A new species of pontoniine shrimp, Epipontonia tahitiensis n. sp., from Tahiti, French Polynesia, is described and illustrated. The new species is readily distinguished from the three other species of the genus by the presence of a well developed incisor process on the mandible and an epipod on the second maxilliped, features that require a modification of the generic diagnosis. The species is one of the smallest pontoniine shrimps known and its host, presumed to be a sponge, has not been identified.
Crustacea, Decapoda, Pontoniinae, Epipontonia tahitiensis n. sp., French Polynesia, Tahiti, identification key, new species.