Hemipenthes yunnanensis, Yao & Yang, 2008

Yao, Gang & Yang, Ding, 2008, Two new species of Hemipenthes Loew from Oriental China (Diptera: Bombyliidae), Zootaxa 1689 (1), pp. 63-68 : 64-65

Hemipenthes yunnanensis sp. nov.

( Figs. 1–6 )

Diagnosis. Cell R 2+3 with an apical spot; hyaline apical part of cell cu-a 1 very small, subtriangular, 1/4 as long as infuscate part. Abdominal dorsum (except tergites 4–6) with long dense white setae laterally. Phallus nearly quadrate and parallel-sided in dorsal view.

Description. Male. Body length 10 mm, wing length 9 mm.

Head black with gray pollen; ocellar tubercle reddish brown. Setae on head black or yellow; frons with long black setae; face with dense setae; occiput with sparse black and yellow setae, single row of erect yellowish-brown setae on the edge; ocellar tubercle with seven long, black setae. Antenna yellowish-brown; scape long and cylindrical, three times longer than wide, with rows of long, black setae on both sides; pedicel nearly as long as wide, with sparse black setae; first flagellomere onion-shaped, brownish, bare. Antennal ratio: 4:2:5. Proboscis dark brown with yellow and black setae; palpus dark brown with black setae.

Thorax black with gray pollen, except mesonotum and scutellum with brown pollen. Vestiture (including bristles) on thorax black; postpronotal lobe with long, black setae, mesonotum with row of long, dark yellow setae along anterior margin and three long, black lateral bristles near base of wing; laterotergite with a pile of white setae. Scutellum with yellow or black sparse long setae. Legs black, except mid and hind femora and tibiae dark yellow. Vestiture on legs mostly black, bristles black. Femora with long, black setae; tibiae with bristle-like setae and some short yellow setae; tarsi with some short yellow setae. Mid femur with three av apically; hind femur with three av apically. Mid tibia with six ad, seven pd, six av and five pv; hind tibia with 10 ad, 10 pd, four av and 11 pv. Mid and hind tibiae with yellow scales. Wing ( Fig. 1 ) mostly infuscate; hyaline part including entire cells r 4 and m 1, most part of cells r 5, r 2+3, and m 2, and little part of cells cu-a 1, dm, and r 1; hyaline part of cell r 1 subtriangular; cell r 2+3 with an apical spot; hyaline apical part of cell cu-a 1 very small, subtriangular, 1/4 as long as infuscate part. Haltere stem brownish-yellow, knob pale yellow.

Abdomen black with gray pollen. Setae on abdomen white and black; dorsum with long dense white setae laterally except tergites 4–6; dorsum with black recumbent setae, tergites 5–6 with a small mid-posterior area bare; tergites 9–10 with black setae. Sternites with yellow recumbent setae and erect black setae except sternites 1–2 with long white setae.

Male genitalia ( Figs. 2–6 ). Epandrium subquadrate, nearly as long as wide, and with distinct lateral extension at base in lateral view; gonocoxa with slightly narrow apical portion uniformly wide, with a rather narrow middle incision apically and apico-lateral lobes wide and obtuse apically in ventral view; gonostylus without basal process, its acute tip strongly curved in lateral view; phallus nearly quadrate and parallel-sided in dorsal view.

Female. Body length 10 mm, wing length 11 mm. Similar to male, but abdominal tergites with long dense black setae laterally and large mid-posterior area bare.

Type material. Holotype male, CHINA: Yunnan, Kunming , 29. VII. 2006, Wenliang Li . Paratype 1 female, CHINA: Guangxi, Ningming, 16. V. 2006, Kuiyan Zhang .

Distribution. China (Yunnan, Guangxi).

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

Remarks. The new species is similar to H. velutina (Wiedemann) , but it can be separated from the latter by the hyaline apical part of cell cua 1 very small, subtriangular, 1/4 as long as the infuscate part, and the phallus not narrowing apically. In H. velutina , the hyaline apical part of cell cua 1 is rather large, nearly as long as the infuscate part; the phallus is slightly narrowing apically ( Zaitzev, 1966).

Figures

FIGURES 1–6. Hemipenthes yunnanensis sp. nov. Male. 1. Wing; 2. epandrium and cercus, lateral view; 3. gonocoxa and gonostylus, ventral view; 4. gonocoxa and gonostylus, lateral view; 5. phallus, lateral view; 6. phallus, dorsal view.