Tribalus (Tribalus)

Lackner, Tomáš & Vienna, Pierpaolo, 2017, Histeridae of Socotra (Coleoptera: Histeroidea), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 57, pp. 55-76 : 57

Tribalus (Tribalus) sp.

Material examined. YEMEN: SOCOTRA: 1 J and 1 unsexed spec., Kazazhan area, shrubland on limestone, sifting, 12°33.8′N, 54°19.8′E, 540 m, 10.vi.2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart lgt. ( NMPC).

Comments. Subgenus Tribalus s. str. of the genus Tribalus Erichson, 1834 , with 65 described species is a species-rich genus with bulk of its representatives occurring in Africa, while a smaller number of taxa are present in the Palaearctic and Oriental realms ( MAZUR 2011). Its representatives are found mostly under stones in wetter areas near streams, occasionally they are collected by sifting forest detritus as well. The subgenus contains numerous undescribed species; furthermore, its representatives are rather uniform in general outlook and the most reliable taxonomic characters are found on the male genitalia (T. Lackner, unpublished data). Due to these factors as well as absence of any contemporary or reliable identification keys, we were unable to determine its exact taxonomic identity and we advocate its revision. New taxon for the Socotra archipelago.