A new species of pontoniine shrimp, Periclimenes mclaughlinae n. sp., is described and illustrated on the basis of seven specimens collected from shallow water in the Cebu Strait, Philippines. Periclimenes mclaughlinae n. sp. is associated with the cidarid sea urchin Phyllacanthus imperialis. It differs from all other Periclimenes Costa, 1844 species in having a distolateral, broad, rounded, downward curved lobe on the exopod of the uropod.
Crustacea, Decapoda, Palaemonidae, Pontoniinae, Echinoidea, Philippines, new species.