original description
Marshall, W. B. (1934). Two new species of pearly fresh-water mussels. <em>Journal of the Washington Academy of Sciences.</em> 24(2): 78-81., available online at https://www.biodiversitylibrary.org/page/39918464
page(s): 80-81, figs 4-6 [details]
source of synonymy
Simone, L. R. L. (2006). <i>Land and Freshwater Molluscs of Brazil</i>. Editora Grafíca Bernardi, FAPESP. São Paulo, 390 pp. [details]
From editor or global species database
Type locality Tubicuary River at Aroja in southern Paraguay [...]. The Tubicuary River is a tributary of the Paraguay about 65 miles above its confluence with the Parana and hence is in the La Plata system. [details]