Contusarma Schubart & Ng, 2020

Ng, Peter K. L., , Martyn E. Y. Low, Clark, & Paul F., 2022, Historical notes on various collectors of unidentified freshwater crabs (Crustacea: Decapoda: Brachyura) from the Malay Peninsula and Borneo, with descriptions of two new species of Isolapotamon Bott, 1968 Potamidae), Raffles Bulletin of Zoology 70, pp. 550-571 : 566

Genus Contusarma Schubart & Ng, 2020

Type species. Sesarma bocourti A. Milne-Edwards, 1869 .

Remarks. Schubart & Ng (2020) revised the systematics of mangrove and freshwater species associated with Pseudosesarma Serène & Soh, 1970 , and several other East and Southeast Asian genera, and transferred many to new genera. Two distinctive species often found in back mangroves and peat swamps were referred to Contusarma . The most distinctive feature of members of this genus is the flattened outer surfaces of the chelae in both sexes. This feature is distinct in adults but still discernible in subadults.