Keywords

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The genus Dermacentor is under revision by one of us (DAA). Therefore, several changes in the taxonomy and nomenclature of this genus are expected in the near future.

Dermacentor rosmari Ass, 1935 was described from two specimens collected from a walrus, Odobenus rosmarus (Carnivora: Odobenidae), in the Kara Sea, but it is impossible to determine the tick in question based on the description and figures in Ass (1935). Clearly, these specimens are not Dermacentor because eyes are lacking. We tried to locate the types of D. rosmari but were unsuccessful. Pomerantzev (1950) regards D. rosmari as a synonym of Hyalomma aegyptium, while Camicas et al. (1998) treat it as a synonym of Ixodes uriae. We find these decisions unjustifiable and consider D. rosmari a nomen nudum. Still, some authors, such as Raga et al. (2008), regard D. rosmari as valid.