Pictorial key for identification of bivalves of the lower River Aripuanã, Amazonas, Brazil, (Sphaeriidae, Hyriidae and Mycetopodidae)

Starting from freshwater mussels sampled mainly during low water seasons of 2004 and 2007, on the lower Aripunã River, a tributary from Madeira River, from the Amazon Basin, a pictorial key for the species identification is presented. Eleven taxa, ten to species level, were identified.

pictorial key; Mollusca; Bivalvia; Aripuanã River; Amazon