basis of recordMartens, E. von. (1882). Über centralasiatische Mollusken. <em>Mémoires de l'Académie Impériale des Sciences de St. Pétersbourg, series 7.</em> 30 (11): 1-65. St. Petersburg., available online athttps://biodiversitylibrary.org/page/46871758 page(s): 40, pl. 4 fig. 11 [details]