The genus Leucophenga (Diptera, Drosophilidae), part VII: the subpollinosa species group from China, with morphological and molecular evidence
Author
Huang, Jia
Author
Su, Yirui
Author
Chen, Hongwei
text
Zootaxa
2017
4247
3
201
245
journal article
33353
10.11646/zootaxa.4247.3.1
563cde0f-0524-46fc-9b9a-dcdb3ca5eb98
1175-5326
438516
0C795602-87DE-412D-ADE4-153702AA887B
Leucophenga nigroscutellata
Duda, 1924
(
Figs. 2
D, 3G, 3H, 7E, 7F, 8A, 13)
Leucophenga nigroscutellata
Duda, 1924a
: 186
; 1924b: 237;
Lin & Wheeler, 1972
: 249
;
Okada, 1987
: 679
.
Diagnosis.
This species is mostly similar to
L
.
fuscipedes
sp. nov.
in having the wing fuscous along R1 and costa (
Fig. 2
D, L), the shape of paramere (
Figs. 13
,
20
C), and the aedeagus ventrolaterally with a thin process bearing a sensillum at tip (
Figs. 13
,
20
D), but can be distinguished from the latter by the color patterns of abdominal tergites in both male (
Fig. 7
E, F) and female (
Fig. 8
A), and the aedeagus rounded apically (
Fig. 13
D); see below that species.
However, the specimens show distinctly differences from the latest and most relevant description of
L
.
nigroscutellata
from
Malaysia
and
Indonesia
(
Okada 1987
) in the paramere (
Fig. 13
C) and aedeagus (
Fig. 13
D) lacking pubescence, and the structure of aedeagus (
Fig. 13
D), while no conspicuous difference could be found in having the thorax mostly dark colored (
Fig. 3
G), and the color patterns of abdominal tergites in both male (
Fig. 7
E, F;
Fig. 1
C in
Okada 1987
) and female (
Fig. 8
A;
Fig. 1
D in
Okada 1987
); moreover, parts of the specimens were collected near the
type
locality. Therefore, all of the specimens were identified as
L
.
nigroscutellata
to avoid further confusion.
Description.
Ocellar triangle dark brown, with ca. 0–2 seta(e) above ocellar setae. Frons brownish yellow, with an indistinct, brownish, longitudinal stripe medially. Pedicel brownish yellow; first flagellomere yellow. Clypeus brown. Palpus brownish yellow to brownish. Mesonotum brownish yellow to brownish, mostly with three broad, brown, longitudinal stripes medially and laterally in male (
Fig. 3
G), brownish yellow, brownish before scutellum in female. Postpronotal lobe yellow (
Fig. 3
H). Acrostichal setulae in ca. 8–12 irregular rows (
Fig. 3
G). Scutellum dark brown, brownish yellow at tip (
Fig. 3
G). Pleura, katepisternum and meron mostly brown above (
Fig. 3
H). Wing (
Fig. 2
D): Costal vein between R2+3 and R4+5 distally with ca. 4–7 peg-like spinules on ventral surface. Midleg obviously dark brown on knees. Abdominal tergites brown to black, with a yellow patch medially between 2nd to 3rd tergites in male (
Fig. 7
E), 2nd tergite with a yellow patch medially or posteromedially in female (
Figs. 7
E, 8A), 5th tergite with a pair of yellow patches anteromedially in some female (
Fig. 8
A). Male terminalia: Epandrium with ca. 3 setae near posterior margin per side (
Fig. 13
A). Surstylus rounded apically (
Fig. 13
A). Hypandrium with 1 sensillum (
Fig. 13
B). Paramere with ca. 1 sensillum submediodorsally and ca. 7 sensilla distally (
Fig. 13
C).
FIGURE 13.
Leucophenga nigroscutellata
Duda, 1924
, male terminalia in lateral view. A. Epandrium, surstylus and cercus; B. Hypandrium, paramere, gonopods and aedeagus; C. Paramere; D. Aedeagus and laterally process (lp). Scale bars = 0.1 mm.
Measurements.
BL =
2.40–2.70 mm
in
5♂
,
2.33–2.67 mm
in
5♀
, THL = 1.00–
1.13 mm
in
♂
,
0.93–1.17 mm
in
♀
, WL =
2.07–2.17 mm
in
♂
, 2.00–
2.23 mm
in
♀
, WW = 0.93–1.00 mm in
♂
,
0.97–1.03 mm
in
♀
, arb = 6/2–4, avd = 0.82–1.00, adf = 1.57–1.86, flw = 1.71–2.33, FW/HW = 0.33–0.38, ch/o = 0.03–0.05, prorb = 0.62–0.73, rcorb = 0.64–0.80, vb = 0.30–0.50, dcl = 0.27–0.54, presctl = 0.40–0.58, sctl = 1.29–1.41, sterno = 0.67–0.80, orbito = 1.40–2.25, dcp = 0.29–0.39, sctlp = 1.00–1.20, C = 2.07–2.61, 4c = 1.13–1.48,
4v
= 2.00–2.61,
5x
= 1.75–2.27, ac = 2.29–2.92, M = 0.69–0.91, C3F = 0.72–0.79.
Specimens examined.
CHINA
:
2♀
(
SCAU
, Nos 128945, 46),
Wulai
,
Hsinpei
,
Taiwan
,
490m
,
19.x.2012
, ex tussock,
HW Chen
;
3♂
,
3♀
(
SCAU
, Nos 128899, 128957–61),
Yixiang
,
Puer
,
Yunnan
,
22°45'N
,
101°03'E
,
1400m
,
12.xii.2012
, ex tussocks,
HW Chen
;
2♂
,
3♀
(
SCAU
, Nos 128952–56),
Muyiji Park
,
Ximeng
,
Yunnan
,
1100m
,
2.iv.2011
, ex tussocks, YR
Su
,
SJ Yan
;
2♂
,
2♀
(
SCAU
, Nos 128948–51),
Hesong
,
Menghai
,
Yunnan
,
1750m
,
2.iv.2011
, ex tussocks,
SJ Yan
;
1♀
(
SCAU
, No. 128947),
Menglun
,
Mengla
,
Yunnan
,
21°41'N
,
101°25'E
,
780m
,
10.iv.2010
, ex tree trunk, YR
Su
;
1♂
(
SCAU
, No. 128944),
Wangtianshu
,
Mengla
,
Yunnan
,
21°28'N
,
101°38'E
,
600m
,
25.iv.2007
, ex tussock,
HW Chen.
Distribution.
China
(
Taiwan
,
Yunnan
),
Nepal
,
Sri
Lanka
, Borneo,
Malaysia
(Cameron Highlands),
Indonesia
(
Java
).