Uralocrangonyx gen.n. (Amphipoda: Crangonyctidae) from the Southern Ural, Russia

. Integrative analysis revealed that the 1928 from the Southern Ural, should be placed into a separate new genus, Together with the European Bactrurus the new genus forms the “ Bactrurus ” Clade according to the following morphological features: free urosomites; the dense armature of palm of gnathopods I–II; the of sternal gill/processes on pereonal segments II–III; and head with a concave anterolateral lobe bearing moderate inferior antennal sinus. At the same time, the new genus differs from the clade-related genera in the structure and armature of gnathopods I–II and the presence of 8–9 hooks in retinacules of uropods. The erection of this new genus changes the whole taxonomy of the Crangonyx -like species, and we propose to resurrect the generic name the type species Eucrangonyx gracilis Crangonyx islandicus Svavarsson et Kristjánsson, 2006, endemic to Iceland, should be also allocated into a separate genus, since it is not related to the European Crangonyx Spence Bate, 1859 s.str. or any species of the Nearctic Eucrangonyx Stebbing, 1899, but belongs to the “ Stygobromus ” clade of the family Crangonyctidae.