Psectrotanypus lateralis, Cheng, Ming & Wang, Xinhua, 2006

Cheng, Ming & Wang, Xinhua, 2006, Psectrotanypus Kieffer (Diptera: Chironomidae: Tanypodinae) from China, Zootaxa 1128, pp. 49-56 : 50-52

Psectrotanypus lateralis sp. n.

( Figs.1–6 )

Type material. Holotype male (BDN No.07544), CHINA: Yunnan Province, Wuding County, Shizishan Mountain, 11.VIII.1986, light trap, X. H. Wang.

Etymology. The species name lateralis , is from Latin, meaning lateral, referring to the pigment on the abdomen.

Diagnostic characters. The species differs from other known species of the genus by the banded abdomen, the characteristic wing markings with two distinct pigmented areas (one around crossvein r­m and one around fCu), some slightly darkened areas on cell m3+4, r2+3 and r4+5, and the low AR (about 1.7).

Male imago (n = 1)

Total length 5.88 mm. Wing length 3.35 mm. Total length/wing length 1.75. Wing length/length of profemur 2.13.

Coloration. Head brown. Thorax pale brown, vittae not distinct. Tergites I–V yellow, each with rounded bright brown area in middle and 2 distinct lateral brown bands; tergites VI–VII bright brown each with 2 distinct lateral brown bands; tergites VIII–IX brown; hypopygium brown ( Fig. 1 )

Head. AR 1.68. Temporal setae 26, including 22 verticals and 4 postorbitals. Clypeus with 11 setae. Tentorium 230 µm long, 95 µm wide. Length of palpomere 1–5 (µm): 75, 125, 220, 295, 430.

Thorax. Antepronotal setae 30. Dorsocentrals 41, acrostichals 39, prealars 38, scutellars 23, preepisternals 9, postnotals 2.

Legs. Spur on fore tibiae 85 µm long with 14 lateral teeth; apex of fore tibiae with 4 long bristles ( Fig. 3 ). Spur on mid tibiae 83 and 88 µm long with 14 and 16 lateral teeth ( Fig. 4 ). Spur on hind tibiae 75 and 100 µm long with 16 and 14 lateral teeth; tibial comb on hind leg of 11 setae ( Fig. 5 ). Length (µm) and proportions of legs as in Table 1 .

Hypopygium ( Fig. 6 ). Gonocoxite 285 µm long. Gonostylus 2085 µm long. HR 1.39. HV 2.87.

Female, pupa, and larva unknown.

Distribution: The species was found in the Yunnan Province of Oriental China.

Figures

FIGURES 1 – 6. Psectrotanypus lateralis sp. n., male. 1, abdomen. 2, wing. 3, tibial spur on fore leg. 4, tibial spurs on mid leg. 5, tibial spurs and tibial comb on hind leg. 6, hypopygium; dorsal view on left, ventral view on right.