Revision of Xanthopsis bodracus Makarenko, 1956 (Crustacea: Decapoda) from the Palaeogene of Ukraine

Abstract

The present article constitutes a revision of the decapod crustacean species Xanthopsis bodracus Makarenko, 1956 from the early Lutetian (Eocene, Palaeogene) of the Crimean Peninsula, southern Ukraine. The distinctive morphological characteristics of Xanthopsis bodracus enable its classification within the genus Harpactoxanthopsis Via Boada, 1959, as the type series of Xanthopsis bodracus precisely aligns with the diagnostic criteria of this genus. Of the five species in the genus Harpactoxanthopsis, Xanthopsis bodracus is morphologically closest to Harpactoxanthopsis quadrilobatus (Desmarest, 1822). However, there are currently insufficient grounds to confidently synonymise Xanthopsis bodracus with Harpactoxanthopsis quadrilobatus, as the poorly preserved type material, of which only a part has been preserved, does not allow this. In view of this, Xanthopsis bodracus has been revised as Harpactoxanthopsis sp. The Palaeogene decapod assemblages of Crimea consist of five genera including Coeloma A. Milne-Edwards, 1865, Protocallianassa Beurlen, 1930, Arcticocarcinus Shweitzer et al., 2016, Xanthopsis M’Coy, 1849, and Harpactoxanthopsis Via Boada, 1959.