Psectrotanypus Kieffer (Diptera: Chironomidae: Tanypodinae) from ChinaAuthorCheng, MingAuthorWang, XinhuatextZootaxa200611284956journal article5073410.5281/zenodo.171841bc788c51-49fa-45ce-9d2b-16436d9741e211755326171841Psectrotanypus lateralissp. 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.
FIGURES 1–6.Psectrotanypus lateralissp. 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.
Wing (Fig. 2). Distinct pigmented
areas around crossveins rm and fCu;
slightly
darkened areas in cell m3+4, r2+3 and r4+5.
VR 0.89. Brachiolum with 3 long setae.
Squama
with 28 setae. C extension 100 µm long.
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
.