taxonID	type	description	language	source
281887C78D051253E22EFE693571FCB0.taxon	description	1) Voronezh State University, Universitetskaya sq. 1, Voronezh, 394006, Russia. * Corresponding author, E-mail: negrobov @ list. ru 2) Voronezh State Pedagogical University, Voronezh, Lenina 86, Russia. Summary. Rhaphium curvitarsus Negrobov, Maslova et Selivanova, sp. n. is described from Sakhalin. The new species is similar to Rh. firsovi Stackelberg et Negrobov, 1976, but differs from the latter in morphology of apical segments of fore tarsi, in color of fore femora, and in morphology of hypopygium. A key to species and subspecies of Rhaphium estimated or known from Sakhalin and Kuril Islands is also provided.	en	Negrobov, O. P., Maslova, O. O., Selivanova, O. V. (2020): A NEW SPECIES OF THE GENUS RHAPHIUM (DIPTERA: DOLICHOPODIDAE) FROM SAKHALIN ISLAND. Far Eastern Entomologist 409: 21-25, DOI: 10.25221/fee.409.3, URL: http://dx.doi.org/10.25221/fee.409.3
281887C78D041250E3BBFE73320CFBB5.taxon	description	Figs 1 – 5	en	Negrobov, O. P., Maslova, O. O., Selivanova, O. V. (2020): A NEW SPECIES OF THE GENUS RHAPHIUM (DIPTERA: DOLICHOPODIDAE) FROM SAKHALIN ISLAND. Far Eastern Entomologist 409: 21-25, DOI: 10.25221/fee.409.3, URL: http://dx.doi.org/10.25221/fee.409.3
281887C78D041250E3BBFE73320CFBB5.taxon	materials_examined	TYPE MATERIAL, Holotype – ♂, Russia: Sakhalin, 41 km N Yuzhno-Sakhalinsk, village Pokrovka, 8. VII 1982 (Shamshev leg.). The type is deposited in the collection of the Zoological Institute of the Russian Academy of Sciences in St. Petersburg. DESCRITION. Male. Body length 2.7 mm, wing length 2.5 mm. Face white with silver tint, its width in middle part approximately half as wide as postpedicel. Proboscis dark-brown. Palpus black. Frons green, shining without dusting. Antennae black. Postpedicel elongated triangular, with a pointed apex; its length longer than width. Arista located closer to top of postpedicel, without enlargement, covered with short hairs. The ratio of length and width of postpedicel to length of arista – 2.2: 0.9: 2.9. Postocular bristles yellow below. Thorax green with metallic bronze shade. Mesonotum metallic shiny, pleura with grey dusting. Propleura with group of white hairs. 5 pairs of dorsocentral setae. Acrostichal setae arranged in 2 rows. Scutellum with 2 strong marginal bristles. Legs mostly yellow, bases of fore coxa, mid and hind coxae, most of fore femur, apical part of hind femur, apical segments of mid and hind tarsi dark. Coxae with long white hairs, mid coxa below with a group of black setae forming spike. Mid and hind femora with 1 strong preapical bristle. Fore tibiae with 4 anterodorsal setae. Fore basitarsus at base with 4 black ventral setae. 2 nd tarsomere of fore tarsus curved ventrally, on apex ventrally thickened. 4 th tarsomere of fore tarsus ventrally on apex thickened, on apex with black thick curved ventral seta and yellow transparent flat seta. 5 th tarsomere of fore tarsus with group of long setae from dorsal and apical sides, their length is greater than diameter of joint. 5 th tarsomere with dorsal process. black claws and white pulvillus. Relative length of fore tibia and 5 tarsomeres (from 1 st to 5 th) is 4.7: 2.4: 2.6: 0.9: 1.0: 0.9. Mid tibia with 4 anterodorsal, 1 posterodorsal and 3 anteroventral bristles. Mid basitarsus with long ventral setae. 2 nd tarsomere of mid tarsus at base with 1 long and 1 short ventral setae. Relative length of mid tibia and 5 tarsomeres (from 1 st to 5 th) is 6.2: 3.3: 1.6: 1.5: 0.7: 0.5. Hind tibia not swollen, with 4 anterodorsal and 1 posterodorsal bristles. Hind basitarsus swollen. Relative length of hind tibiae and 5 tarsomeres (from 1 st to 5 th) is 7.4: 2.4: 2.6: 1.7: 1.1: 0.7. Wings not darkened, without spots. Costa at apex of subcostal vein without thickening. R 4 + 5 and M 1 hardly convergent at tip of wing. M 1 weakly curved. Apical part of M 4 longer than posterior transverse vein (dm-m), their length ratio is 3.6: 1.5. Anal angle of wing obtuse. Lower calypter yellow with white hairs. Halter yellow. Abdomen green, shiny, with bronze tint, with black hairs, below at base with white hairs. Hypopygium brown. Hypandrium oval, slightly longer than wide. Surstyli long, rhomboid at apex, with two long tooth-like processes at base. Cerci long, two times longer than epandrium, forked at base, with wide lateral lobe. Female unknown.	en	Negrobov, O. P., Maslova, O. O., Selivanova, O. V. (2020): A NEW SPECIES OF THE GENUS RHAPHIUM (DIPTERA: DOLICHOPODIDAE) FROM SAKHALIN ISLAND. Far Eastern Entomologist 409: 21-25, DOI: 10.25221/fee.409.3, URL: http://dx.doi.org/10.25221/fee.409.3
281887C78D041250E3BBFE73320CFBB5.taxon	etymology	ETYMOLOGY. The species is named for the curved segments of the fore tarsus. NOTES. New species is similar to Rh. firsovi Stackelberg et Negrobov, 1976, known from Primorsky Krai (Russia) and Alaska (USA), but differs from the latter in morphology of apical segments of the fore tarsi, by color of the fore femur, and by morphology of hypopygium. In Rh. firsovi, fore femur yellow; 4 th tarsomere of fore tarsus not widened, 5 th tarsomere without group of long setae; surstyli straight (see Negrobov, 1979: figs 1761 – 1764), while in Rh. curvitarsus sp. n., fore femur mostly dark, 4 th tarsomere of fore tarsus widened, 5 th tarsomere with a group of long setae (Fig. 2), and surstyli as in Fig. 3. lateral view; 3 – surstyli, ventral view; 4 – hypopygium, lateral view; 5 – hypopygium, ventral view.	en	Negrobov, O. P., Maslova, O. O., Selivanova, O. V. (2020): A NEW SPECIES OF THE GENUS RHAPHIUM (DIPTERA: DOLICHOPODIDAE) FROM SAKHALIN ISLAND. Far Eastern Entomologist 409: 21-25, DOI: 10.25221/fee.409.3, URL: http://dx.doi.org/10.25221/fee.409.3
