original description
Pilsbry, H. A. (1944). Molluscan Fossils from the Rio Pachitea and Vicinity in Eastern Peru. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 96: 137-153.
page(s): 145, pl. 11, figs 31-32 [details]
From editor or global species database
Type locality Collecting station 161, on the Pachitea River, about one mile upstream from the Quebrada Sungarillo (Peru) [details]