Traits name details
original description
Thiele, J. (1933). Die von Oskar Neumann in Abessinien gesammelten und einige andere afrikanische Landschnecken. Sitzungs-Berichte der Gesellschaft Naturforschender Freunde zu Berlin, 134: 280-323, pl. 1-2. Berlin. page(s): 288, fig. 5. [details] Available for editors 
basis of record
Adam, W.; Bruggen, A. C. van; Van Goethem, J. L. (1994). Études sur les mollusques terrestres de l'Afrique, à partir des notes de feu le Dr William Adam. 2. <i>Ptychotrema</i> (<i>Ennea</i>) H. & A. Adams, 1855 (Gastropoda Pulmonata: Streptaxidae). <em>Bulletin de l'Institute Royal des Sciences Naturelles de Belgique, Biologie.</em> 64: 71-97., available online at https://biblio.naturalsciences.be/rbins-publications/bulletin-of-the-royal-belgian-institute-of-natural-sciences-biologie/64-1994/biologie-1994-64_71-97.pdf page(s): 82 [details]
additional source
Bacci, G. (1951). Elementi per una malacofauna dell'Abissinia e della Somalia. Annali del Museo Civico di Storia Naturale Giacomo Doria, 65: 1-145. Genova. page(s): 100. [details] Available for editors 
additional source
Brown, K. (2023). A guide to the hunter shells. Vol. 2. The Streptaxoidea. The Enneinae, Orthogibbinae, Marconiinae, Odontartemoninae, Streptaxinae and the Diapheridae. ConchBooks, Germany. page(s): 117 [details]
additional source
Tattersfield, P. (2025). <i>Ptychotrema</i> (Gastropoda: Streptaxidae) in north-east Africa: thirteen new species from Ethiopia reveal the presence of a diverse but little-known fauna. <em>Journal of Conchology.</em> 45(3): 520-558., available online at http://dx.doi.org/10.61733/jconch/4545 page(s): 549, fig. 9D [details] Available for editors 
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