesica bears two short, tapered cornuti. N. tulbaghata is fully described and illustrated by Janse, 1932, Moths of S. Africa, 1:268, Plate 8:1, Figure roo. It is with pleasure that I name this species in honour of Monsieur C. Herbulot of Paris in acknowledgment of his frequent help in studying African Geometridae. MT. CAMEROON: Musake, 6350 ft., 8.1.1932 (Steele), 1 3. BELGIAN CONGO: W. Kivu, Upper Lowa River, nr. Masisi, 5000-6000 ft., ii-1924 (T. A. Barns), 1 3. UGANDA: Bundibugyo, 3440 ft., 22.vili.—3.ix.1952 (Fletcher), 1 3; Kigezi, 5500 ft. (Carpenter), 1 3, holotype. KENYA: Mt. Kenya, vii.1930 (E. Barns), 1 3; Nanyuki-Meru, 6.vii.1930 (E. Barns), 2 3. TANGANYIKA: Amani, ili-iv.1936 (Cooper), 2 3. NYASALAND: Mt. Mlanje, 25.iv.1913 (Neave), 1 3. Neocleora subcincta longifibulata subsp.n. (Figure 84) Differs from s. subcincta Warren (1901), which is known only from Sao Thomé Island, in the valve of the male genitalia; in the nominate subspecies (Figure 83) the process situate in the posterior half is one and one-half times as long as the greatest width of the valve; in subcincta longifibulata it is twice as long; both are shaped as illustrated. UGANDA: Bundibugyo, 3440 ft., 22.viii-3.ix.1952 (Fletcher), t 3, holotype, 1 9, allotype. BELGIAN CONGO: Upper Uele District, 1 J; E. Upper Ituri Valley, 30 miles S. of Irumu, 1 3. CAMEROONS: Johann-Albrechts Hohe, 3 3. ANGOLA: Quicolungo, 1 3. Neocleora melanochorda sp.n. (Figures 42, 76, 216) $50 mm.: Palpus and frons light drab; vertex and thorax drab grey irrorate with white; abdomen cinnamon drab irrorate with black, first segment with uniformly black dorsum. Fore wing: medial area white except along costa and distad of the broad, black, medial fascia, posterior of vein M3; remainder of wing cinnamon drab irrorate with fuscous and, distad of the postmedial fascia, lightly with white; dentate ante- and postmedial fasciae black; subterminal fascia fuscous, represented by spots between costa and vein Rs and between veins M1 and M3, failing elsewhere; cell spot white heavily ringed with black; terminal interneural spots fuscous; fringes drab grey. Hind wing: basal and medial fasciae broad; postmedial slender and dentate; all black; proximad of the postmedial fascia the wing is white, irrorate anteriorly and posteriorly with cinnamon drab, distad of it the wing is cinnamon drab; subterminal fascia fuscous edged distally with white; fringes, cell and terminal interneural spots as on fore wing. Underside of both wings white, the costal and terminal areas suffused with drab; apical area of fore wing, except the extreme tip, drab to fuscous; cell spots uniformly fuscous; shades of transverse fasciae showing through from upperside. 138 Ruwenzori Expedition, 1952. Volume I, Number 6 Genitalia: Valve shaped as illustrated; basal two-thirds of ventral margin sclerotized and bearing two processes; one is short and digitate and arises at one-third; the second is tapered, arises at two-thirds and extends parallel to the membranous apical third of the valve almost to the apex. Vesica with one stout cornutus, longitudinally ribbed medially, shallowly bifurcate at the apex and rather longer than one-half of the length of the aedeagus. Distinguished superficially from other species in the genus by the white medial area and the well contrasted and heavily marked medial fascia and structurally by the genitalia (Figures 76, 216). RUWENZORI: Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 1 3, holotype. Neocleora cnephaea (Prout) Cleora cnephaea Prout, 1915, Novit. zool., 22:359. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 3. Distribution: Ivory Coast; Nigeria. Lomographa pachyspila sp.n. (Figures 56, 57, 73, 74, 217) Heterostegane monilifera Prout, 1915, Novit. zool., 22:340 (part). dS 15-17 mm.; 2 17-20 mm.: Palpus, frons, head, thorax, abdomen and upperside of wings cream colour to maize yellow lightly irrorate with ochraceous tawny. Fore wing: basal, ante- and postmedial fasciae represented by broad, fuscous spots at costa; medial fascia fuscous, straight from one-half costa to one-half inner margin, the anterior half rather broader; subterminal fascia fuscous, toothed distally between veins Mr and M3 and forming a large fuscous spot extending to termen, otherwise straight from three-fourths costa to tornus, where there is a second large, fuscous spot; termen slenderly black. Underside buff yellow with a little fuscous irroration near base of wings in some examples; termen, medial and subterminal fasciae as on upperside. Hind wing with a large, fuscous spot at mid-costa, from which the slender, ochraceous tawny, medial fascia extends to one-half anal margin; subterminal fascia, toothed to termen between veins Mr and M3, otherwise straight from apex to anal angle, very slender, ochraceous tawny; termen slenderly black. Underside buff yellow; medial and postmedial fasciae, the latter usually much broken, fuscous. Male genitalia: Uncus as broad as aedeagus, apex sharply narrowed. Juxta bifid, both arms slender with rounded apices, the left arm two-thirds as long as the right. Valve shaped as in illustration. Aedeagus short and straight. Vesica without cornuti. Female genitalia: Genital plate triangular, the posterior edge usually concave and dentate. Bursa copulatrix shaped as in illustration, the apex lightly sclerotized, the remainder membranous with a signum situate medially. Differs from the closely related L. monilifera Prout (1915) superficially in the paler colour of the wings, with their complete lack of fuscous irroration, the large, fuscous spots at mid-termen and tornus of the fore wing and at mid-costa of the hind wing. Differs structurally in the juxta of the male genitalia, which in monilifera is also bifid and asymmetrical, the arms being short and stout, that on the left being angled inwards at 90° near apex; in the female genitalia of monilifera the genital plate is differently shaped from that of pachyspila and the signum on the bursa copula- trix is minute and situate in the posterior third. Geomcetridac 39 ANGOLA: Quirimba, 75 km. E. of Amboim, 300 metres, 7-12.v.1934 (Jordan), 7 3, 14 9, including holotype and allotype; Fazenda Congulu, Amboim District, 700-800 metres, 7-I1.iv.1934 (Jordan), 1 3, 1 9. GOLD Coast: Kumasi, 18.iv. (Sanders), 1 Q; Bibianaha, 23.x-2.xi.1911 (Spurrell), 1 9. IVORY COAST: I Q. OUBANGI-SHARI-TCHAD TERRITORY: I . BELGIAN CONGO: W. Kivu, South Lowa District, Lowowo Valley, 4000 ft., ili. 1924 (T. A. Barns), 1 3. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 3. Lomographa serrata sp.n. (Figures 58, 59, 71, 218, 221) > << $2 14-18 mm.: Antennae ciliate; male cilia three times as long as the diameter of the shaft; those of the female minute. Male palpus one-half as long, female palpus five-sevenths as long as the diameter of the eye. Palpus, frons, head, thorax and abdomen maize to buff yellow irrorate with cinnamon buff and drab. Fore wing variable; ground colour maize to buff yellow irrorate with cinnamon buff to orange buff; basal fourth of costa drab or fuscous; a broad, drab fascia, arising at three-eighths costa, is acutely angled near upper angle of cell and then extends straight to one-half inner margin; a broad, sinuous, drab fascia extends from seven-eighths costa to tornus; two other fasciae, one at one-third and one at two-thirds costa, are drab at the costa then become broken and slenderly cinnamon to orange buff; termen drab between the veins; cell spot rarely marked. Hind wing similar to the fore wing, except for the costa, which is un- marked. Fringes of both wings maize to buff yellow. Underside of both wings similar to upperside. Male genitalia: Uncus rather longer than broad, apex shallowly convex. Valves broadly and deeply bifurcate, slightly asymmetrical, shaped as in illustration. Apical half of juxta bifurcate, both arms serrate on inner margins, the right-hand one rather longer than the left. Aedeagus four times as long as the uncus; apex rounded. Vesica without cornuti. Female genitalia: Genital plate sclerotized and ribbed, shaped as in illustration. Ductus bursae cylindrical and membranous, scobinate in posterior sixth, twice as long as the longest diameter of the bursa copulatrix, which is ovate, membranous and without signa. Similar in size to the related L. minutissima Swinhoe (1904); differs superficially in lacking the terminal, fuscous suffusion at the tornus and between veins Mr and M3 and structurally in the _ genitalia of both sexes. In the male of minutissima the apical half of the uncus is tapered and the basal half bears two spines dorsally; in the female the genital plate is four times as broad as long. | t | | | ARABIA: Taif, 12.v—13.ix.1934 (Philby), 6 3; Hajiz, Taif foothills, Sahluj (Philby), 1 3; Mah- datha, 60 m. N.E. of Mecca (Uvarov), 1 3. SOMALILAND: Hargeisa, 4300 ft. (Hyatt), 1 3. ABYSSINIA: Dire Daoua (Uhlenhuth), 92 3, 48 2, including holotype and allotype; ibid. (Kristensen), 1 3, 1 9. KENYA: Kibwezi (Feather), 4 3, 22 ; Marigat, 4000 ft. (Evans), 2 3. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 2 3. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 3. FR. EQUATORIAL AFRICA: Air, Tehsiderak (Buchanan), 1 3. 140 Ruwenzori Expedition, 1952. Volume I, Number 6 Lomographa leroyi sp.n. (Figures 72, 88) 9 34-36 mm.: Antenna filiform. First segment of palpus white, second and third segments cinna- mon drab. Frons cinnamon drab. Vertex fuscous. Thorax and abdomen white. Fore wing white and glossy, very lightly irrorate with drab grey; pattern drab grey consisting of four ill-defined, transverse fasciae, which are straight and parallel to the termen; the first is broad and extends from one-fourth costa to one-fourth inner margin; the second is slender and extends from one-half costa to one-half inner margin; the third and fourth are closely approximated and are situate between the second fascia and the termen, which is slenderly drab grey. Fringes white with two slender, parallel drab grey fasciae. Hind wing patterned similarly to fore wing; first and second fasciae straight from costa to inner margin; third and fourth fasciae curved parallel to termen. Underside of both wings white. Genitalia: Ductus bursae sclerotized, narrowed slightly anteriorly. Bursa copulatrix shaped as in illustration, the posterior third sclerotized and ribbed, the remainder membranous with a stellate signum at the right side in the anterior third. Placed provisionally in the genus Lomographa because of affinities shown in the structure of the genitalia. Distinguished from other known species of African Ennominae by the glossy, white wings. RUWENZORI: Nyinabitaba, 8650 ft., 7-13.vii.1952 (Fletcher), 1 2, holotype. BELGIAN CONGO: Kivu, Rwankwi, 24.viii.1947 (Leroy), 1 2, in coll. Congo Museum, Tervueren. Encoma irisaria Swinhoe Encoma irisaria Swinhoe, 1904, Trans. ent. Soc. Lond., 1904: 523. Encoma pulviscula Prout, 1932, Mem. Soc. zool. Fr., 29:510. Syn. nov. KENYA: Mt. Kinangop, 8000 ft. (Edwards), 4 3, 2 9; Mt. Elgon, 11,000 ft. (Edwards), 1 3. UGANDA: Mt. Mgahinga, 8000 ft. (Edwards), 1 3, 1 9. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 3; Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 9; Mubuku Valley, 7800 ft. (Edwards), 1 g, 1 9; Namwamba Valley, 8300 ft. (Edwards), 1 Q. The neuration of the fore wing is variable; veins Rt and R2 may be connate or stalked; in several examples these veins are connate on one wing and stalked on the other; the wing-span ranges from 23-26 mm. Monsieur C. Herbulot has kindly compared the genitalia of the holo- type of pulviscula with those of irisaria and found them to be conspecific. Distribution: Kenya; Uganda; Kivu. Encoma rectangulata sp.n. (Figures 47, 48, 79, 219, 223) 3 33-36 mm.; 9 33-35 mm.: Antenna bipectinate; the pectinations in the male are ten times as long, those in the female four times as long as the diameter of the shaft. Fore wing light buff densely irrorate with cinnamon buff to light drab; antemedial fascia represented by drab spots on the veins, often wanting; medial fascia light drab, extending broadly from one-half costa to one-half inner margin; postmedial fascia sinuous, represented by drab spots on the veins and edged distally with a slender band of the ground colour; distad of the postmedial fascia the wing a: Geometridae 141 is uniformly drab; terminal interneural spots and rarely marked cell spot fuscous; fringes light drab proximally, paler distally. Hind wing light buff, terminal and anal margins densely irrorate with cinnamon buff to light drab; medial and postmedial fasciae marked as on fore wing; cell spot fuscous. Underside of both wings light buff irrorate with drab, densely in proximal half of fore wing; cell spots and medial fasciae heavily marked; postmedial fasciae clearly defined. Male genitalia: Uncus tapered, simple. Valve trilobate, the dorsal lobe right-angled ventrad at one-half, the apex and dorsal edge spined; middle lobe short; ventral lobe tapered. Aedeagus three times as long as broad, the apex tapered; vesica with one weak cornutus. Female genitalia: Genital plate slender and sinuous, as illustrated, with two small, sclerotized areas anteriorly. Ductus bursae and bursa copulatrix membranous, shaped as illustrated, the latter with a signum anteriorly. Differs from the closely related E. irisaria Swinhoe (1904) superficially in its considerably larger size and structurally in the genitalia of both sexes. In the male of irisaria the dorsal lobe of the valve is evenly curved ventrad and in the female there are two small, sclerotized areas posterior of the genital plate. RUWENZORI: Mt. Karangora, 9900 ft. (Edwards), 1 9; Nyamaleju, 10,530 ft., 14-19.vii.1952 (Fletcher), 4 3, 3 Q, including holotype and allotype; Namwamba Valley, 12,000-13,000 ft. (Edwards), 1 9. Zamarada differens pandatilinea Prout Zamarada pandatilinea Prout, 1916, Ann. Transvaal Mus., 5:173, Plate 25:30. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft. (Edwards), 1 3. Distribution: Ubangi-Shari-Tchad Territory; Tanganyika; S. Rhodesia; Transvaal. Repre- sented in Mozambique by d. differens Bastelberger (1907). Zamarada phaeozona Hampson Zamarada phaeozona Hampson, 1909, Trans. zool. Soc. Lond., 19 (2):123, Plate 4:51. RUWENZORI: Ibanda, 4700 ft. (Fletcher), 1 9. Distribution: Kenya; Uganda. Zamarada amicta Prout Zamarada amicta Prout, 1915, Novit. zool., 22: 344. UGANDA: Semliki Forest, 2850 ft. (Fletcher), 1 3. Distribution: Kenya; Uganda; Tanganyika; Belgian Congo. Zamarada dentata sp.n. (Figures 55, 80, 220) 3 32 mm.: Palpus, frons, head and collar light to warm buff irrorate with snuff brown. Thorax pale smoke grey to light drab. Fore wing: costa white at base, fuscous at apex, remainder warm buff; inner margin pale smoke grey at base, vinaceous drab at termen, remainder warm buff; terminal band, shaped as in illustration, vinaceous drab irrorate with snuff brown, the proximal edge very finely tawny then yellow ochre; apex and tornus paler, warm buff replacing the vinaceous drab; cell spot fuscous; remainder of wing hyaline, pale glass green. Underside. Costa Sar 142 Ruwenzori Expedition, 1952. Volume I, Number 6 and inner margin light buff. Terminal band shaped as on upperside, light buff suffused with fus- cous, except between veins M3 and Cu2; between veins R4 and M1 the fuscous suffusion extends less than half way across the terminal band from its proximal margin. Hind wing: basal fascia fuscous; anal margin light buff irrorate with fuscous; terminal band shaped as in illustration and coloured as on fore wing; cell spot fuscous; remainder of wing hyaline, pale glass green. Under- side. Costa and anal margin light buff; basal fascia fuscous; terminal band shaped as on upperside, pale buff suffused medially with fuscous, except between veins M3 and Cu2. Genitalia: Uncus narrowed to rounded apex. Valve bifid; dorsal lobe slender, sickle-shaped and tapered apicad; ventral lobe shaped as in illustration, the inner edge serrate in apical third; the expanded membranous sack at base extends to one-half of the ventral margin. Juxta, fused with base of aedeagus as in other Zamarada species, tapered and equal in length to the aedeagus, which is bifurcate in apical third, both prongs being evenly tapered; a small additional projection arises in some examples from the point of forking. Vesica with one tapered cornutus. Differs from the closely related Z. excavata B.-Baker (1913) superficially in the underside of the fore wing, in which the fuscous suffusion extends more than half way across the terminal band from its proximal margin between veins R4 and M1, and structurally in the genitalia. In excavata the membranous sack extends well beyond the apex of the valve, which is shaped differently from that of dentata and the aedeagus, also bifurcate, has one prong broad almost to the tip then sharply tapered. UGANDA: Kigezi District, Mafuga Forest, 7500-8000 ft., vi.1951 (Jackson), 1 3. RUWENZORI: Bwamba Pass (west side), 5500-7500 ft., xii.1934-i.1935 (Edwards), « 3, holo- type. BELGIAN CONGO: Ruanda District, Kabira Forest, 12 miles N. of Usumbara, 7000 ft., ii.1924 (T. A. Barns), 1 3. | { Amnemopsyche chrysoptera (Hampson) Terina chrysoptera Hampson, 1909, Trans. zool. Soc. Lond., 19 (2): 126, Plate 4:58. RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 2; Namwamba Valley, 6500 ft. (Edwards), 12; ibid. (Jackson), 1 3, 4 Q. Distribution: Uganda. | Probably a paler, less heavily banded subspecies of the West African A. niphanda Druce (1887), with which it agrees in structure. | Ochroplutodes bifurcata sp.n. (Figures 49, 50, 78, 214, 222) 3 38 mm.; 9 37 mm.: Palpus warm buff. Frons warm buff, lower edge finely white. Vertex | white. There and abdomen vinaceous buff. Male. Fore wing light pinkish cinnamon lightly | irrorate with snuff brown; medial area and an equal area distad of it suffused with cinnamon; proximal three-fourths of costa white; antemedial fascia, slightly outcurved, snuff brown edged | proximally with light buff; posenedial fascia, parallel to the antemedial, snuff brown edged | I distally with light buff; termen narrowly snuff brown except at apex and between veins M2. and Cu2; fringe white, except between veins Mz and Cu2 and at tornus, where it is light pinkish | cinnamon. Underside tilleul buff with the dark markings from the upperside showing through) unevenly; costa warm buff; termen drab. Hind wing light pinkish cinnamon lightly irrorate Geometridae 143 ximad of the postmedial fascia, which is snuff brown edged distally with ised with cinnamon; termen narrowly snuff brown between the apex and between apex and vein Mr, remainder light pinkish cinnamon. Underside re wing. Female. Wings cinnamon evenly irrorate with snuff brown. Fore fourths of costa white; antemedial fascia shaped as in male, postmedial o-thirds costa to two-thirds inner margin, both wholly white; a square situate distad of the postmedial fascia between veins M3 and Cu2. Hind _ fascia shaped as in the male, but wholly white. Fringes of both wings us broad and hooded. Saccus produced and tapered, one-third as long as as in the illustration. Ventral margin of valve bears a broad-based, sclero- ncurved, bifurcate apex. Aedeagus rather longer than valve, slender and with a slender cornutus, one-half as long as the aedeagus. nital plate sclerotized and shaped as in the illustration with two pairs of eriorly and a larger, incurved pair anteriorly; bursa copulatrix cylindrical a weakly sclerotized signum at the right side in the anterior half. > O. bisecta Warren (1904) but rather larger. Differs structurally in the the male of that species having a tapered, falcate process on the valve, with ally and a short, stout, unadorned aedeagus; the female lacks the complex renital plate. oma River, 6700 ft., 13-16.viii.1952 (Fletcher), 1 3, holotype; Bugoye, Fletcher), 1 2, allotype. 142 Ruwenzori Expedition, 1952. Volume I, Number 6 and inner margin light buff. Terminal band shaped as on upperside, light cous, except between veins M3 and Cu2; between veins R4 and Mz the fu: less than half way across the terminal band from its proximal margin. H fuscous; anal margin light buff irrorate with fuscous; terminal band shape. coloured as on fore wing; cell spot fuscous; remainder of wing hyaline, pa side. Costa and anal margin light buff; basal fascia fuscous; terminal band s] pale buff suffused medially with fuscous, except between veins M3 and Ci Genitalia: Uncus narrowed to rounded apex. Valve bifid; dorsal lobe slen tapered apicad; ventral lobe shaped as in illustration, the inner edge serra expanded membranous sack at base extends to one-half of the ventral mar base of aedeagus as in other Zamarada species, tapered and equal in length is bifurcate in apical third, both prongs being evenly tapered; a small addit in some examples from the point of forking. Vesica with one tapered corr Differs from the closely related Z. excavata B.-Baker (1913) superficiall the fore wing, in which the fuscous suffusion extends more than half wa | band from its proximal margin between veins R4 and M1, and structural! | excavata the membranous sack extends well beyond the apex of the va differently from that of dentata and the aedeagus, also bifurcate, has one pr the tip then sharply tapered. UGANDA: Kigezi District, Mafuga Forest, 7500-8000 ft., vi.1951 (Jackso1 RUWENZORI: Bwamba Pass (west side), 5500-7500 ft., xii.1934-1.1935 ( | type. BELGIAN CONGO: Ruanda District, Kabira Forest, 12 miles N. of Usuml (T. A. Barns), 1 3. | Amnemopsyche chrysoptera (Hampson) | ie Terina chrysoptera Hampson, 1909, Trans. zool. Soc. Lond., 19 (2): 126, Plate 4.50. Is RUWENZORI: Kilembe, 4500 ft. (Edwards), 1 9; Namwamba Valley, 6500 ft. (Edwards), 12; ibid. (Jackson), 1 3, 4 9. Distribution: Uganda. Probably a paler, less heavily banded subspecies of the West African A. niphanda Druce (1887),) with which it agrees in structure. } | Ochroplutodes bifurcata sp.n. (Figures 49, 50, 78, 214, 222) 3 38 mm.; 2 37 mm.: Palpus warm buff. Frons warm buff, lower edge finely white. Vertex white. Thorax and abdomen vinaceous buff. Male. Fore wing light pinkish cinnamon lightly irrorate with snuff brown; medial area and an equal area distad of it suffused with cinnamon; proximal three-fourths of costa white; antemedial fascia, slightly outcurved, snuff brown edgec proximally with light buff; postmedial fascia, parallel to the antemedial, snuff brown edgec distally with light buff; termen narrowly snuff brown except at apex and between veins M: and Cu2; fringe white, except between veins Mz and Cu2 and at tornus, where it is light pinltsl cinnamon. wader tilleul buff with the dark markings from the upperside thane throug! unevenly; costa warm buff; termen drab. Hind wing light pinkish cinnamon lightly irrorat, Geometridae 143 with snuff brown; proximad of the postmedial fascia, which is snuff brown edged distally with white, the wing is suffused with cinnamon; termen narrowly snuff brown between the apex and vein M1; fringe white between apex and vein Mr, remainder light pinkish cinnamon. Underside similar to that of the fore wing. Female. Wings cinnamon evenly irrorate with snuff brown. Fore wing: proximal three-fourths of costa white; antemedial fascia shaped as in male, postmedial fascia straight from two-thirds costa to two-thirds inner margin, both wholly white; a square spot of straw yellow is situate distad of the postmedial fascia between veins M3 and Cu2. Hind ‘wing, with postmedial fascia shaped as in the male, but wholly white. Fringes of both wings pinkish buff. Male genitalia: Uncus broad and hooded. Saccus produced and tapered, one-third as long as valve, which is shaped as in the illustration. Ventral margin of valve bears a broad-based, sclero- tized process with an incurved, bifurcate apex. Aedeagus rather longer than valve, slender and almost straight. Vesica with a slender cornutus, one-half as long as the aedeagus. _ Female genitalia: Genital plate sclerotized and shaped as in the illustration with two pairs of lobes, a small pair posteriorly and a larger, incurved pair anteriorly; bursa copulatrix cylindrical and membranous with a weakly sclerotized signum at the right side in the anterior half. _ Similar in pattern to O. bisecta Warren (1904) but rather larger. Differs structurally in the genitalia of both sexes, the male of that species having a tapered, falcate process on the valve, with a short projection medially and a short, stout, unadorned aedeagus; the female lacks the complex ornamentation of the genital plate. RUWENZORI: Mahoma River, 6700 ft., 13-16.viii.1952 (Fletcher), 1 3, holotype; Bugoye, 4500 ft., s—10.1x.1952 (Fletcher), 1 9, allotype. Geometridae * % FIG. 7. Scopula latimediata sp.n. paratype 3 (x 2) 2 - Scopula latimediata sp.n. holotype 3 (x ) 8. Scopula internata Guenée ab. limosata ab.n. 3. Scopula Iugubriata sp.n. holotype 3 (x 2 holotype ¢ (x 2) | 4. Scopula johnsoni sp.n. holotype 3 (x 2) 9. Scopula magnipunctata sp.n. holotype 3 (x 2) |S. Scopula macronephes sp.n. holotype © (x 2) 10. Sterrha burtti spn. paratype 3 (x 3) 6. Scopula incalcarata sp.n. holotype 3 (x 2) ir. Sterrha burtti sp.n. paratype 3 (x 2°5) ok Bar 140 FIG. 12. 13: 14. 1S. 16, Xanthorhoe alluaudi hancocki Prout 3 ( Xanthorhoe alluaudi hancocki Prout & ( Xanthorhoe barnsi Prout 3 (x 2) Xanthorloe w. wellsi Prout 3 (x 2)” Xanthorhoe barnsi Prout 2 (x 2) 2) 2) . Xanthorhoe wellsi capnoessa subsp.n. J (X 2) . Xanthorhoe w. wellsi Prout Q (x 2) . Xanthorhoe callirrhoda sp.n. holotype 3 (x 2) Xanthorhoe rufivenata sp.n. holotype 3 (x 2) - Xanthorhoe oculata sp.n. holotype & (x 2) - Mimoclystia eucesta sp.n. allotype ° (x 2) Mimoclystia eucesta sp.n. paratype § (x 2 - Mimoclystia eucesta sp.n. paratype & (x 2) - Piercia kennedyi sp.n. paratype ¢ (x 2) Geometridae Piercia deceptata sp.n. paratype & ( Piercia suavata sp.n. paratype & (x 2) Piercia lichenaria sp.n. holotype 3 (x 2) Piercia albivirgulata sp.n. allotype 2 (x 2) 147 148 Ruwenzori Expedition, 1952. Volume I, Number 6 . Haplolabida monticolata diplodonta subsp.n. holotype 3 (x 2) . Eupithecia albistrigata sp.n. holotype Q (x 2) . Eupithecia evansi sp.n. paratype 3 (x 2) . Eupithecia jeanneli fuliginata subsp.n. paratype 3 (x 2) . Asthenotricha proschora sp.n. paratype 3 (x 2) Chiloroclystis tridentata sp.n. holotype 3 (x 2) FIG. . Eupithecia tricuspis Prout 9 (x 2). . Eupithecia electreofasciata sp.n. holotype J (x 2) Eois rectifasciata sp.n. holotype & (x 2) . Asthenotricha lophopterata anisobapta Prout 3 (x2) . Xanthisthisa holimi sp.n. holotype . Aphilopota oritropha sp.n. holotype Oy . Neocleora melanocherda sp-n. holotyp Tephrina crypsispila spn. paratype YPSIS} p-n. | Geometridae FIG. (<2) 44. Neocleora herbuloti sp.n. paratype 3 (x 2) x 2) 45. Ectropis holimi sp.n. holotype F (x 2) 3 (x2) 46. Ectropis claphrodes sp.n. holotype 3 (x 2) (x 2) 149 150 Ruwenzori Expedition, 1952. Volume I, Number 6 FIG. FIG 47. Encoma rectangulata sp.n. holotype 3 (x2) 51. Psilocerea coronata sp.n. holotype 3 (* 2) 48. Encoma rectangulata sp.n. allotype Ou(<2) 52. Semiothisa phaeostigma sp.n. holotype 3 2) 49. Ochroplutodes bifurcata sp.n. holotyp ed ° 5 ae) mnie Eee eae n. holotype d 50. Ochroplutodes bifurcata sp.n. allotype 2 (x 2) 54. Xylopteryx phacochyta sp.n. holotype . 3 RES YAS FIG. 5S - Zamarada dentata sp.n. paratype 3 (x 2) - Lomographa pachyspila sp.n. holotype 3 - Lomographa pachyspila sp.n. allotype 2 - Lomographa serrata sp.n. paratype - Lomographa serrata sp.n. paratype | q (eo) >) + (x (x x D4 Geometridae NO ae te <> my Scopula lugubriata sp.n. 3 genitalia (x 50) Scopula macronephes sp.n. 2 genitalia (x 20) Scopula lugubriata sp.n. Q genitalia (x 30) Sterrha burtti sp.n. ' genitalia (x 35) ISI wn iw) Ruwenzori Expedition, 195 FIG. 64. Sterrha pediculata sp.n. 2 genitalia (x 25) 65. Eupithecia tricuspis Prout 9 genitalia (x 30) 66. Sterrha apoa sp.n. 9 genitalia (x 25) 2. Volume I, Number 6 69 FIG. 67. Eupithecia albistrigata sp.n. Q genitalia (x 25 68. Eis rectifasciata sp.n. & genitalia (x 30) 69. Fois innocens Warren © genitalia (x 30) ) J Geometridac FIG. FI¢ = a Te . § - aoa ¥ ne Dp 2 l 70. Semiothisa phaeostigma sp-n. 2 genitalia (x 20) 3. Lomogray 5] > gemitah - 71. Lomographa serrata sp-n. ¢ genitalia (x 20 74. Lomographa pach > at os = 72 / 2. Lomographa leroyi sp.n. 2 genitalia (x 16) FIG. FIG. 75. Ectropis holmi sp.n. 3 genitalia (x 25) 81. Ectropis elaphrodes sp.n. 3 genitalia (x 35) 70. 77- 78. 79. 80. Ruwenzori Expedition, 1952. Volume T, Number 6 Neocleora melanochorda sp.n. 3 genitalia(x 20) 82. Xylopteryx phaeochyta sp.n. 3 genitalia (x 35) Colocleora poliophasma sp.n. 3 genitalia (x25) 83. Neocleora s. subcincta Warren left valve (x 20) Ochroplutodes bifurcata sp.n. 3 genitalia (x25) 84. Neocleora subcincta longifibulata subsp.n. lett Encoma rectangulata spn. 3 genitalia (x 30) valve (x 16) Zamarada dentata sp.n. 3 genitalia (x 20) 85. Neocleora herbuloti sp.n. left valve (x 20) ——— Geometridae FIG. 86. Scopula sebata sp.n. holotype 3 (x 2) 87. Scopula pruinata sp.n. holotype 3 (x 2 88. Lomographa leroyi sp.n. holotype 89. Sterrha arcuata sp.n. allotype 3 (x 2 90. Sterrha apoa sp.n. holotype 3 (x 2 156 Ruwenzori Expedition, 1952. Volume I, Number 6 Prasinocyma caecata sp.n. left valve (x 35) Prasinocyma caecata sp.n. aedeagus ( 35) Prasinocyma caecata sp.n. 3 8th sternum (x 35) Prasinocyia corrugata sp.n. left valve (x 35) Prasinocyma corrugata sp.n. aedeagus (X 35) Prasinocyma corrugata sp.n. 3 8th sternum (x 35) FIG. 97- ) Os. 99. 100. TOR. Prasinocyma crenulata sp.n. left valve (x 35) Prasinocyma crenulata sp.n. aedeagus ( 35) Prasinocyma crenulata sp.n. 3 8th sternum (x 35) Prasinocyma simpliciata sp.n. right valve (x 35) Prasinocyma simp! iata sp.n. aedeagus (x 35) Geometridae 157 104 - Prasinocyma trifilifimbria uniformata subsp.n. left valve (x 35) - Prasinocyma trifilifimbria uniformata subsp.n. aedeagus (x 35) - Prasinocyma trifilifimbria uniformata subsp.n. 3 8th sternum (x 35) - Prasinocyma t. trifilifimbria Prout aedeagus (x 35) 111 BEG. 106 107 108 109 IIo Dey II2 . Prasinocyma trifilifimbria triftlifimbria Prout $ 8th sternum (x 35) . Prasinocyma triangulata sp.n. aedeagus (x 35) . Prasinocyma triangulata sp.n. J 8th sternum (x 35) . Prasinocyma inornata sp.n. left valve (x 35) . Prasinocyma inornata sp.n. aedeagus (x 35) . Prasinocyma inornata sp.n. 3 8th sternum (x 35) . Prasinocyma inornata sp.n. 2 genitalia (x 35) FIG. 113. Prasinocyma edwardsi sp.n. left valve (x 35) 114. Prasinocyma edwardsi sp.n. aedeagus (x 35) 115. Prasinocyma edwardsi sp.n. 3 8th sternum (x 35) 116. Prasinocyma edwardsi sp.n. 9 genitalia (x 25) 117. Prasinocyma inconspicuata sp.n. left valve (x 35) FIG. 118. Prasinocyma inconspicuata sp.n. aedeagus (x 35, 119. Prasinocyma inconspicuata sp.n. 3 8th sternu (x 35) 120. Scopula calcarata sp.n. aedeagus (x 60) 121. Scopula calcarata sp.n. mappa & cerata (x 55) bi Geometridae - Scopula latimediata sp.n. aedeagus (x 60) - Scopula latimediata sp.n. mappa & cerata (x 55) - Scopula magnipunctata spn. mappa & cerata (x 55) - Scopula magnipunctata sp.n. aedeagus (x 60) 1 125 27 FIG. 126 . Scopula johnsoni sp.n. aedeagus (x 60) 127. Scopula johnsoni sp.n. mappa & cerata (x $5) 128 129 . Scopula lugubriata sp.n. aedeagus (x 60) . Scopula lugubriata sp.n. mappa & cerata (x 5 ) 160 ! 135 ae FIG. | 130. Scopula pruinata sp.n. 3 genitalia (x 90) 134. Scopula sebata sp.n. mappa & cerata (x 55) 131. Scopula pruinata sp.n. aedeagus (x 90) 135. Scopula incalcarata sp.n. aedeagus (x 60) 132. Scopula pruinata spn. mappa & cerata (x 60) 136. Scopula incalcarata sp.n. mappa & cerata (>/5 133. Scopula sebata sp.n. aedeagus (x 60) 134 FIG. — Geometridae . Sterrha burtti sp.n. right valve, dorsal view (x 75) . Sterrha arcuata sp.n. aedeagus (x 60) . Sterrha burtti spn. aedeagus (x 75) - Sterrha apoa sp.n. aedeagus (x 60) “144 . Sterrha pediculata sp.n. aedeagus (x 60) . Xanthorhoe ablechra sp.n. 9 genitalia (x 45) . Xanthorhoe ablechra sp.n. right valve (x 80) . Xanthorhoe ablechra sp.n. aedeagus (x 80) 161 160 134 : FIG. 130 131 132 133 . Scopula pruinata sp.n. 3 genitalia (x 90) . Scopula pruinata sp.n. aedeagus (x 90) . Scopula pruinata sp.n. mappa & cerata (x 60) . Scopula sebata sp.n. aedeagus (x 60) 135 136 FIG. 134. Scopula sebata sp.n. mappa & cerata (x 55) 135. Scopula incalcarata sp.n. aedeagus (x 60) Geometridae - Sterrha burtti sp.n. right valve, dorsal view (x 75) . Sterrha arcuata sp.n. aedeagus (x 60) - Sterrha burtti sp.n. aedeagus (x 75) Sterrha apoa sp.n. aedeagus (x 60) 144 FIG. I4I 142 143 144 . Sterrha pediculata sp.n. aedeagus (x 60) . Xanthorhoe ablechra sp.n. 2 genitalia (x 45) . Xanthorhoe ablechra sp.n. right valve (x 80) . Xanthorhoe ablechra sp.n. aedeagus (x 80) 161 162 Ruwenzori Expedition, 1952. Volume I, Number 6 FIG. 145. Xanthorhoe oculata sp.n. 9 genitalia (x 40) 146. Mimoclystia eucesta sp.n. 9 genitalia (x 40) 147. Xanthorhoe callirrhoda sp.n. aedeagus (x 80) 148. Xanthorhoe callirrhoda sp.n. left valve (x 80) FIG. 149. 150. resis 1§2. 153% Geometridae 153. Xanthorhoe rufivenata sp.n. right valve (x 60) Xanthorhoe rufivenata sp.n. aedeagus (x 60) Xanthorhoe rufivenata sp.n. Q genitalia (x 20) Mimoclystia eucesta sp.n. aedeagus (x 60) Mimoclystia eucesta sp.n. right valve (x 60) 163 164 Ruwenzori Expedition, 1952. Volume I, Number 6 FIG. 154. 155. 156. 157. 158. 159. Haplolabida monticolata diplodonta subsp.n. 3 genitalia (x 40) Haplolabida monticolata diplodonta subsp.n. aedeagus (x 40) Haplolabida monticolata diplodonta subsp.n. 3 8th sternum (x 40) Haplolabida monticolata diplodonta subsp.n. 3 8th tergum (x 40) Haplolabida monticolata diplodonta subsp.n. . genitalia (x 40) Haplolabida monticolata diplodonta subsp.n. neuration (x 40) Geometridae 165 FIG. 160. Piercia cognata sp.n. right valve (x 80) 161. Piercia cognata sp.n. aedeagus (x 60) 162. Piercia cognata sp.n. left valve (x 60) 163. Piercia cognata sp.n. Q genitalia (x 40) 164. Piercia chlorostola Hampson @ 8th sternum (x 55) 166 FIG. 165. Piercia kennedyi sp.n. left valve (x 60) 166. Piercia kennedyi sp.n. right valve (x 60) 167. Piercia kennedyi sp.n. aedeagus (x 60) 168. Piercia kennedyi sp.n. 9 genitalia (x 40) 169. Piercia suavata sp.n. 2 genitalia (x 40) Geometridae FIG. 170 171 172 173 . Piercia lichenaria sp.n. 9 8th sternum (x 40) . Piercia lichenaria sp.n. 2 genitalia (x 40) . Piercia edwardsi sp.n. left valve (x 60) . Piercia edwardsi sp.n. aedeagus (x 60) 167 168 FIG. 174. Piercia deceptata sp.n. Q genitalia (x 40) 175. Piercia deceptata sp.n. left valve (x 60) 176. Piercia deceptata sp.n. right valve (x 60) 177. Piercia deceptata sp.n. aedeagus (X 60) 178. Piercia rufimaculata sp.n. left valve (x 60) 179. Piercia rufimaculata sp.n. aedeagus (x 60) Geometridae FIG. 180. Piercia albivirgulata sp.n. 9 genitalia (x 40) 181. Piercia rufimaculata sp.n. Q genitalia (x 40) 182. Piercia albivirgulata sp.n. aedeagus (x 60) 183. Piercia albivirgulata sp.n. 3 genitalia (x 60) 169 170 Ruwenzori Expedition, 1952. Volume I, Number 6 FIG. 184. Eupithecia nigropolata Fletcher g 8th sternum (x 70) 185. Eupithecia nigropolata Fletcher aedeagus (x 70) 186. Eupithecia j. jeanneli Herbulot g 8th sternum (x 70) 187. Eupithecia evansi sp.n. aedeagus (x 70) 188. Eupithecia evansi sp.n. 3 8th sternum (x 70) 189. Eupithecia jeanneli fuliginata subsp.n. 3 8th sternum (x 70) Geometridae 193 FIG. 190. Eupithecia electreofasciata sp.n. left valve (x 70) 191. Eupithecia electreofasciata sp.n. 3 8th sternum (x 70) 192. Eupithecia electreofasciata sp.n. aedeagus (X 70) 193. Chloroclystis tridentata sp.n. 3 8th sternum (x 70) 194. Chloroclystis tridentata sp.n. aedeagus (x 70) I7I £72 FG. 195 196. 197. 198. 199 200 201 . Hypochrosis poliostola sp.n. aedeagus (x 45) Hypochrosis poliostola sp.n. uncus & gnathus (x 45) Tephrina crypsispila sp.n. right valve (x 45) Tephrina crypsispila sp.n. aedeagus (x 45) . Xanthisthisa holmi sp.n. left valve (x 35) . Xanthisthisa holmi sp.n. aedeagus (x 35) . Psilocerea coronata sp.n. aedeagus (x 45) }04 |°5 06 | | | | 1 7 Geometridae 173 210° . Semiothisa phaeostigma sp.n. aedeagus (x 45) . Semiothisa phaeostigma sp.n. right valve (x 45) . Aphilopota ochrimacula Warren genital plate (x 45) . Aphilopota ochrimacula Warren @ genitalia (x 12) - Aphilopota oritropha sp.n. genital plate (x 45) FIG. 207. Aphilopota oritropha sp.n. §. genitalia (x 12) 208. Colocleora poliophasma sp.n. aedeagus (x 65) 209. Semiothisa phaeostigma sp.n. 3 8th sternum (x 45) 210. Aphilopota oritropha sp.n. uncus (x 65) 211. Aphilopota oritropha sp.n. aedeagus (x 65) 174 217 218 219 FIG. FIG. 212. Xylopteryx phaeochyta sp.n. aedeagus (x 40) 216. Neocleora melanochorda sp.n. aedeagus (x 40) 213. Ectropis holmi sp.n. aedeagus (x 85) 217. Lomographa pachyspila sp.n. aedeagus 214. Ochroplutodes bifurcata spn. aedeagus (x 60) 218. Lomographa serrata sp.n. aedeagus 215. Neocleora herbuloti sp.n. aedeagus (x 40) 219. Encoma rectangulata sp.n. aedeagus Geometridae FIG. 220. Zamarada dentata sp.n. aedeagus 221. Lomographa serrata sp.n. 8 genitalia 175 176 Ruwenzori Expedition, 1952. Volume I, Number 6 FIG. 222. Ochroplutodes bifurcata sp.n. 2 genitalia 223. Encoma rectangulata sp.n. 2 genitalia re Se ee aS Ze Be heen pee Rice ee Sos oe Ze se es Z = Prepon tig enema