A range extension for the freshwater crayfish Geocharax tasmanicus (Erichson), with notes on its conservation status and specific name

摘要

Tasmania supports a diverse fauna of freshwater crayfish, forming, with SE mainland Australia, the world's second most important hotspot for freshwater crayfish diversity. Thirty four native Tasmanian species are currently recognised in 5 genera (Astacopsis, Engaeus, Geocharax, Ombrastacoides and Spinastacoides), plus one non-native species, the yabby Cherax destructor, which has been introduced to several parts of the State. All but three of the native species are endemic to Tasmania. Engaeus cunicularius and E. laevis are shared with southern Victoria, and Geocharax tasmanicus also extends into the Otway region of Victoria.