A taxonomic revision of species in the freshwater crayfish genus Engaeus Erichson (Decapoda : Parastacidae)

Abstract

In a revision of the species in the genus Engaeus, the number of species is increased to thirty-four, resulting from the addition of fourteen new species, nine of them endemic to Tasmania (E. disjuncticus, E. granulatus, E. lengana, E. mairener, E. martigener, E. nulloporius, E. orramakunna, E, spinicaudatus and E. tayatea), and five endemic to Victoria (E. curvisuturus, E. karnanga, E. mallacoota, E. merosetosus and E. rostrogaleatus). Four species have been synonymised: E. jumbunna with E. hemicirratulus, E. connectus with E. tuberculatus, E. marmoratus with E. quadrimanus, and E. parvulus with E. cymus. A key to species is provided. For all species are given synonymies, a diagnosis, a discussion of morphological variation, notes on life histories and general ecology, and distribution.