The Cephennium fauna of Turkey and the Middle East (Coleoptera: Staphylinidae: Scydmaeninae)
Author
Assing, Volker
Author
Meybohm, Heinrich
text
Beiträge Zur Entomologie = Contributions to Entomology
2021
2021-06-30
71
1
1
28
journal article
10.21248/contrib.entomol.71.1.001-028
0005-805X
5743187
3325609F-6C1F-491F-8C48-C07149C0A0E6
Cephennium varispinosum
spec. nov.
urn:lsid:zoobank.org:act:
04C4304D-F84A-400B-8710-15407DE9BCCD
(
Figs 8–9
,
38–39
,
Map 2
)
Type material examined
:
Holotype
: “TR [11] –
Ordu
,
18 km
NE
Akkuş
, 40°56'03"[N], 37°06'47"[E],
920 m
, mixed deciduous forest,
15.VII.2008
,
V
. Assing /
Holotypus
Cephennium varispinosum
sp. n.
, det.
V
. Assing 2020” (cAss)
.
Paratype
: same data as holotype (cAss).
Etymology
: The specific epithet is an adjective composed of the adjective varius (various) and spinosum (spinose). It alludes to the presence of spines of various sizes and shapes in the internal sac of the aedeagus.
Description
: Body length
1.4–1.5 mm
; length of pronotum
0.45 mm
; width of pronotum
0.54 mm
; length of antennae approximately
0.6 mm
. Habitus as in
Fig. 9
. Colouration: forebody reddish-brown; elytra reddish.
Map 2
: Distributions of
Cephennium fractum
(black circles) and of the species of the
C. ericinum
group:
C. digitale
(white triangle);
C. spinigerum
(black triangle);
C. victrix
(white circles);
C. varispinosum
(black diamond);
C. ericinum
(white diamond).
Eyes reduced to small rudiments without ommatidia (
Fig. 8
). Antennomeres VIII–X strongly transverse. Pronotum rather large in relation to elytra and as broad as elytra, 1.2 times as broad as long, broadest in anterior half, and strongly convex in cross-section; lateral margins straight in posterior half. Elytra without tomentose impressions anteriorly; humeral carina distinct, approximately as long as the combined length of the basal 3–4 antennomeres.
: protibia subapically not curved, but somewhat flattened on inner side; aedeagus (
Figs 38–39
)
0.38 mm
long; ventral process gradually narrowed apicad in ventral view; internal sac with approximately eight weakly sclerotized and rather small spines of various sizes and shapes ventrally, and with a pair of larger and strongly curved spines dorsally; parameres very thin and indistinct, not sinuate, extending to apical third of ventral process.
Comparative notes
: Aside from its aedeagus,
C. varispinosum
is characterized among the Turkish
Cephennium
species
by a rather large pronotum, strongly reduced eyes, and strongly transverse antennomeres VIII–X. It is additionally separated from the geographically close
C. ericinum
by much smaller size and weakly modified male protibiae.
Distribution and natural history
: The
type
locality is situated to the northeast of Akkuş,
Ordu province
, North
Anatolia
(
Map 2
). The specimens were sifted from leaf litter in a mixed forest with predominant
Fagus
at an altitude of
620 m
.