On a remarkable new stenopodid shrimp (Decapoda: Stenopodidea) from the bathyal depths of the tropical western Atlantic

A morphologically very distinctive new species of stenopodidean shrimp collected by ROV at a depth of 497.57 m between the islands of Puerto Rico and Hispaniola is tentatively assigned to the genus Richardina A. Milne-Edwards, 1881. The diagnosis of Richardina is significantly emended to include several novel features of the new species, most notably, the reduction of teeth on the dorsal rostral carina and absence of pleurobranchs on the body wall above the first to fifth pereiopods.

The holotype and single specimen of Richardina taina sp. nov. was collected together with a tunicate, Ascidia sp., and a small sponge of the family Raspailiidae.