original description
(of Thaumastus alausiensis Cousin, 1887) Cousin, A. (1887). Faune malacologique de la Republique de l'Équateur. <em>Bulletin de la Société zoologique de France.</em> 12: 187-287., available online at https://www.biodiversitylibrary.org/page/36024096
page(s): 228, pl. 4 fig. 13 [details]
basis of record
Breure, A. S. H., Roosen, M. T. & Ablett, J. D. (2022). Land and freshwater molluscs of mainland Ecuador: an illustrated checklist. <em>Iberus.</em> 40(1): 1-290.
page(s): 148, figs. 195A-B, 197 [details]
From editor or global species database