Cephennium jonicum, Holdhaus, 1908

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 jonicum group

Species of small size (1.0– 1.1 mm), slender habitus, relatively long elytra, and pale-reddish colouration. Eyes composed of approximately five defined ommatidia without, or with weak, pigmentation. Punctation of pronotum at least slightly more distinct than that of elytra. Elytra each with a small impression with whitish tomentose pubescence anteriorly. Hind wings completely reduced.

: protibia without distinct modifications; metaventrite extensively depressed or impressed; aedeagus (e.g., Figs 48–50 ) with bulbous capsule, basally subcircular in cross-section, approximately twice as long as broad; internal structures minute; parameres thin, apically extending slightly beyond apex of median lobe, with short and fine apical seta.

The C. jonicum group includes several described and undescribed species distributed in the Balkans. In the study region, the C. jonicum group is represented by only a single species, C. reductum , which has been recorded from both the Taurus and the Pontic Mountains (South and North Anatolia) ( Map 3 ).

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 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.