Ta xonomic study on the Chinese Steninae (Coleoptera, Staphylinidae), with descriptions of three new species of the Genus Stenus Latreille
Author
Lv, Wei-Xiang
Author
Zhao, Cai-Yun
Author
Zhou, Hong-Zhang
text
Zootaxa
2018
2018-06-06
4429
2
247
268
journal article
29960
10.11646/zootaxa.4429.2.2
fbbbe27e-4b65-497a-b0a9-bc8674251d6f
1175-5326
1283878
F0914D76-A4EB-45B7-A1EC-13F4B9C7BA52
7.
Stenus malickyi
Puthz, 2008
(
Figs.13
&
14
)
Puthz, 2008
: 183 (Type locality: Thailand: Doi Inthanon);
Puthz, 2013b
: 1343.
Type
material.
China
:
Yunnan
:
Lushu Contry
,
Luzhang town
,
YaoJiaping village
(
25°58'19.9'' N
, 98°42'37. 9'' E),
1male
,
1 female
,
2468 m
,
3–4.V.2015
,
Mei-Ying Lin
leg. (IZ-CAS).
Redescription
. BL:
7.3 mm
, FL:
3.25 mm
, HW:
0.96 mm
, PL: 1.0 mm, PW:
0.73 mm
, EL:
1.41 mm
, EW:
1.35 mm
, SPL:
1.13 mm
.
Macropterous; body black with bright luster and white pubescence dense. Antennae, maxillary palpi and legs yellowish. Clypeus black, labrum dark brown with moderately densely pubescent; paraglossae oval.
Head distinctly narrower than elytra. Interocular area with two shallow and broad longitudinal furrows, median portion scarcely convex, not reaching the level of dorsal eye margins; punctures round, mostly well delimited, the diameter of large punctures is about as wide as the basal cross section of antennal segment II; interstices smooth, most larger than half the diameter of punctures. Antenna slender, when reflexed extending beyond the posterior margin of pronotum.
Pronotum distinctly longer than broad, broadest in posterior half; disk uneven, without distinct median longitudinal furrow; punctures round, mostly well delimited, slightly smaller than those on head; interstices distinctly reticulated, mostly larger than the diameter of punctures.
FIGURE 13.
Stenus malickyi
Puthz, 2008
.
A
. habitus (dorsal view);
B
. forebody;
C
. elytra;
D
. abdomen;
E
. aedeagus;
F
. male sternite VIII;
G
. male sternite IX;
H
. male tergite IX & X;
I
. female sternite VIII;
J
. female tergite IX & X;
K
. gonocoxite. Scale bar =0.2 mm.
FIGURE 14.
Stenus malickyi
Puthz, 2008
.
A
. aedeagus;
B
. male sternite VIII;
C
. male sternite IX;
D
. male tergite IX & X;
E
. female sternite VIII;
F
. female tergite IX & X;
G
. gonocoxite. Scale bar = 0.2 mm.
Elytra trapezoid, slightly longer than wide; shoulders prominent, posterior margin deeply emarginated; humeral impression and long sutural impression indistinct; punctures and interstices are similar to those of pronotum.
Legs slender, tarsomeres IV deeply bilobed.
Abdomen cylindrical, only tergites III with line-like paratergites, tergites IV–VI with rudimentary lateral border; tergite VII with distinct apical membranous fringe; punctures round to elliptic, punctures round, gradually becoming smaller and sparser posteriad; interstices smooth, interstices on tergite VII larger than punctures.
Male: sternite VIII (
Figs. 13 F
&
14 B
) with a large and deep triangular emargination in posterior middle; sternite IX (
Figs. 13 G
&
14 C
) with weak serrate at posterior margin; tergite IX & X (
Figs. 13 H
&
14 D
) posterior margin truncate, but with a shallow emargination. Aedeagus (
Figs. 13 E
&
14 A
) almost violin-shaped, very acutely pointed at apex; apical sclerotized area subtriangular. Endophallus with median bands relatively short, each band strongly sclerotized along lateral rim, weakly turning posterolaterally at apical part; expulsion clasps almost X-shaped, strongly sclerotized; copulatory tube very long, attenuate, almost straight, moderately thick at basal part. Parameres slightly longer than median lobe, each slightly broadened in apical part, with 20–24 long apical setae.
Female: sternite VIII (
Figs.
13 I
&
14 E
) entire; Gonocoxite (
Figs. 13 J
&
14 F
) with serrate apically on posterior margin; tergite IX & X (
Figs. 13 K
&
14 G
) is similar to male; spermatheca undetected.
Distribution
.
China
(
Yunnan
),
Thailand
.
Remarks.
The species belongs to
S. cylindricollis
group; and it is new to
China
.