Species of Hemipenthes Loew, 1869 from Palaearctic China (Diptera: Bombyliidae) Author Yao, Gang Author Yang, Ding Author Evenhuis, Neal L. text Zootaxa 2008 1870 1 23 journal article 10.5281/zenodo.183945 fe80cc20-9822-431f-8a92-e06dfd412724 1175-5326 183945 Hemipenthes cheni sp. nov. ( Figs. 3 , 23–28 ) Diagnosis. Cell r2+3 without an apical spot; entire cell of r4 hyaline. Abdominal dorsum (except tergites 1 and 4) with long dense black hairs laterally; sternite 1 with long white hairs. Epiphallus narrowing near base, apically with a clear curve line, distiphallus subtriangular in dorsal view. Description. Male. Body length 11 mm , wing length 12 mm . Head black with gray pollen except occiput with brown pollen; ocellar tubercle reddish. Hairs on head black or yellow; frons with long black hairs; face with yellow and dense black hairs; occiput with sparse black hairs and a row of erect brown hairs on the edge; ocellar tubercle with four black hairs. Antenna brown; scape long cylindrical, three 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, brownish, bare. Antennal ratio: 3:1:5. Proboscis dark brown with yellow hairs; palpus yellowish with long, blackish hairs. Thorax black with gray pollen except scutellum with brown pollen. Hairs on thorax mostly yellow and white; bristles on thorax black and yellow; postpronotal lobe with long white hairs, mesonotum with row of long yellow hairs along anterior margin and three long black lateral bristles near base of wing; laterotergite with a pile of yellow hairs. Scutellum with sparse long black hairs. Legs brown except tarsi black. Hairs on legs yellow and black, bristles black. Femora with long black hairs; tibiae with bristle-like hairs and some short yellow hairs; tarsi with some short yellow hairs. Mid femur with two av apically; hind femur with two av apically. Mid tibia with seven ad , seven pd , six av and eight pv ; hind tibia with 10 ad , nine pd , seven av and eight pv . Hind femur with yellow scales; mid and hind tibiae with yellow scales. Wing ( Fig. 3 ) half infuscate; hyaline part including entire cell r4 , most part of cells r2+3 , r5 , dm , cu-a1 , m1 and m2 , and little part of cells cup , a , and r1 ; hyaline part of cell r1 nearly semicircular; hyaline apical part of cell a small, subtriangular. Halteres brown; knob pale. Abdomen black with brown pollen. Hairs on abdomen white and black; dorsum with long dense black hairs laterally except tergites 1 and 4 with white hairs; dorsum with black recumbent hairs, tergites 2–6 with a small mid-posterior area bare; tergites 9–10 with black hairs. Sternites with yellow recumbent hairs and erect black hairs except sternite 1 with long white hairs. Male genitalia ( Figs. 23–28 ). Epandrium subquadrate, nearly as long as wide, and with distinct lateral extension at base in lateral view, epandrium slightly higher than long in posterior view; gonocoxite with slightly narrow apical portion, with a V-shaped middle incision apically in dorsal view and apicolateral lobes somewhat acute apically in ventral view; gonostylus with a basal process, its acute tip strongly curved in lateral view; epiphallus narrowing near base, with a clear curve line apically, distiphallus subtriangular in dorsal view, distiphallus with an acute tip in lateral view. Female. Body length 9 mm , wing length 9–11 mm . Similar to male, but cell r2+3 with a dark spot apically. Type material. Holotype male, CHINA : Inner Mongolia , Bayannaoer, 14. VII. 1978 , Heming Chen. Paratypes 2 females , CHINA : Inner Mongolia , Bayannaoer, 14. VII. 1978 , Heming Chen. Distribution. China (Inner Mongolia ). Etymology. The species is named after the name of collector Heming Chen. Remarks. The new species is similar to H. tushetica (Zaitzev) , but it can be separated from the latter by the entire cell of r4 hyaline and cell r2+3 without infuscate spot apically in male; the epiphallus narrowing near base, and the distiphallus subtriangular in dorsal view. In H. tushetica , cell of r2+3 has a dark spot apically, cell of r4 has a infuscate spot basally; the epiphallus is not narrowing, and the distiphallus is subquadrate in dorsal view ( Zaitzev, 1966 ).