A new species of tree-hole dwelling freshwater crab of the genus Arachnothelphusa Ng, 1991 (Crustacea: Decapoda: Brachyura: Gecarcinucidae) from northern Sarawak, Malaysia, Borneo
A new species of tree-hole gecarcinucid freshwater crab, Arachnothelphusa merarapensis, is described
from a primary dipterocarp forest near Merarap Hot Spring Resort in Lawas, northern Sarawak, Malaysia. This
brings the number of species in the genus Arachnothelphusa found in Borneo to five, and it is likely that more
species will be discovered from this island. The new species has preference for living in water-filled tree-holes,
which is the first record of a tree-hole crab for Southeast Asia. The habitat characteristics and distribution of this
new species are also discussed