Abstract
The taxonomy of the amphipod family Leucothoidae has been reviewed and changes are proposed. Currently, there are 139 described species of leucothoids in two clades. The anamixid clade contains 39 species and the leucothoid clade contains 100 species.For the first time in a single work, diagnoses, distributions, and available host data are presented for all extant species of the Leucothoidae. The genus Leucothoella has been suppressed based on morphological similarities to the genus Leucothoe. The genera Anamixis and Paranamixis need revision, as the major defining character of Paranamixis (absence of gnathopod 1) is likely developmental. However, due to lack of available data, the genera currently remain separate. Identification keys are providedfor all but five poorly described species in the family.
NSTL