The scientific name Pilumnus spinulosus Kessler, 1861 is resurrected for the representatives of the brachyuran genus Pilumnus Leach, 1816 (Decapoda: Brachyura: Pilumnidae), occurring along the northern coastal line of the Black Sea. This species has been mistakenly identified as P. hirtellus (Linnaeus, 1761) and recently, based on DNA data, referred to as P. aestuarii Nardo, 1869. Furthermore, a neotype of P. spinulosus Kessler, 1861 is designated as the original material is presently considered as lost. P. hirtellusponticus Czerniavsky, 1868, P. aestuarii Nardo, 1869, P. hirtellus intermedia Czerniavsky, 1884 are considered as junior synonyms of P. spinulosus Kessler, 1861.
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