Denopelopia Roback & Rutter from China with emendation of the generic diagnosis (Diptera: Chironomidae: Tanypodinae)
Author
Cheng, Ming
Author
Wang, Xinhua
text
Zootaxa
2005
1042
55
63
journal article
50959
10.5281/zenodo.169835
d5deb5c1-023d-444a-80ec-6fe2e7042703
11755326
169835
Denopelopia bractea
sp. n.
(
Figs. 1–5
)
Type
material.
Holotype
male (BDN No.1455),
CHINA
: Guangdong Province, Fengkai County, Heishiding Natural Conversation,
20. IV. 1988
, light trap, X. H. Wang.
Paratypes
:
1 male
(BDN No. 03406), Gansu Province, Tianshui City, Dangchuan Town,
1450 m
,
8. VIII. 1993
, light trap, W. J. Bu.
1 male
(BDN No.1602),
CHINA
: Guangxi Autonomous Region, Longsheng County, Sanmen Town,
27. V. 1990
, light trap, X. H. Wang.
1 male
(BDN No.1591), Guangxi Autonomous Region, Jinxiu County, Luoxiang Town, Daleng village,
7. VI. 1990
, sweep net X. H. Wang.
1 male
(BDN No.08119), Xizang Autonomous Region, Zayü County,
27. VI. 1988
, light trap, C. Y. Deng.
Etymology
. The species name is from the Latin
bractea
, scale, referring to the tibiae of the front legs with two large scalelike setae.
Male imago
(
n
= 5)
Dimensions
. Total length 2.23–2.80,
2.56 mm
. Wing length 1.42–1.90,
1.65 mm
. Total length/wing length 1.45–1.70, 1.55.
Coloration.
Head brown. Antenna brown. Thorax dark brown with darker vittae. Abdomen brown. Hypopygium dark brown. Wing without makings.
Head.
AR 0.74–1.16, 0.99. Temporal setae uniserial 10–14, 12; including 8–12, 11 verticals and 1–2, 2 postorbitals. Clypeus with 14–26, 19 setae. Palpomere 1–5 lengths (µm): 25–35, 30; 40–78, 57; 115–198, 156; 125–185, 160; 213–310, 264.
Wing
(
Fig. 1
). VR 0.88–0.97, 0.93. Brachiolum with 3–7, 5 long setae. Squama with 9–12, 12 setae. Anal lobe obtuse.
Thorax.
Antepronotal setae 2–3, 2. Dorsocentrals 13–23, 18; acrostichals 13–26, 21; prealars 5–8, 6; Scutellars 9–13, 11.
Legs.
Spur on fore tibia 23–30, 28 µm long with 3 lateral teeth. Spurs on mid tibia 23–30, 28 µm and 28–43, 36 µm long, with 3 lateral teeth (
Fig. 2
). Spurs on hind tibia 18–35, 28 µm and 33–55, 45 µm long, with 3 lateral teeth. Tibiae of front legs with 2 large apical spatulate scalelike setae (
Fig. 3
). Tibial comb on hind leg of 7 setae (
Fig. 4
). Length (µm) and proportions of legs as in
Table 1
. (The fore and mid tarsi of specimen No. 0 8119, mid and hind tarsi of specimen No. 1591, fore tarsi of specimen No. 0 3406, and mid tarsi of specimen No. 1602 are lost).
FIGURES 1–5.
Denopelopia bractea
sp. n.
male imago.
1,
wing.
2,
both semilyrate tibial spurs on mid leg.
3,
scalelike setae and short spur on fore tibia.
4,
tibial spurs and tibial comb on hind leg.
5,
hypopygium.
TABLE 1.
Lengths (µm) and proportions of legs of
D. bractea
sp. n.
| fe |
ti |
ta1 |
ta2 |
ta3 |
ta4 |
ta5 |
LR |
| p1 |
570–710, 640 |
640–1010, 818 |
450–660, 530 |
275–340, 317 |
200–280, 231 |
120–210, 167 |
80–100, 93 |
0.63–0.80, 0.73 |
| p2 |
550–820, 692 |
520–825, 673 |
440–610 |
200–275 |
110–170 |
90–115 |
70–75 |
0.74–0.74 |
| p3 |
490–730, 616 |
790–1250, 978 |
555–820, 706 |
290–410, 353 |
210–310, 263 |
135–230, 179 |
85–110, 96 |
0.62–0.82, 0.73 |
Hypopygium
(
Fig. 5
). Tergite IX with a row of 8–10, 10 setae. Anterior end of sternapodeme with transverse connection 8–23, 13 µm long. Gonocoxite 125–205, 153 µm long. Length of gonocoxite/width of gonocoxite 1.77–1.98 1.85. Gonostylus 83–125, 102 µm long, slender, and slightly curved. HR 1.45–1.54, 1.50. HV 2.24–2.66, 2.5.
Female, pupa, and larva.
Unknown.
Distribution.
The species has been found in both Oriental (Guangdong Province, Guangxi Province, and Xizang Autonomous Region) and Palaearctic (Gansu Province)
China
.
Diagnosis.
This new species can be separated from other known species of the genus by having two large spatulate, scalelike setae on the apex of the fore tibiae (
Fig. 3
).