Diversity of Scydmaeninae (Coleoptera: Staphylinidae) in Upper Eocene Rovno amber
Author
Jałoszyński, Paweł
Author
Perkovsky, Evgeny
text
Zootaxa
2016
4157
1
1
85
journal article
10.11646/zootaxa.4157.1.1
2389f078-1812-4b4e-826a-561cd7e46654
1175-5326
262413
6BF4514A-892F-499F-BC1E-B7920C7A00B0
Glandulariini
genus & species indet. 2
(
Figs 34
,
221–224
)
Material
studied.
Late Eocene
of
Europe
,
Rovno
amber:
sex unknown; inclusion in irregular, approximately rectangular piece of amber
23.5 mm
long (
Fig. 34
), collection number K-7089 (
SIZK
).
This specimen is exposed only in lateral view and surrounded by a system of cracks that obscures most of fine details as well as the general silhouette, and proper description is not possible. The beetle has BL
1.18 mm
; HL
0.18 mm
, AnL about
0.53 mm
; PL
0.25 mm
, PW
0.33 mm
; EL
0.75 mm
. Antennae (
Fig. 224
) are gradually and relatively strongly thickened, with antennomeres I–V strongly elongate, VI slightly elongate, VII and VIII about as long as broad, IX and X strongly transverse, XI distinctly shorter than IX–X combined, about 1.5 × as long as broad, about as broad as X and narrowly rounded at apex. Pronotum (
Fig. 224
) seems to have only one lateral pair of antebasal pits (
Fig. 224
;
abp
).
Remarks.
It is not possible to identify this specimen beyond the tribe (which is evident on the basis of the structure of maxillary palps), even though it is relatively well-preserved and not very small. However, important characters are obscured by exceptionally turbid amber surrounding the beetle and possibly only methods based on microtomography could reveal details useful to characterize the genus.