Hemipenthes ningxiaensis, 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 : 17-19

Hemipenthes ningxiaensis sp. nov.

( Figs. 8 , 53–58 )

Diagnosis. Wing infuscate part at costal margin reaching curved tip of r2+3; cell r2+3 hyaline apically. Abdominal tergites 1, 4, 6, and 7 with yellow long hairs. Epiphallus narrowing at middle, with a clear middle straight line apically; distiphallus long, subtriangular, and with an acute tip in dorsal view.

Description. Male. Body length 11–12 mm, wing length 12–14 mm.

Head black; ocellar tubercle reddish brown. Hairs on head black or yellow; frons with black erect hairs and yellow recumbent hairs; face with dense hairs mostly black; occiput with black and yellow hairs, and a row of erect brown hairs on the edge; ocellar tubercle with five long black hairs. Antenna black except first flagellomere 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, brown, bare. Antennal ratio: 3:1:4. Proboscis dark brown with black hairs; palpus dark brown with black hairs.

Thorax black with gray pollen. Hairs on thorax mostly yellow, bristles black; postpronotal lobe with yellow and long black hairs, mesonotum with yellow and long black dense hairs laterally and with row of yellow long hairs at anterior margin and three long black lateral bristles near base of wing, postalar callus with three yellow bristles. Scutellum with black and yellow sparse hairs. Legs brown with yellow scales. Hairs on legs mostly black, bristles black. Femora with black and yellow long hairs; fore tibia with bristle-like hairs; tarsi with short black hairs. Mid femur with three av apically; hind femur with five av apically. Mid tibia with six ad, eight pd, seven av and eight pv; hind tibia with 12–15 ad, 12–16 pd, 10–13 av and 8–10 pv. Tibiae with yellow scales. Wing ( Fig. 8 ) half infuscate; infuscate part at costal margin reaching curved tip of r2+3; hyaline part including entire cell r4, almost of cell m1, most parts of cells r2+3, r5, dm, m2 and cu-a1, and little parts of cells r1 and cup; hyaline part of cell r1 nearly semicircular. Halteres blackish, except knob yellowish.

Abdomen black with brown pollen. Hairs on abdomen yellow and black; dorsum with long dense black hairs laterally except tergites 1, 4, 6, and 7 with yellow long hairs, tergites 1 and 6 with yellow recumbent hairs on posterior margin, tergites 9–10 with yellow hairs; all sternites with yellow recumbent hairs and black erect hairs.

Male genitalia ( Figs. 53–58 ). Epandrium subquadrate, distinctly longer than high, and with distinct lateral extension at base in lateral view, epandrium about twice higher than wide in posterior view, extended at middle and curved at apex; gonocoxa with slightly narrow apical portion uniformly wide, with a rather narrow middle incision apically in ventral view; gonostylus with a basal process, its acute tip indistinctly curved in lateral view; epiphallus narrowing at middle, with a clear middle straight line apically, distiphallus long, subtriangular, and with an acute tip in dorsal view, distiphallus long, slightly narrowing apically in lateral view.

Female. Unknown.

Type material. Holotype male, CHINA: Ningxia, Jingyuan, 29. VI. 2007, Gang Yao; Paratypes 2 males, CHINA: Ningxia, Loushan, 13. VII. 2007, Gang Yao. Distribution. China (Ningxia).

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

Remarks. The new species is similar to H. mesasiatica (Zaitzev) , but it can be separated from the latter by the hyaline part of cell cu-a1 smaller, the epiphallus narrowing medially with a clear middle straight line apically, and the distiphallus with an acute tip in dorsal view. In H. mesasiatica , the hyaline apical part of cell cu-a1 is rather large, more than half of the infuscate part; the epiphallus is slightly curved at middle with a clear almost straight line, and the distiphallus has an obtuse tip in dorsal view ( Zaitzev, 1962). The new species is also similar to the anterior H. beijingensis sp. nov., but it can be separated from the latter by the entire cell of m1 hyaline, and the distiphallus with an acute tip in the dorsal view. In H. beijingensis sp. nov. cell m1 with an infuscate spot apically, and the distiphallus with an obtuse tip in dorsal view.

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 53 – 58. Hemipenthes ningxiaensis sp. nov. male genitalia. 53. epandrium and cercus, lateral view; 54. phallus, dorsal view; 55. phallus, lateral view; 56. epandrium and cercus, posterior view; 57. gonocoxa and gonostylus, ventral view; 58. gonocoxa and gonostylus, lateral view.