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
)
stachydifolia
sp. nov.
(
Figs 2F
,
9
)
Diagnosis.
This species resembles
S. malanostoma
Chen & Chen, 2008
from
Hubei
,
China
in the colour patterns of body (
Fig. 2F
) and some characters of male terminalia (
Fig. 9
), but can be distinguished by the aedeagus with 1 pair of fringe-like processes ventrally (
Fig. 9C, D
); gonopods slightly protruded dorsomedially, with a few serrated, minute processes (
Fig. 9E, F
). The minimum interspecific genetic distance to
S. malanostoma
is 3.4%, which is smaller than to other species (
Table 2
).
Description.
Male: Frons black on upper half, with 1 yellow band medially, brown below. First flagellomere yellow on basal 2/3, black on distal 1/3. Clypeus black medially, yellow laterally. Palpus yellow, slightly brownish apically. Mesonotum brown medially, yellowish brown laterally (
Fig. 2F
). Katepisternum entirely white. Scutellum brown (
Fig. 2F
). Foreleg femur with 4 long suberect setae near distal part of posteroventral surface. Abdominal tergites entirely brown (
Fig. 2F
). Male terminalia (
Fig. 9
): Epandrium with ca. 24 setae on dorsal to posterolateral portion per side. Cercus lacking pubescence. Surstylus distally with numerous setulae on inner surface. Paramere with ca. 2 setulae. Aedeagus with numerous, thin setae along apical margin and serration processes on dorsal portion. Gonopods with 1 small projection distodorsally in lateral view.
Measurements.
BL =
2.80 mm
in
holotype
(
4♂
paratypes
: 2.47–2.67), ThL =
1.33 mm
(1.11–1.58), WL =
2.20 mm
(1.87–2.00), WW =
1.01 mm
(0.87–1.00), arb = 7/4 (7/4–8/4), avd = 0.75 (0.50–0.67), adf = 1.60 (1.43– 1.80), flw = 2.4 (1.57–2.20), FW/HW = 0.41 (0.40–0.44), ch/o = 0.10 (0.10–0.12), prorb = 0.94 (0.93–1.07), rcorb = 0.63 (0.71–0.79), vb = 0.30 (0.26–0.36), dcl = 0.48 (0.44–0.63), presctl = 0.40 (0.45–0.53), sctl = 1.60 (1.61– 1.75), sterno = 0.79 (0.75–0.83), orbito = 1.82 (1.50–1.80), dcp = 0.23 (0.22–0.24), sctlp = 2.5 (2.67–3.3), C = 2.06 (2.00–2.07), 4c = 0.89 (0.79–1.07),
4v
= 1.42 (1.21–1.79),
5x
= 1.16 (1.16–2.00), ac = 8.5 (7.5–8.5), M = 0.37 (0.41–0.43), C3F = 0.71 (0.66–0.84), A = 1.17(1.03–1.17), H = 0.17(0.17–0.22).
Specimens examined.
Holotype
♂
(
SCAU
, No.
121491
),
China
:
Yixiang
,
Pu'er
,
Yunnan
,
22°42'N
,
101°09'E
, altitude
1400m
,
2.x.2011
, tree trunk,
HW Chen
.
Paratypes
:
3♂
(
SCAU
, Nos
121492
–94),
13.v.2012
, same data as holotype
;
1♂
(
KIZ
, No. 0090662),
Guanlei
,
Mengla
,
Yunnan
,
21°37'39''N
,
101°9'55''E
, altitude
670m
,
14.ix.2012
, tussock,
JJ Gao
;
1♂
(
SCAU
, No. 124705),
Husa
,
Longchuan
,
Yunnan
,
24°27'37''N
,
97°45'9''E
, altitude
1227m
,
7.ix.2017
, tree trunk,
HW Chen
.
Etymology.
From the Greek word:
stachydifolius
, referring to the aedeagus with 1 pair of fringe-like processes.
Distribution.
China
(
Yunnan
).