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
)
hirtifoliacea
sp. nov.
(
Figs 2G
,
10
)
Diagnosis.
This species resembles
S. unguiculata
sp. nov.
in the colour patterns of body (
Fig. 2G
) and male terminalia (
Fig. 10
), but can be distinguished by the aedeagus with 4 short and thick processes per side (
Fig. 10C
); sublateral processes of gonopods shorter and broadly separated than in
S. unguiculata
sp. nov.
(
Fig. 10D
). The minimum interspecific genetic distance to
S. unguiculata
is 3.3%, which is smaller than to other species (
Table 2
); see description of
S. unguiculata
for more detail.
FIGURE 10.
Stegana
(
Steganina
)
hirtifoliacea
sp. nov.
, male terminalia: A. Epandrium, surstylus and cercus (lateral view); B. Surstylus (inner view); C. Hypandrium, parameres, aedeagus and aedeagal apodeme (ventral view); D. Gonopods (ventral view); G. Tenth sternite (ventral view). Scale lines = 0.1 mm.
Description.
Male: Pedicel yellow medially, black laterally; first flagellomere nearly black. Palpus yellow basally, brown on distal 1/
3 in
male. Mesonotum brown (
Fig. 2G
). Katepisternum dark brown on upper part, whiteyellow on lower part (
Fig. 2G
). Scutellum black (
Fig. 2G
). Legs dark brown to black, yellow on basal part of fore femora and 2nd to 5th tarsomeres. Fore femur with 3 long setae on distal half of posteroventral surface. All abdominal tergites brown (
Fig. 2G
); all sternites yellowish brown. Male terminalia (
Fig. 10
): Epandrium with ca. 20 setae near posterior portion per side. Surstylus broad in lateral view. Cercus lacking pubescence. Tenth sternite with 1 pair of asymmetric projections sublaterally. Paramere with ca. 2 sensilla. Aedeagus with pubescence. Gonopods with 1 suberect lobe-like process bearing several pubescence.
Measurements.
BL =
2.80 mm
in
holotype
(
1♂
paratype
: 2.75), ThL =
1.13 mm
(1.26), WL = 2.00 mm (2.65), WW = 1.00 mm (1.21), arb = 6/5 (5/4), avd = 0.60 (0.84), adf = 1.43 (1.02), flw = 1.57 (1.90), FW/HW = 0.31 (0.40), ch/o = 0.13 (0.11), prorb = 1.07 (0.90), rcorb = 0.60 (0.62), vb = 0.25 (0.27), dc1 = damaged (damaged), presct1 = 0.50 (damaged), sct1 = 1.59 (damaged), sterno = damaged (0.87), orbito = 2.25 (1.91), dcp = 0.24 (0.25), sct1p = 1.08 (1.15), C = 2.00 (2.19), 4c = 1.13 (1.42),
4v
= 1.57 (1.82),
5x
= 1.33 (1.13), ac = 9.00 (7.47), M = 0.50 (0.62), C3F = 0.71 (0.58).
Specimens examined.
Holotype
♂
(
SCAU
, No. 124706),
China
:
Dashuigou
,
Lüchun
,
Yunnan
,
22°57'19''N
,
101°57'4''E
, altitude
1310m
,
2.viii.2016
, tussock,
HW Chen
.
Paratype
:
China
:
1♂
(
SCAU
, No. 124709),
Mengma
,
Menglian
,
Yunnan
,
22°12'59''N
,
99°22'51''E
, altitude
1070m
,
15.iv.2018
, tree trunk,
HW Chen
.
Etymology.
A combination of the Latin words:
hirtus
+
foliaceus
, referring to the aedeagus with several setae.
Distribution.
China
(
Yunnan
).