Eight new species and additional records of the Pselaphodes complex from Laos and Vietnam, with a key to known species (Coleoptera: Staphylinidae: Pselaphinae)
Author
Yin, Zi-Wei
Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, China
pselaphinae@gmail.com
Author
Li, Ning
Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, China.
text
Acta Entomologica Musei Nationalis Pragae
2021
Acta. Ent. Mus. Natl. Pragae
2021-02-18
61
1
35
53
http://dx.doi.org/10.37520/aemnp.2021.002
journal article
55892
10.37520/aemnp.2021.002
f5f6ab5f-d650-4e1f-b6e3-c21928723245
1804-6487
5037464
0AEECD1F-1C71-4636-89A7-DA31D2DB73D6
Pselaphodes jendeki
sp. nov.
(
Figs 7A
,
8
)
Type
material
(
8 specimens
).
HOLOTYPE
:
VIETNAM
: LÀO CAI:
♂
, ‘VIETNAM N
22°20′N
,
103°50′E
,
SAPA
(
Lao Cai
)
25.5-
10.6.1991
, leg.
E. Jendek’
(
MHNG
)
.
PARATYPES
:
VIETNAM
:
LÀO CAI
:
7 ♂♂
, same label data as for
holotype
(
MHNG
,
SNUC
)
.
Diagnosis.
Male length
3.80–3.85 mm
. antennomeres 9–11 each elongate, almost simple, antennomere 9 with small disc-like process near apex. Protrochanter with acute ventral spine, profemur with sharp spine at middle; mesotrochanter with acute ventral spine, mesotibia with small, blunt apical tubercle. Horn-like metaventral processes considerably short, apices truncate and bent downwards. Median lobe of aedeagus asymmetric; parameres short; endophallus composed of three sclerites. Female unknow.
Description.
Male
(
Fig. 7A
). Body length
3.80–3.85 mm
. Head slightly longer than wide, HL
0.68–0.73 mm
, HW
0.68–0.70 mm
; eyes prominent, each composed of about 40 facets. Antennomeres 2–8 each moniliform, antennomeres 9–11 (
Fig. 8A
) each strongly elongate and enlarged, antennomere 9 with small disc-like structure near apex. Pronotum (
Fig. 8B
) approximately as long as wide, PL
0.65–0.68 mm
, PW
0.62–0.67 mm
, sides narrowing anteriorly at apical two-fifths. Elytra broader than long, EL
1.10–1.20 mm
, EW
1.30–1.40 mm
. Horn-like metaventral processes (
Fig. 8C
) short and broad in lateral view, apically bifid, upper apex acute, apex truncate.Protrochanter (
Fig. 8D
) with thin, acute ventral spine; profemur with sharp ventral spine at middle; mesotrochanter (
Fig. 8E
) with acute ventral spine, mesofemur simple, mesotibia (
Fig. 8F
) with small apical tubercle; metatrochanters and metafemur (
Fig. 8G
) simple. Abdomen broad at base and narrowed apically, AL
1.15–1.20 mm
, AW
1.30 mm
. Sternite 7 (IX) (
Fig. 8H
) hemi-membranous. Aedeagus (
Figs
8I
–E
)
0.75 mm
long, median lobe asymmetric dorso-ventrally, narrowing apically and curved rightwards at apex in dorsal view; parameres much shorter than median lobe, each with three apical setae, endophallus composed of one triangle and two slightly curved, elongate sclerites.
Fig. 7. Dorsal habitus of
Pselaphodes
males. A –
P. jendeki
sp. nov.
; B –
P. nongfa
sp. nov.
Scale bars: 1 mm.
Female.
Unknown.
Comparative notes.
This species belongs to the
P
.
tianmuensis
species group whose males share almost simple antennal clubs except for antennomere 9 which has a disc-like process near the apex. The new species may be readily separated from allied species by short and truncate horn-like metaventral processes, unique configuration of the aedeagus, as well as by its distribution.
Etymology.
The new species is named after the Slovak entomologist Eduard Jendek, collector of the
holotype
.
Distribution.
Vietnam: Lào Cai.