Atyid shrimps from lake Poso, Central Sulawesi, Indonesia with description of a new species (Crustacea:Decapoda:Caridea)

The taxonomy of the freshwater shrimps of the Family Atyidae from Lake Poso, central Sulawesi, is revised on the basis of type material and fresh collections. Caridina sarasinorum Schenkel, 1902, and C ensifera Schenkel, 1902, are redescribed in detail and lectotypes for both species are designated. Caridina acutirostris Schenkel, 1902, which was originally described based on a single female specimen, was not found during recent field collections. One new species, C. longidigita, is also described. Four species of Caridina are now known from Lake Poso.