Cephennium nemruticum, Assing & Meybohm, 2021

Assing, Volker & Meybohm, Heinrich, 2021, The Cephennium fauna of Turkey and the Middle East (Coleoptera: Staphylinidae: Scydmaeninae), Beiträge Zur Entomologie = Contributions to Entomology 71 (1), pp. 1-28 : 24

Cephennium nemruticum spec. nov.

urn:lsid:zoobank.org:act:643B8783-90BC-4DE2-9DA7-45EFCF67778C

( Figs 21 , 51 , Map 3 )

Type material: Holotype : “ TR – Adıyaman [22], 50 km NE Adıyaman, 8 km NE Narince , 870 m, 37°54'58N, 38°48'45E, 24.III.2005, P. Wunderle / Holotypus  Cephennium nemruticum sp. n., det. V. Assing 2020” (cAss).

Etymology: The specific epithet is an adjective derived from Nemrut, the name of the mountain where the species was discovered.

Description: Body length 1.2 mm. Habitus as in Fig. 21 . Punctation of pronotum only slightly more distinct than that of elytra. Eye rudiments very small, composed of approximately 3 weakly defined ommatidia. Other external and male secondary sexual characters as in C. marasicum and C. corruptum .

: aedeagus ( Fig. 51 ) short, broad, and apically truncate, approximately 0.33 mm long; internal sac with weakly sclerotized non-fimbriate structures of distinctive shapes; paramere apically extending to apex of median lobe, with short apical seta.

Comparative notes: Cephennium nemruticum is reliably distinguished from other species of the C. corruptum group only by the shape and internal structures of the aedeagus.

Distribution and natural history: The type locality is situated in Nemrut Dağı, Adıyaman province, central southern Anatolia ( Map 3 ). The holotype was sifted from leaf litter in a rocky slope with oak at an alitude of 870 m.

Figures

Map 3: Distributions of the species of the Cephennium jonicum and C. corruptum groups in Turkey: C. unguicum (grey stars); C. deplectens (white stars); C. sicaferum (grey triangles); C. duplum (grey diamonds); C. geminum (grey circles); C. reductum (black triangles); C. corruptum (black circles); C. fimbriatum (white square); C. besucheti (black square); C. affimbriatum (white circles); C. marasicum (black diamonds); C. dolucanum (white triangle); C. kartalicum (black star); C. nemruticum (white diamond).

Figs 17–24: Male habitus in dorsal view of Cephennium fimbriatum (17), C. besucheti (18), C. affimbriatum (19), C. kartalicum (20), C. nemruticum (21), C. unguicum (22), C. deplectens (23), and C. jordanicum (24). Scale bar: 1.0 mm.

Figs 48–58: Aedeagus in lateral (48) and in ventral view (49–58) of Cephennium reductum (48–50), C. nemruticum (51), C. marasicum (52), C. dolucanum (53), C. besucheti (54), C. affimbriatum (55), C. kartalicum (56), C. corruptum (57), and C. fimbriatum (58). Scale bar: 0.1 mm.