Taxonomy of the genus Megalinus Mulsant & Rey (Coleoptera: Staphylinidae, Xantholinini) and seven new species from China
Author
ZHOU, YU-LINGZI
Author
BORDONI, ARNALDO
Author
ZHOU, HONG-ZHANG
text
Zootaxa
2013
2013-10-25
3727
1
1
66
http://dx.doi.org/10.11646/zootaxa.3727.1.1
journal article
10.11646/zootaxa.3727.1.1
11755334
EBFEDD52-94FA-4AC9-93BB-BE6101BB1B31
Megalinus boki
(
Bordoni, 2000
)
(Fig. 8A–E; Fig. 8-1A–F)
Bordoni, 2000: 131
(
Lepidophallus
;
Type
locality: N.
China
:
Shaanxi
, Nan Wutai);
Herman, 2001a: 3659
(catalog);
Bordoni, 2002: 648
(redescriptions; characters;
Sichuan
,
Yunnan
,
Guizhou
,
Zhejiang
);
Bordoni, 2003c: 268
(
Yunnan
,
Sichuan
,
Guizhou
,
Zhejiang
);
Smetana, 2004: 689
(catalog;
Guizhou
,
Sichuan
, Shaan,
Shanxi
,
Yunnan
,
Zhejiang
);
Bordoni, 2008: 58
(
Megalinus
; species list of
Megalinus
).
Addtional material:
one male
,
CHINA
:
Chongqing
:
Wushan co.
:
Liziping
(
E 110.0089
,
N 31.2005
),
1850 m
,
18.
V
.1994, collected by
Li Wenzhu
(
IZ-CAS
)
.
Male
. Abdominal segment VIII entirely covered with setiferous punctures, except a narrow medial longitudinal impunctate band; posterior margins of tergite VIII slightly protruding backwards, that of sternite VIII distinctly protruding backwards medially (Fig. 8-1A, B). Tergite IX symmetrical, connected mediobasally. Sternite IX symmetrical, with bisinuate mediobasal margin and distinctly emarginated posterior margin (Fig. 8-1C). Tergite X with subtruncated base and emarginated apex (Fig. 8-1D),
in situ
broadly exposed between tergite IX. Median lobe of aedeagus broad, large sized (Fig. 8D, E; Fig. 8-1E, F), basal piece without transparent, membranous medial-longitudinal band; basal bulb
1.13 mm
long; anterior portion short, tapered apically, nearly 1/10 of basal bulb length. Parameres symmetrical and thin, shorter than 1/3 of basal bulb length. Internal sac composing of four groups of symmetrical scales, central two groups 8-shaped, lateral two of four paired large notched structures.
Distribution.
China
(
Sichuan
,
Shaanxi
,
Guizhou
,
Yunnan
,
Zhejiang
).
Remarks.
This species could be distinguished from its congeners by: 1) dorsal surface of head with round, deep and medium-sized punctures, interspaces between punctures 1–2 punctures’ diameter, which mixed with smaller punctures, mainly on anterior half, especially denser on frontal region; 2) mesoscutellum shiny, extensively covered with polygonal reticulum; 3) posterior margins of tergite VIII slightly protruding backwards, that of sternite VIII distinctly protruding backwards medially; 4) sternite IX symmetrical, with bisinuate mediobasal margin and distinctly emarginated posterior margin; 5) tergite X with subtruncated base and emarginated apex; 6) median lobe of aedeagus broad, large sized, basal piece without transparent, membranous medial-longitudinal band; basal bulb
1.13 mm
long; anterior portion short, tapered apically, nearly 1/10 of basal bulb length; 7) internal sac composing of four groups of symmetrical scales, central two groups 8-shaped, lateral two of four paired large notched structures. Although this species possesses quite similar external morphologies (Fig. 8A–C) to
Megalinus flavus
(Bordoni)
, the differences of above points 3–7 could be easily found between the two species.