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) Author Ng, Peter K. L. Author , Martyn E. Y. Low Author Clark, Author Paul F. text Raffles Bulletin of Zoology 2022 2022-12-12 70 550 571 journal article 10.26107/RBZ-2022-0031 2345-7600 13256876 633217F0-3D8F-478B-B300-5AABADEB3066 Genus Borneosa Ng & Grinang, 2022 Type species. Sundathelphusa tenebrosa Holthuis, 1979 . Remarks. Ng & Grinang (2022) revised the Bornean species previously referred to Sundathelphusa Bott, 1969 , and assigned them to a new genus, Borneosa , which they defined by a suite of carapace, male thoracic sternal and G1 characters. Seven species were recognised, with four being new. Sundathelphusa is now restricted to Sulawesi , the Moluccas , and the Philippines .