TitleDescription of a New Genus with Two New Species of Freshwater Crab (Decapoda: Brachyura: Gecarcinucidae) from the Southwestern Ghats, India.
Publication TypeJournal Article
Year of Publication2021
AuthorsRaj S, Kumar ABiju, Ng PKL
JournalZool Stud
Date Published2021

A new genus of freshwater crab, gen. nov., and two species, sp. nov. (type species) and sp. nov., are described from the Kerala part of the Western Ghats biodiversity hotspot, India. The new genus is superficially similar to and from the same hotspot, but can easily be distinguished by the following suite of carapace and gonopod characters: an inflated carapace with distinct epigastric and postorbital cristae; the third maxilliped exopod has a long flagellum; male sternites 2 and 3 separated by a shallow median groove while sternites 3 and 4 are completely fused, demarcated by shallow oblique grooves; a male first gonopod that is almost straight with a short distal conical distal segment; and a male second gonopod that is as long as the first gonopod with a long and slender distal segment. The two new species can be differentiated from each other by the lateral margins of male pleonal somite 6 and the structure of the male first gonopod.

Alternate JournalZool Stud
PubMed ID34630721
PubMed Central IDPMC8473675