Liévano-Beltrán, Luis ArturoSimões, Nuno2022-09-122022-09-122021-03-31Liévano-Beltrán LA, Simões N. Updated Distribution of the Mysid Antromysis cenotensis (Crustacea: Peracarida), a Protected Key Species in Yucatan Peninsula Cenotes. Diversity. 2021; 13(4):154. https://doi.org/10.3390/d13040154https://hdl.handle.net/1969.6/93967We present 52 new geographic location records for the peracarid crustacean Antromysis cenotensis Creaser, 1936, endemic in cenotes of the Yucatan Peninsula, Mexico. This species is currently considered threatened and, therefore, is protected by Mexican law. These results arise from several expeditions carried out between 2017 and 2020 in 75 locations within the cenote-ring, the interior, and coastal plains of the peninsula. A comprehensive literature review provided 84 geographic location records since the species was described in 1936. A map with 136 geographic location records that better describe the current species distribution is also included. With this information, plus some notes on the ecology of the species, a comprehensive literature and data review, and a brief analysis regarding the possible factors associated with the confirmed absence of the species in some locations in the state of Yucatan, we provide a brief and condensed summary of the actual knowledge on this particular species. The data in Darwin Core format can be retrieved in Zenodo.environmental sciencebiogeographydistribution recordsgroundwatercave biologyunderwater cavescenotemysidstygobiontbioindicatorArticlehttps://doi.org/10.3390/d13040154