Crustacean subfossils from the Jambusan Caves in Bau (Sarawak), collected by the late A.H. Everett are assigned to two relatively large species of potamid freshwater crabs (Brachyura) that are still extant in the area, viz. Isolapotamon bauense Ng, 1987 and I. consobrinum (De Man, 1899). While I. bauense is known to occur naturally in the caves, I. consobrinum is a primarily riverine species. On the basis of the available archaeological evidence, the two species were probably collected for food by early human inhabitants of Sarawak. Characters that are useful to identify the chelae and fingers of Bornean freshwater crabs are also discussed.

Potamidae, Isolapotamon, taxonomy, Everett Collection
Scripta Geologica

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Naturalis journals & series

Ng, P.K.L, & of Cranbrook, Earl. (2014). [Proceedings of the 5th Symposium on Mesozoic and Cenozoic Decapod Crustaceans, Krakow, Poland, 2013: A tribute to Pál Mihály Müller / R.H.B. Fraaije, M. Hyžný, J.W.M. Jagt, M. Krobicki & B.W.M. van Bakel (eds.)]: Fossil brachyuran crabs from the Jambusan Caves (Bau, Sarawak), collected by A.H. Everett in 1878-1879. Scripta Geologica, 147, 289–307.