Hemipenthes apiculata, Yao, Gang, Yang, Ding & Evenhuis, Neal L., 2008

Yao, Gang, Yang, Ding & Evenhuis, Neal L., 2008, Species of Hemipenthes Loew, 1869 from Palaearctic China (Diptera: Bombyliidae), Zootaxa 1870, pp. 1-23 : 4

Hemipenthes apiculata sp. nov.

( Figs. 1 , 11–16 )

Diagnosis. Body length only 7–10 mm. Cell r4 with a very small gray spot apically; hyaline part of cells cu-a1, cup, and a small; cell a very small subtriangular. Epandrium three times wider than high in posterior view; distiphallus rather narrow and long in lateral view.

Description. Male. Body length 7–10 mm, wing length 6–12 mm.

Head black with gray pollen; ocellar tubercle black. Hairs on head mostly black; frons with erect long black hairs; face with dense black hairs and sparse yellow hairs; occiput with sparse black hairs and a row of erect black hairs on the edge; ocellar tubercle with six long black hairs. Antenna black except first flagellomere brown; scape long cylindrical, two times longer than wide, with rows of long, black hairs on both sides; pedicel nearly as long as wide, with sparse black hairs; first flagellomere onion-shaped, bare. Antennal ratio: 3:2:9. Proboscis dark brown with black hairs; palpus brown with black hairs.

Thorax black with brown pollen. Hairs on thorax white, black, and yellow, bristles black; postpronotal lobe with black and yellow long hairs, mesonotum with row of yellow long hairs at anterior margin and three long black lateral bristles near base of wing, postalar callus with two black bristles. Scutellum with yellow or black sparse long hairs. Legs brown with yellow scales and gray pollen. Hairs on legs mostly black, bristles black. Femora with long black hairs; tibiae with some short yellow hairs; tarsi with some short black hairs. Mid femur with three av apically; hind femur with three av apically. Mid tibia with four ad, seven pd, five av and six pv; hind tibia with eight ad, six pd, seven av and six pv. Femora and tibiae with yellow scales except fore tibia. Wing ( Fig. 1 ) half infuscate; hyaline part including almost entire cell r4, most part of cells m1 and m2, part of cells r2+3, r5, dm, and cu-a1, and little part of cells r1, cup, and a; cell r4 with a very small gray spot apically, infuscate part of cell r5 reaching cell m1, hyaline part of cell r1 subquadrate. Halteres brown, except knob pale.

Abdomen black with brown pollen. Hairs on abdomen white, black and yellow; dorsum with long dense black hairs laterally except tergites 1, 4, and 7 with white hairs laterally; dorsum with black and recumbent hairs except tergites 1, 4, and 7 with white recumbent hairs, tergites 5–8 with a small mid-posterior area bare; tergites 9–10 with black hairs. Sternites with yellow recumbent hairs and erect black hairs.

Male genitalia ( Figs. 11–16 ). Epandrium subquadrate, three times longer than high, and with distinct lateral extension at base in lateral view, epandrium three times wider than high in posterior view; gonocoxa with more or less narrowing apical portion uniformly wide, and with a rather narrow middle incision apically and apico-lateral lobes somewhat acute apically in ventral view; gonostylus with a basal process, its acute tip strongly curved in lateral view; epiphallus slightly narrowed at middle, with an unclear line at middle beyond tip of distiphallus, distiphallus long in dorsal view, distiphallus rather narrow and long in lateral view.

Female. Body length 6–7 mm, wing length 7–9 mm. Similar to male, but wing infuscate part of cell m1 larger, and extending to cell m2, abdominal tergites with sparse hairs.

Type material. Holotype male, CHINA: Inner Mongolia, Azuoqi, 7. VII. 2007, Gang Yao; Paratypes 1 male, 2 females, CHINA: Ningxia, Tongxin, 13. VII. 2007, Gang Yao.

Distribution. China (Inner Mongolia).

Etymology. The species is named after the character of distiphallus narrow and long.

Remarks. The new species is similar to H. hamifera (Loew) , but it can be separated from the latter by the hyaline part of cells cu-a1, cup, and a smaller, cell a very small and subtriangular, and cell r4 with a very small gray spot apically; distiphallus rather narrow and long in lateral view. In H. hamifera , the hyaline part of cells cu-a1, cup, and a is rather large, and the hyaline part of cell a nearly as long as the infuscate part; the distiphallus is wider and shorter than that in H. apiculata ( Zaitzev, 1966) . The new species is also similar to H. nitidofasciata (Portschinsky) , but it can be separated from the latter by wing with infuscate in cell r5 not extended beyond m-m, the distiphallus distinctly long more than half the length of epiphallus in dorsal view. In H. nitidofasciata , wing with infuscate in cell r5 distinctly extended beyond m-m; the distiphallus less than half the length of epiphallus, also smaller and short than that in H. apiculata .

Figures

FIGURES 1 – 10. Hemipenthes wings. 1. Hemipenthes apiculata sp. nov.; 2. Hemipenthes beijingensis sp. nov.; 3. Hemipenthes cheni sp. nov.; 4. Hemipenthes hamifera Loew; 5. Hemipenthes hebeiensis sp. nov.; 6. Hemipenthes maura Linnaeus; 7. Hemipenthes neimengguensis sp. nov.; 8. Hemipenthes ningxiaensis sp. nov.; 9. Hemipenthes nitidofasciata Portschinsky; 10. Hemipenthes velutina Wiedemann.

FIGURES 11 – 16. Hemipenthes apiculata sp. nov. male genitalia. 11. phallus, lateral view; 12. phallus, dorsal view; 13. epandrium and cercus, posterior view; 14. gonocoxa and gonostylus, lateral view; 15. gonocoxa and gonostylus, ventral view; 16. epandrium and cercus, lateral view.