Natarsia Fittkau (Diptera: Chironomidae: Tanypodinae) from China
Author
Cheng, Ming
Author
Wang, Xinhua
text
Zootaxa
2006
1111
59
67
journal article
50814
10.5281/zenodo.171550
0fd0672b-c637-4608-9206-3152aca461bf
11755326
171550
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
.
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 |
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
.