Cephennium unguicum, 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 : 24-25

Cephennium unguicum spec. nov.

urn:lsid:zoobank.org:act:92FD91A3-6A6F-4EBB-BBBF-2CA222D6FD14

( Figs 22 , 59 , Map 3 )

Type material: Holotype : “ N37°41'26 E027°13'43 (24), Türkei Aydin Dilek Dagi, s Güzelcamli 410 m 28.4.2006, l. Brachat & Meybohm / Holotypus  Cephennium unguicum sp. n., det. V. Assing 2020” (cAss) . Paratypes: 3 , 2 : same data as holotype (cAss); 1 : “ N37°40'19 E027°10'41 (2), Türkei Aydin Dilek Dagi, s Kanyon 670 m 17.4.2006, l. Brachat & Meybohm” (cAss) .

Etymology: The specific epithet is an adjective derived from the Latin noun unguis (claw) and alludes to the conspicuous pair of claw-shaped structures in the internal sac of the aedeagus.

Description: Body length 1.0– 1.1 mm. Habitus as in Fig. 22 . Punctation of pronotum more distinct than that of elytra. Eye rudiments minute, composed of three or four weakly defined ommatidia without pigmentation. Other external and male secondary sexual characters as in C. marasicum and C. corruptum , except as follows: : metaventrite not impressed, only indistinctly depressed in the middle at most; aedeagus ( Fig. 59 ) small, broad, and apically truncate, 0.23-0.25 mm long; internal sac with a pair of large and strongly curved claw-shaped structures; paramere apically extending to apex of median lobe, with short apical seta.

Comparative notes: Cephennium unguicum is distinguished from the species of the C. corruptum subgroup by the presence of claw-shaped spines in the internal sac of the aedeagus. For characters separating it from other species of the C. unguicum subgroup see the comparative notes in the following sections.

Distribution and natural history: The type locality is situated in Dilek Dağı (in the peninsula close to the Greek island Samos), Aydın province, Southwest Anatolia ( Map 3 ). The specimens were collected at an altitude of 410 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 59–69: Aedeagus in ventral/dorsal view (59–68) and internal structures of aedeagus in ventral view (69) of Cephennium unguicum (59), C. deplectens (60), C. sicaferum (61), C. geminum (62–64; 62: Termessos; 63: Olimpos; 64: Kemer), C. duplum (65–66), C. jordanicum (67), and C. judaeum (68–69; drawings by C. Besuchet). Scale bar: 0.1 mm.