Hemipenthes hebeiensis, 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 : 11-13

Hemipenthes hebeiensis sp. nov.

( Figs. 5 , 35–40 )

Diagnosis. Cell r2+3 without apical spot; hyaline apical part of cell cu-a1 very small, subtriangular, 1/5 as long as infuscate part. Abdominal dorsum with long dense black hairs laterally except tergites 1, 4, and 7 with yellowish hairs. Epiphallus distinctly constricted near base, with a clear W-shaped line apically, distiphallus subtriangular in dorsal view.

Description. Male. Body length 12–13 mm, wing length 13–17 mm.

Head black; ocellar tubercle black. Hairs on head black or yellow; hairs on frons mostly black; face with dense black and yellow hairs; occiput with sparse black and yellow hairs, and a row of erect yellowish brown hairs on the edge; ocellar tubercle with five long black hairs. Antenna black; scape long cylindrical, three times longer than wide, with rows of long black hairs on both sides; pedicel nearly as long as wide, with black hairs; first flagellomere onion-shaped, brown, bare. Antennal ratio: 3:1:5. Proboscis brown with yellow and black hairs; palpus dark brown with black hairs.

Thorax black with brown pollen. Hairs on thorax mostly yellowish, bristles on thorax black; postpronotal lobe with black and yellow long hairs, mesonotum with row of dark yellow long hairs at anterior margin and four long black lateral bristles near base of wing; laterotergite with a pile of yellow hairs; postalar callus with four yellow bristles. Scutellum with black sparse long hairs. Legs black. Hairs on legs mostly black, bristles black. Femora with long black hairs; tibiae with bristle-like hairs and some short yellow hairs; tarsi with short bristle-like hairs. Mid femur with three av apically; hind femur with five av apically. Mid tibia with nine ad, 10 pd, seven av and eight pv; hind tibia with 23 ad, 13 pd, 12 av and 15 pv. Femora and tibiae of mid and hind with yellow scales. Wing ( Figs. 5 ) half infuscate, partly hyaline; hyaline part including entire cell r4, most part of cells r5, r2+3, m1, m2, dm, and cu-a1, and little part of cells cup, a and r1; hyaline part of cell r1 subquadrate; hyaline apical part of cell a very small, subtriangular. Halteres brownish yellow; knob pale.

Abdomen black. Hairs on abdomen yellowish and black; dorsum with long dense black hairs laterally except tergites 1, 4, and 7 with yellowish hairs; dorsum with black hairs, tergites 1 and 4 with yellowish hairs; tergites 9–10 with black hairs. Sternites with yellow recumbent hairs and black erect hairs.

Male genitalia ( Figs. 35–40 ). Epandrium subquadrate, a little longer than high, and with distinct lateral extension at base in lateral view, epandrium almost as wide as high in posterior view; gonocoxa slightly narrow apically, with a narrow middle incision apically and apicolateral lobes somewhat acute apically in ventral view; gonostylus with a basal process, its acute tip strongly curved in lateral view; epiphallus distinctly constricted near base, with a clear W-shaped line apically, distiphallus subtriangular in dorsal view, distiphallus narrowing apically and with an acute tip.

Female. Body length 13 mm, wing length 13 mm. Similar to male, but wing infuscate part of cells m1 and m2 larger, abdominal tergite 6 with yellowish hairs.

Type material. Holotype male, CHINA: Hebei, Yangjiaping, 13. VIII. 2007, Gang Yao. Paratypes 6 males, 1 female, same as holotype.

Distribution. China (Hebei).

Etymology. The species is named after the type locality Hebei.

Remarks. The new species is similar to H. tusheticus (Zaitzev) , but it can be separated from the latter by the hyaline apical part of cell cu-a1 smaller, subtriangular, 1/5 as long as the infuscate part, and the epiphallus distinctly constricted near base, and the distiphallus subtriangular in dorsal view. In H. tusheticus , the hyaline apical part of cell cu-a1 is larger, nearly 1/3 as long as the infuscate part, the epiphallus is slightly tumid at middle, and the distiphallus is subquadrate ( Zaitzev, 1966).

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 35 – 40. Hemipenthes hebeiensis sp. nov. male genitalia. 35. epandrium and cercus, lateral view; 36. phallus, dorsal view; 37. phallus, lateral view; 38. epandrium and cercus, posterior view; 39. gonocoxa and gonostylus, ventral view; 40. gonocoxa and gonostylus, lateral view.