The genus <em>Anisancylus</em> Pilsbry, 1924 (Planorboidea, Ancylinae) in South America: species distribution and new records
Check List 13(4): 267-275, doi: 10.15560/13.4.267
The genus Anisancylus Pilsbry, 1924 (Planorboidea, Ancylinae) in South America: species distribution and new records
expand article infoXimena M. C. Ovando, Caroline S. Richau, Sonia B. Santos
‡ Universidade do Estado do Rio de Janeiro, Maracanã, Brazil
Open Access
Abstract
Information on the distribution of Anisancylus Pilsbry, 1924 in South America is provided. For first time, we recorded A. dutrae (Santos 1994) in Minas Gerais state and 2 new localities in northeastern Brazil. Anisancylus obliquus (Broderip & Sowerby, 1832) is widely distributed in Chile, Peru, central and southern Argentina, Uruguay and southern
Brazil while A. dutrae is restricted to Brazil. This freshwater genus shows a disjunct distribution in South America that could be explained by tectonics and evolution of the basins. To understand this peculiar distributional pattern, additional studies should be performed combining biogeographic and phylogeographic analyses.
Keywords
Mollusca; Gastropoda; freshwater snails; limpets; watersheds; Neotropical Region