Pycnisia raptor, a new genus and species of predatory troglobic shrimp (Crustacea : Decapoda : Atyidae) from northern Australia

Abstract

Pycnisia raptor, gen. et sp. nov., a new predatory troglobic atyid shrimp from a limestone cave near Katherine, Northern Territory, Australia, is described and illustrated. The shrimp is immediately distinguishable from all other atyids by the presence of robust, raptorial ambulatory pereiopods. The troglobic atyid fauna of Australia is reviewed and a key provided for the identification of the six species of four genera presently known.