Zyrastilbus CAMERON, 1939

Assing, Volker, 2017, On the Lomechusini fauna of the East Palaearctic and Oriental regions, with a focus on the genera Orphnebius and Amaurodera (Coleoptera: Staphylinidae: Aleocharinae), Beiträge Zur Entomologie = Contributions to Entomology 67 (1), pp. 63-106 : 88

3.4 Genus Zyrastilbus CAMERON, 1939

Comment: Zyrastilbus was described by CAMERON (1939) to include only Zyras almorensis CAMERON, 1939 from North India, the type species by monotypy. According to HLAVÁČ et al. (2011), Zyrastilbus has been treated as a distinct genus since PACE (2004), and two additional species have subsequently been assigned to this taxon: Z. adesi ( PACE, 1998) and Z. angkorensis PACE, 2004 . An examination of the type material of Z. almorensis and Z. adesi , as well as the details and illustrations provided in the original description of Z. angkorensis revealed that neither Z. adesi nor Z. angkorensis are congeneric with Z. almorensis ; for arguments regarding the generic assignment of Z. adesi see the section on Pheidologitonetes adesi . As can be inferred from the description and the illustrations in PACE (2004), Z. angkorensis is distinguished from Z. almorensis by significant external and sexual characters, especially the completely different habitus (including the shapes of the head and the pronotum), a completely different antennal morphology, and a relatively large and voluminous spermatheca. The true generic assignment ( Drusilla ?) of Z. angkorensis is currently unknown and can be clarified only based on an examination of the type material.