basis of record
Simone, L. R. L. (2006). <i>Land and Freshwater Molluscs of Brazil</i>. Editora Grafíca Bernardi, FAPESP. São Paulo, 390 pp.
page(s): 186 [details]
From editor or global species database
Editor's comment there is no species "orysa" described by Bruguiere, 1789. Therefore, the origin and validity of this name as used by Simone (2007) remains uncertain [details]