Abstract
Using materials of collection from nearly all the Argentinian provinces, a map of the distribution of the anostracans in Argentina has been elaborated. From the eight families recognized on a world scale, four are represented in the country; being the best represented considering the number of the species is the Branchinectidae one. New localities are mentioned for Branchinecta rocaen‐sis, Dendrocephalus cervicornis, D. brasiliensis, Phallocryptus salinicola and Anemia salina.