Cephennium corruptum, 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 : 20

Cephennium corruptum group

Species of small size (0.9–1.2 mm), slender habitus, relatively long elytra, and pale colouration (usually reddish-yellow). Eyes composed of 3–5, sometimes weakly defined ommatidia without, or with very weak, pigmentation. Punctation of pronotum often more distinct than that of elytra. Elytra each with a small circular or transversely oval impression with whitish tomentose pubescence anteriorly. Hind wings completely reduced.

: protibia without distinct modifications; metaventrite extensively and shallowly impressed, depressed, or unmodified; aedeagus strongly dorso-ventrally depressed and short, much less than twice as long as broad; ventral process short and broad, apically broadly truncate; internal structures weakly to moderately sclerotized, not conspicuously minute, apico-medially with a more or less transverse structure; parameres thin, apically extending to, nearly to, or beyond apex of median lobe, with short and fine apical seta.

The species of the C. corruptum group can be assigned to two subgroups, one of them ( C. unguicum subgroup) including five species ( C. unguicum , C. deplectens , C. sicaferum , C. geminum , C. duplum ) from Southwest Anatolia and characterized by the presence of pairs of large spines in the internal sac of the aedeagus. The C. corruptum subgroup, which comprises the remaining ten species, is distributed in central southern Anatolia, Lebanon, and Jordan and lacks such distinct spines.

In the study region, the representatives of the C. corruptum group are locally endemic in South and Southwest Turkey (thirteen species), Lebanon (one), and Jordan (one) ( 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).