First occurrence of the genus Yaldwynopsis Guinot & Richer de Forges, 1995 in the Atlantic Ocean, Guadeloupe Island, with description of a new species (Crustacea, Decapoda, Brachyura, Homolidae)

Zoosystema 48 (14): 361-371, DOI: 10.5252/zoosystema2026v48a14 ABSTRACT A homolid crab of the genus Yaldwynopsis Guinot & Richer de Forges, 1995, collected using traps at a depth of 310 m off Guadeloupe Island, Lesser Antilles, Caribbean Sea, represents the first record of the genus in the Atlantic Ocean.The specimen, an ovigerous female, is compared with the four known species of the genus, all previously described from the Pacific Ocean.

It is identified as a new species (Y. couppeyi n. sp.) and formally described in this study. Additionally, a key to all known Yaldwynopsis species is provided, along with discussions on geographic distributions and fishing gear selectivity.