Nine new species of the subgenus Stegana (Steganina) from China, with DNA barcoding information (Diptera: Drosophilidae)
Author
Li, Bingxue
Author
Zhang, Yuan
Author
Chen, Hongwei
text
Zootaxa
2019
2019-04-01
4576
1
81
108
journal article
27521
10.11646/zootaxa.4576.1.4
a169fa80-80f0-4792-8a01-69b3bac059db
1175-5326
2624686
A521DFD3-564F-4A15-8F59-9E946F169C4A
Stegana
(
Steganina
)
pinguifoliacea
sp. nov.
(
Figs 2D
,
7
)
Diagnosis.
This species resembles
S. longifibula
Takada,
1968
in some characters of the body colour patterns (
Fig. 2D
), but can be distinguished by the male terminalia, in this species, the surstylus without minute projections, except acute apically (
Fig. 7A
); aedeagus medially expanded in lateral view, strongly narrowed in ventrally (
Fig. 7B, C
); gonopods nearly vaulted in ventral view (
Fig. 7D
). The minimum interspecific genetic distance to
S. longifibula
is 4.3%, which is smaller than to other species (
Table 2
).
Description.
Male: Frons black. First flagellomere greish yellow. Clypeus and palpus yellow. Mesonotum brown to dark brown, with 1 thin, unconspicuous, yellow longitudinal stripe medially, yellowish brown laterally. Katepisternum entirely white. Scutellum black. Femur of foreleg with 4 long erect setae near distal part of posteroventral surface. Abdominal tergites nearly black. Male terminalia (
Fig. 7
): Epandrium slightly protruded ventrally, with ca. 15 setae on posterior portion per side. Surstylus with numerous setulae distally. Cercus lacking pubescence. Paramere with 2 setulae. Tenth sternite flat dorsolaterally.
Measurements.
BL =
3.01 mm
in
holotype
, ThL =
1.47 mm
, WL =
2.95 mm
, WW =
1.26 mm
, arb = 6/4, avd = 0.62, adf = 1.36, flw = 1.87, FW/HW = 0.41, ch/o = 0.22, prorb = 1.30, rcorb = 0.73, vb = 0.52, dc1 = damaged, presct1 = damaged, sct1 = damaged, sterno = damaged, orbito = 1.73, dcp = 0.35, sct1p = 1.68, C = 2.08, 4c = 1.02,
4v
= 1.55,
5x
= 1.26, ac = 9.25, M = 0.45, C3F = 0.65.
Specimens examined.
Holotype
♂
(
SCAU
, No.
110944
),
China
:
Pangquangou
,
Jiaocheng
,
Shanxi
,
37°04'47''N
,
111°30'20''E
, altitude
2200m
,
30.vii.2016
, tree trunk,
L Zhu.
Etymology.
A combination of the Latin words:
pinguis
and
foliaceous
, reference to the aedeagus medially expanded in lateral view.