Erebonectes macrochaetus was collected from two anchialine caves on Caicos Islands. This is the second species of the genus, and considerably smaller than its congener only known from caves in Bermuda. The most pronounced morphological differences between the two species are found in the furcal setae, mandible, first leg, and the fifth legs of the male. In E. macrochaetus one furcal seta on left side is extremely elongated, the endopod of mandible is reduced, and in first leg the first segment of endopod has an elongated process on its outer distal corner.