Heleodromia (Heleodromia) ausobskyi Wagner

Wang, Junchao, Wang, Mengqing & Yang, Ding, 2013, Heleodromia Haliday newly found in Tibet with description of one new species (Diptera: Empidoidea: Trichopezinae), Zootaxa 3746 (3), pp. 489-494 : 490

Heleodromia (Heleodromia) ausobskyi Wagner

( Figs 1–2 )

Heleodromia ausobskyi Wagner, 1983: 333 . Type-locality: Nepal: Ilam.

Diagnosis. Antenna blackish except scape and pedicel dark brownish yellow. Legs mostly dark brownish yellow; fore coxa brownish yellow, mid and hind coxae dark brown. All femora with distinct av basally; fore femur with 3 av (outermost av longest). Tergite 8 with distinct mid-posterior process finger-like in lateral view. Epandrial lobe bearing short wide anterior process with 4 long bristles and short finger-like posterior process with 1 long bristle at tip; surstylus rather large, apically wide with 3 long bristles and 1 long finger-like denticle.

Re-description. Male. Body length 2.1–2.4 mm, wing length 2.7–2.9 mm.

Head black with pale gray pollen. Eyes very narrowly separated on face, dark brownish yellow. Setae and setulae on head black except posteroventral surface with few pale setulae; ocellar tubercle distinct with pair of long oc. Antenna blackish except scape and pedicel dark brownish yellow; first flagellomere long conical, 1.6–1.7X longer than wide; arista very long, 1.8–1.9X length of flagellomere; pedicel with circle of subapical hairs, first flagellomere and arista very short micropubescent. Proboscis long, 0.8X as long as head height, brown with blackish setulae. Palpus blackish with blackish setulae and 4 long blackish apical setae.

Thorax black with pale gray pollen. Setae and setulae on thorax black; pronotum with 1 seta laterally; 1 h, 1 npl, 2 short acr, 4 dc, 1 psa; scutellum with 2 setae. Legs dark brownish yellow except fore coxa brownish yellow, mid and hind coxae dark brown; fore tibia and tarsus brown, mid and hind tarsi from tip of tarsomere 1 brown onward. Setulae and setae on legs black except those on coxae blackish and dark yellow; all femora with distinct av setae, fore femur basally with row of 3 av setae (outermost seta longest, nearly as long as femur thickness). Fore femur 1.15X as thick as mid femur, mid femur 1.1X as thick as hind femur. Wing hyaline, slightly tinged grayish; veins dark brown. Squama dark yellow, bordered with pale setulae. Halter dark brown.

Abdomen blackish with pale gray pollen; hypopygium dark brownish yellow except base blackish. Setulae and setae on abdomen black. Male genitalia ( Figs 1–2 ): tergite 8 and sternite 8 rather small; tergite 8 with distinct midposterior process finger-like in lateral view; epandrium and hypandrium much elongated and rather large; epandrium slightly shorter than hypandrium in lateral view; epandrial lobe bearing short wide anterior process with 4 long bristles and short finger-like posterior process with 1 long bristle at tip; surstylus rather long, apically wide with 3 long bristles and 1 long finger-like denticle.

Female. Body length 2.0– 2.45 mm, wing length 2.6–3.0 mm. Similar to male, but all femora without distinct av.

Material examined. CHINA. Tibet: 1 ♂, Linzhi, Sejilashankouxi (N29°33′65′′, E94°33′81′′), 3789 m, 2012. VIII.15–18 (Malaise trap, Zeqing Niu, Huanxi Cao & Qingtao Wu, leg.); 4 ♂ 5 ♀, Linzhi (N29°38′ 18″ E94°21′ 46″), 2012. IX.2–12 (Malaise trap, Zeqing Niu, Huanxi Cao & Qingtao Wu, leg.).

Distribution. China (Tibet), Nepal.

Figures

FIGURES 1 – 2. Heleodromia (Heleodromia) ausobskyi Wagner (male). 1. Tergite 8, dorsal view. 2. Genitalia, lateral view. Scale bar 0.1 mm.