Asyndetus lii Wang et Yang

Wang, Mengqing & Yang, Ding, 2005, Xinjiang, with a key to Central Asian species, Zootaxa 892, pp. 1-8 : 3-4

Asyndetus lii Wang et Yang , sp. nov.

( Figs. 1–3 )

Diagnosis. First flagellomere as long as wide. Fore and mid femora each with 2 rows of v; hind femur with 2 rows of long v.

Description. Male. Body length 2.4–2.7 mm, wing length 2.1–2.3 mm.

Head metallic green with pale gray pollen, frons wide, shining metallic green, face wide, about 1.5 times wider than first flagellomere. Hairs and bristles black; ocellar tubercle distinct with 2 strong oc and 2 posterior hairs; lower postocular bristles (including postero­ventral hairs) pale. Antenna black ( Fig. 2 ); first flagellomere about as long as wide with acute apex, brownish; arista dorsal, brownish, short pubescent, with basal segment rather short. Proboscis dark brown with pale hairs; palpus pale with black hairs and 2 black apical bristles.

Thorax dark metallic green with pale gray pollen. Hairs and bristles on thorax black; 5 strong dc, 6–7 paired acr short and hair­like; scutellum with 2 pairs of bristles (apical pair thick and long, basal pair rather short and hair­like). Propleuron with 1 black bristle on lower portion. Legs dark brown; each femur with yellow apex, fore tibia yellow, mid and hind tibiae yellow with brownish apex; fore tarsus dark yellow to brown from base of tarsomere 1 onward, mid and hind tarsi brown. Hairs and bristles on legs black; fore coxa with 4–6 black anterior and apical bristles; mid coxa with 3–4 apical bristles; hind coxa with 1 outer bristle at basal 1/5. Fore and mid femora each with 2 rows of v; hind femur with 1 row of long strong av and 1 row of longer pv. Fore tibia with 1 ad at basal 1/4, apically with 4 bristles; mid tibia with 2 ad and 2 pd, apically with 4 bristles; hind tibia with 3 ad and 6–7 pd, apically with 4 bristles. Fore and mid legs each without claws, hind leg with small claws; elongated pulvilli of fore leg about as long as tarsomere 5, elongated pulvilli of mid and hind legs shorter than tarsomere 5. Relative lengths of tibia and 5 tarsomeres LI 3.9: 2.0: 0.9: 0.7: 0.5: 0.6; LII 4.6: 2.4: 1.1: 0.7: 0.4: 0.5; LIII 5.1: 1.6: 1.3: 0.9: 0.6: 0.6.

Wing hyaline ( Fig. 1 ); veins brown, R4+5 and M divergent apically. CuAx ratio 0.10. Squama pale yellow with pale hairs. Halter pale yellow.

Abdomen dark metallic green with pale gray pollen. Hairs and bristles on abdomen black. Terga 1–5 with row of posterior bristles; sternum 8 with 4 strong bristles.

Male genitalia ( Fig. 3 ). Lateral lobe on epandrium large with obtuse apex, a little shorter than surstylus, with 2 apical bristles; surstylus thick and apex obtuse, curved inward apically, with 1 short bristle at tip and 1 long bristle at middle, basally with 1 short and curved process; cercus nearly semicircular with moderately long bristles; aedeagus slender.

Female. Body length 2.5–2.8mm, wing length 2.2–2.3mm. Similar to male, but hind femur just with 2 rows of short v.

Type material. Holotype male, XINJIANG: Yanqi (950–1170 m), 5. VIII. 1958, Ch. Li (CAU). Paratypes 3 males and 2 females, XINJIANG: Yanqi (950–1170 m), 5­26. VIII. 1958, Ch. Li (CAU).

Etymology. The specific epithet derives from the collector Changqing Li (Beijing).

Comments. The new species is similar to Asyndetus albipalpus Loew from Mongolia, but may be separated from the latter by the first flagellomere as long as wide with the acute apex, and the fore and mid femora each with 2 rows of v. In A. albipalpus , the first flagellomere is wider than long with the obtuse apex, and the fore and mid femora have no rows of v ( Negrobov, 1973).

Figures

FIGURES 1 – 3. Asyndetus lii Wang et Yang, sp. nov. (male). 1. wing, dorsal view; 2. antenna, lateral view; 3. genitalia, lateral view.