Caridina bruneiana, a new species of freshwater shrimp (Decapoda, Caridea, Atyidae) from Negara Brunei Darussalam, Borneo

A new species of the freshwater atyid shrimp, Caridina bruneiana from Negara Brunei Darussalam, Borneo is described. Caridina bruneiana is characterized by its moderately long and deep rostrum, pereiopod shape, spination and segmental ratios, the shape and spination of its posterior telsonic margin, egg size and the presence of an appendix interna on the endopod of the first male pleopod. The distribution of atyid shrimps in forested streams and their possible use as bioindicators of stream water quality in tropical rainforests are briefly discussed.