Sciapodinae from the Himalayan region with description of nine new species from Tibet (Diptera: Dolichopodidae)
Author
Tang, Chufei
Author
Zhu, Yajun
Author
Yang, Ding
text
Zootaxa
2019
2019-04-04
4577
1
1
28
journal article
27403
10.11646/zootaxa.4577.1.1
d8261df6-dba5-4c69-afca-83b9b4db13c8
1175-5326
2628496
69A7BB4B-00BB-4558-A63C-948B49FD339D
Genus
Sciapus
Zeller, 1842
Sciapus
has a quite restrictive distribution. Most
Sciapus
are primarily distributed in the Palearctic and Nearctic regions. As well, there is a record of
Sciapus
in the Oriental realm,
Sciapus arctus
Becker, 1922
from
Taiwan
(
China
). As its
holotype
is lost, there is no way to track its detailed features. However Becker’s figure of the postabdomen (
Becker 1922, fig. 170
) indicates it has a simple and digitiform cercus, which is similar to the new species we describe below. The new species is the only
Sciapus
distributed in the Himalayan region.
Species of this genus can be distinguished by the following features: Head: vertex shallowly excavated, with strong postvertical bristles. Scape usually prolonged; arista-like stylus dorsal, nearly as long as head width. Thorax usually with dense pollinosity; with biseriate acr and 5–7 pairs of strong dc; with 2 pairs of sc, of which basal pair weak and hair-like. Legs: Hind femur with distinct anterior preapical bristle. Tarsi variously unornamented. Wing hyaline, crossvein dm-cu straight. Abdomen elongated, phallus and hypandrium arising from epandrial base, arching beyond epandrium, with distinct dorsal angle; epandrial lobe and surstylus often greatly elongated (
Bickel 1994
;
Yang
et al
. 2011
).