The Stegana (Oxyphortica) convergens species group from the Oriental region (Diptera: Drosophilidae)
Author
Cheng, Yu
Author
Xu, Miaofeng
Author
Chen, Hongwei
text
Zootaxa
2010
2531
57
63
journal article
10.5281/zenodo.196546
f54719da-cec3-4c9a-9e45-05abdcb307c4
1175-5326
196546
Stegana
(
Oxyphortica
)
apicopubescens
sp. nov.
(
Figs 5–8
)
Diagnosis
. Surstylus strongly protruded anteroventrally, with 2 strong prensisetae dorsally (
Fig. 6
). This species is somewhat similar to
S.
(
O
.)
apicosetosa
sp. nov.
, see under that species.
Description
. Frons dark brown. Face yellow. Gena and clypeus brown. Mesoscutum yellow medially, brownish laterally. Pleura yellow below. Scutellum brownish. All abdominal tergites yellow medially, brown on lateral and posterior margins. Sternites yellow, tergites 6th and 7th brown to dark brown in female.
FIGURES 5–8.
Stegana
(
Oxyphortica
)
apicopubescens
sp. nov.
3. 5. Epandrium, cercus and surstylus; 6. Surstylus; 7, 8. Hypandrium, parameres, gonopods, aedeagus and aedeagal apodeme. Scale lines = 0.1 mm.
Measurements
. BL =
2.75 mm
in
holotype
(range in 43 5ΨΨ
paratypes
:
2.60–2.85 in
3,
2.78–3.52 in
ΨΨ), ThL =
1.16 mm
(
1.18–1.20 in
3,
1.24–1.44 in
ΨΨ), WL =
2.55 mm
(
2.50–2.60 in
3,
2.41–2.75 in
ΨΨ), WW =1.00 mm (
0.90–1.02 in
3,
1.13–128 in
ΨΨ), arb =7/4 (7–8/4–5), avd = 0.65 (0.62–0.95), adf = 2.25 (1.83–2.63), flw =1.50 (1.75–2.13), FW/HW = 0.44 (0.40–0.47), ch/o = 0.08 (0.08–0.10), prorb = 1.36 (1.16–1.68), rcorb = 0.95 (0.77–1.00), vb = 0.78 (0.59–0.75), dcl = 0.13 (0.12–0.49), presctl = 0.58 (0.43– 0.65), sctl = 1.18 (1.15–1.26), sterno = 0.81 (0.73–0.92), orbito = 2.50 (1.40–2.00), dcp = 0.36 (0.25–0.34), sctlp = 1.19 (0.83–1.33), C = 3.36 (2.53–3.59), 4c = 0.77 (0.68–0.91),
4v
= 1.82 (1.68–1.88),
5x
= 1.30 (1.00– 1.47), ac = 4.30 (3.36–5.33), M = 0.43 (0.43–0.57), C3F = 0.86 (0.81–0.93).
Specimens examined.
Holotype
3 (SCAU, No.
120499
),
CHINA
: Maoershan, Guilin, Guangxi, 25°51΄ N, 110°27΄ E, alt.
500 m
,
18.x.2004
, H.W. Chen.
Paratypes
: 43 (SCAU, Nos
120500
-03), same data as
holotype
, H.L. Cao, M.F. Xu & X.L. Zhan; 23 (SCAU, Nos
120504
, 05), Chongzou, Guangxi, 22°33΄ N, 106°92΄ E, alt.
230 m
, 23,24.
viii.2004
, H.W. Chen; 73 9ΨΨ (23 3ΨΨ in KIZ; 53 6ΨΨ in SCAU, Nos
120506
-16), Huolushan, Guangdong, 23°11΄ N, 113°22΄ E, alt.
80 m
,
5.iv.2005
, M.F. Xu.
Etymology
. A combination of the Latin words:
apex
and
pubescens
, referring to the gonopods with pubescence.
Distribution.
China
(Guangdong, Guangxi).