A new Caribbean species, Chevalia carpenteri is described; heretofore only one species of the genus was known, but we have examined material that suggests morphs may represent distinct species or subspecies. We report C. mexicana and extend its range from the northern Gulf of Mexico to Belize. Our new species differs from the world complex of C. aviculae morphs in the ovate article 2 of pereopods 5-7 and the posteriorly flat epimera with large notches
