Polypedilum (Uresipedilum) Oyewo and Saether from China (Diptera: Chironomidae)
Author
Zhang, Ruilei
Author
Wang, Xinhua
text
Zootaxa
2004
2004-07-14
565
1
1
38
https://biotaxa.org/Zootaxa/article/view/zootaxa.565.1.1
journal article
4804
10.11646/zootaxa.565.1.1
d3a29685-2703-4df5-9f16-2766bb5dd803
11755334
5030339
Polypedilum
(
Uresipedilum
)
xuei
sp. n.
(
Fig. 14
)
Type material:
Holotype
male (
BDN
No. 22000):
CHINA
:
Xizang
Autonomous Region
(
Tibet
),
Motuo County
,
1100m
,
14. VIII. 2003
,
H. Xue.
Malaise Trap
.
Etymology:
Named in honor of Mr. H. Xue who collected the
type
material.
Diagnostic characters:
The species is easily distinguished from others within the subgenus by the long, slender anal point and long apicomedial projection.
FIGURE 14.
Polypedilum
(
Uresipedilum
)
xuei
sp. n.
A. Fore tibia scale. B. Superior volsella. C. Dorsal view of hypopygium. D. Ventral view of hypopygium.
Male imago
(n = 1)
Total length 2.05 mm. Wing length 1.24 mm. Total length/ wing length 1.65. Wing length /length of profemur 1.97.
Coloration
. Body entirely pale yellow to yellow.
Head
. Antennae damaged. Temporal setae 9; including 3 inner verticals; 3 outer verticals and 3 postorbitals. Clypeus with 9 setae.
Wing
. VR 1.23. Brachiolum with 1 seta, R with 10; R
1
with 5; R
4+5
with 9. Squama with 3 setae.
Thorax
. Dorsocentrals 9; acrostichals 8, biserial; prealars 3. Scutellum with 4 setae.
Legs
. Terminal scale (
Fig. 14A
) of front tibia
31 m
long with a small spine, anterior tarsi missing; spur on median tibiae
47 µm
long including
21 m
long comb, unspurred comb
18 m
long, spur on posterior tibia
47 m
long including
23 m
long comb, unspurred comb
28 m
long. Width at apex of front tibia
31 m
, of middle tibia
34 m
, of hind tibia
39 m
.
Lengths (in m) and proportions of legs (
Table 14
):
TABLE 14.
Polypedilum
(
Uresipedilum
)
xuei
sp. n.
Lengths of legs (in m).
fe |
ti |
ta1 |
ta2 |
ta3 |
ta4 |
ta5 |
LR |
p1 |
630 |
399 |
p2 |
662 |
557 |
281 |
159 |
133 |
85 |
64 |
0.50 |
p3 |
725 |
588 |
410 |
231 |
210 |
138 |
80 |
0.7 |
Hypopygium
(
Figs. 14B–D
). Anal tergite bands weak, not fused basal to median anal tergite setae. Anal tergite with 4 median setae, laterosternite with 4 setae. Anal point
45 m
long slender, tapering to parallelsided. Phallapodeme
45 µm
long; transverse sternapodeme
34 m
long. Gonocoxite
108 m
long. Base of superior volsella pubescent with 1 inner seta and 1 apical seta; apicomedial projection slender and long. Inferior volsella
75 m
long parallelsided with 7 oral setae and a long prominent apical seta. Gonostylus
107 m
long. HR 0.90. HV 1.71.
Distribution:
The species was collected by Malaise trap in South
Tibet
(Oriental
China
).
Remarks
: The species is morphologically close to
P
.
(
U
.)
harrisi
Freeman
from Africa.
P
.
(
U
.)
harrisi
is a brown species while the present species is yellow. The inner seta of the superior volsella is placed on an apicomedial projection in
P
.
(
U
.)
harrisi
according to
Freeman (1959)
, but is situated on the base in the new species. The anal point of the species does not extend beyond the apex of the inferior volsella according to
Freeman (1959)
, extending much beyond in the present new species.