Caprellids (Crustacea: Amphipoda) from the Gulf of Mexico, with observations on Deutella mayeri, redescription of Metaprotella hummelincki, a taxonomic key and zoogeographical comments

Seventeen species of caprellid amphipods have been recorded so far in the Gulf of Mexico. New distributional and habitat data are included for 12 species. Pseudaeginella biscaynensis has been recorded again in the Gulf of Mexico for the first time since it was originally described 45 years ago. New morphological information based on the development of Deutella mayeri and a redescription of Metaprotella hummelincki are also provided, along with a key for species identification and zoogeographical comments at the regional and global scales.