original description
(of Physa scalaris Dunker, 1845) Dunker, W. (1845-1846). Diagnoses Molluscorum quorundam novorum, quae ex itinere ad oras Africae occidentalis reportavit cl. G. Tams, Med. Dr. <em>Zeitschrift für Malakozoologie.</em> 1845: 163-168; 1846: 24-28., available online at http://biodiversitylibrary.org/page/16291751
page(s): 164 [details]
original description
(of Pyrgophysa nyangweensis Putzeys, 1898) Putzeys S. (1898). Diagnoses de quelques coquilles et d'un genre nouveau provenant de l'état indépendant du Congo. <em>Bulletin des Séances de la Société Royal Malacologique de Belgique.</em> 27: IV-VI [published 12 February 1898]., available online at https://www.biodiversitylibrary.org/page/41174423
page(s): VI [details]
basis of record
Brown, D. S.; Curtis, B. A.; Bethune, S.; Appleton, C. C. (1992). Freshwater snails of East Caprivi and the lower Okavango River Basin in Namibia and Botswana. <em>Hydrobiologia.</em> 246(1): 9-40., available online at https://doi.org/10.1007/bf00005620
page(s): 30 [details] Available for editors [request]
additional source
Brown D. S. (1994). <i>Freshwater snails of Africa and their medical importance</i>, revised 2nd edition. London: Taylor & Francis. pp. i-x, 1-607.
page(s): 252 [details] Available for editors [request]
From editor or global species database
Type locality Angola, lakes and swamps in the vicinities of Benguela [details]