Natarsia qinlingica, Cheng, Ming & Wang, Xinhua, 2006

Cheng, Ming & Wang, Xinhua, 2006, Natarsia Fittkau (Diptera: Chironomidae: Tanypodinae) from China, Zootaxa 1111, pp. 59-67 : 63-64

Natarsia qinlingica sp. n.

(Figs.7–12)

Type material. Holotype male (BDN No.04252), CHINA: Shaanxi Province, Fengxian County, Qinling, 30 vii 1994, sweep net, W. J. Bu. Paratypes: 4 males (BDN No. 0 4227, 0 4228, 0 4238, 04240), same data as for holotype.

Etymology. This species is named after the type locality.

Diagnostic characters. The species differs from other members of the genus except N. tokunagai (Fittkau) by having a banded abdomen and a dark spot surrounding crossvein r­m, but it has a conical anal point that is lacking in N. tokunagai .

Male imago (n = 5)

Total length 3.60–4.25, 3.87 mm. Wing length 2.28–2.48, 2.38 mm. Total length/wing length 1.53–1.77, 1.63. Wing length/length of profemur 2.07–2.36, 2.17.

Coloration. Head brown. Antenna brown. Thorax pale brown, vittae not distinct. Ground color of abdomen pale yellow. Tergites II–V each with a roughly triangular brown area along anterior margin; tergites VI–VIII each with rounded brown area at anterior margin. Hypopygium brown (Fig. 7). Legs brown, apices of all femora with dark brown ring.

Head. AR 1.65–1.93, 1.75. Temporal setae 19; including 16 verticals and 3 postorbitals. Clypeus with 8–13, 11 setae. Tentorium 150–170, 164 µm long; 60–75, 65 µm wide. Palpomere 1–5 lengths (µm): 50–60, 55; 70–90, 77; 120–130, 124; 150–180, 168; 175–275, 239.

Wing (Fig. 8). Conspicuous dark brown rounded marking surrounding crossvein r­m. VR 0.85–0.93, 0.90. Brachiolum with 3 long setae. Squama with 38–42, 40 setae. C extension 100–125, 115 µm.

Thorax. Antepronotal setae 8–9, 8. Dorsocentrals 31–38, 35; acrostichals 22–30, 27; prealars 42–80, 65; scutellars 8–16, 11; preepisternals 3–5, 4; anepisternals 3–5, 4; postnotals 2–4, 3.

Legs. Spur on fore tibiae 53–60, 56 µm long with 6 lateral teeth; apex of fore tibiae with light comb of 10 bristles (Fig. 9). Spur on mid tibiae 58–63, 60 and 75–88, 79 µm long with 8 and 9 lateral teeth respectively (Fig. 10). Spur on hind tibiae 55–65, 59 and 75–90, 83 µm long with 8 and 9 lateral teeth respectively; tibial comb on hind leg of 10 setae (Fig. 11). Length (µm) and proportions of legs (hind tarsi of specimen No. 0 4238 were lost) as in Table 2 .

Hypopygium (Fig. 12). Gonocoxite 198–213, 206 µm long. Gonostylus 140–160, 149µm long. HR 1.23–1.52, 1.38. HV 2.34–2.93, 2.60.

Female, pupa, and larva unknown.

Distribution: The species was found in a northwestern Chinese province (Shaanxi Province, Fengxian County) of Palaearctic China.

Tables

TABLE 2. Lengths (µm) and proportions of legs of N. qinlingica sp. n.

	fe	ti	ta1	ta2	ta3	ta4	ta5	LR
p1	1050–1150, 1100	1325–1425, 1375	1000–1125, 1065	440–510, 476	310–350, 328	190–230, 210	140–150, 144	0.75–0.80, 0.77
p2	1275–1325, 1300	1250–1300, 1270	740–790, 762	350–400, 362	230–270, 252	150–160, 156	120–130, 126	0.58–0.63, 0.60
p3	1075–1150, 1110	1375–1425, 1405	1050–1100, 1075	490–520, 508	330–360, 345	220–240, 233	150–160, 155	0.75–0.77, 0.76