MolluscaBase name details
original description
(of Ptychotrema walikalense Pilsbry, 1919) Pilsbry, H. A. (1919). A review of the land mollusks of the Belgian Congo chiefly based on the collections of the American Museum Congo Expedition, 1909-1915. <em>Bulletin of the American Museum of Natural History.</em> 40: 1-370, pls I-XXIII.
page(s): 203, fig. 72. [details]
basis of record
Adam, W.; Bruggen, A. C. van; Van Goethem, J. L. (1993). Études sur les mollusques terrestres de l'Afrique, à partir des notes de feu le Dr William Adam. 1. <i>Ptychotrema</i> (<i>Haplonepion</i>) Pilsbry, 1919 (Gastropoda Pulmonata: Streptaxidae). <em>Bulletin de l'Institute Royal des Sciences Naturelles de Belgique, Biologie.</em> 63: 137-157., available online at https://biblio.naturalsciences.be/rbins-publications/bulletin-of-the-royal-belgian-institute-of-natural-sciences-biologie/63-1993/biologie-1993-63_137-157.pdf
page(s): 148 [details]
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): 152 [details]