Fotos: (1) Natural History Museum, London: HOLOTYPE NHMUK 1939.4.17.226, Titicaca Expedition, 1937, 16.iv.1937, doador: Percy Sladen Memorial Trust
Fontes:
Descrição original: (como Bulimulus (Scutalus) quechuarum Crawford, 1939) Crawford, G. I. (1939). Report on the terrestrial Mollusca collected by the Percy Sladen Expedition to Lake Titicaca, 1937. Proceedings of the Malacological Society of London. 23(6): 318–332., disponível online em https://doi.org/10.1093/oxfordjournals.mollus.a064373
página(s): 330, pl. 19, figs 11-12