Cephennium digitale, 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 : 19

Cephennium digitale spec. nov.

urn:lsid:zoobank.org:act:06ED0DE9-D72E-410C-9A7A-B7330175D3D9

( Figs 12 , 44–45 , Map 2 )

Type material examined: Holotype : “ N41°25'53 E31°57'51 (24), TR Zonguldak 1.5.2014, Caycuma w 570 m, Brachat & Meybohm / Holotypus  Cephennium digitale sp. n., det. V. Assing 2020” (cAss).

Etymology: The specific epithet (Latin, adjective: of a/the finger) alludes to the finger-shaped spines in the internal sac of the aedeagus.

Description: Body length 1.4 mm. Habitus as in Fig. 12 . Colouration: body dark-reddish. External characters as in C. spinigerum .

: protibia subapically not curved, weakly excavate in apical portion; aedeagus ( Figs 44–45 ) 0.39 mm long; apex of ventral process of narrowly triangular shape in ventral view; internal sac with several horn- or fingershaped structures of various sizes and shapes; parameres thin, not sinuate, extending to apical third of ventral process.

Comparative notes: Cephennium digitale differs from the similar and geographically close C. spinigerum only by a more slender aedeagus with fewer internal spines of different shapes.

Distribution and natural history: The type locality is situated in Zonguldak province, Northwest Anatolia ( Map 2 ). The holotype was sifted from litter in a beech forest with rhododendron undergrowth at an altitude of 570 m.

Figures

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).

Figs 9–16: Male habitus in dorsal view of Cephennium varispinosum (9), C. victrix (10), C. spinigerum (11), C. digitale (12), C. reductum (13), C. corruptum (14), C. marasicum (15), and C. dolucanum (16). Scale bar: 1.0 mm.

Figs 36–47: Aedeagus in ventral view (36, 38, 40, 42, 44), internal structures of aedeagus (37, 39, 41, 43, 45), and apical portion of aedeagus in ventral view (46–47) of Cephennium ericinum (36–37), C. varispinosum (38–39), C. victrix (40–41), C. spinigerum (42–43), C. digitale (44–45), C. fractum (46), and C. infractum (47). Scale bars: 36, 38, 40, 42, 44: 0.2 mm; 37, 39, 41, 43, 45–47: 0.1 mm.