Notes on Cyclestheria hislopi (Baird) (Crustacea: Conchostraca) found in Argentina

Abstract

Cyclestheria hislopi (Baird) is found for the first time in Argentina, near the Parana river. Some ecological data obtained at the collecting site are given. C. Sarsiana Thiele is considered a synonym of C. hislopi (Baird). Its pantropical distribution is supoposed to be a relict of a more continuous Gondwana distribution, on the basis of fossil record, Like in other cases, no males have been found.