original description
(of Ptychotrema (Parennea) dykeanum Spence, 1923) Spence, G.C. (1923). Mollusca from the Belgian Congo (II). <em>Journal of Conchology.</em> 17: 19–24, pl. 1.
page(s): 20, pl. 1, fig. 6. [details]
source of synonymy
Adam, W.; Van Goethem, J. L. (1978). Revision du sous-genre Parennea Pilsbry du genre Ptychotrema Mörch (Mollusca-Pulmonata-Streptaxidae). <em>Études du Continent Africain.</em> 5: 1-79.
page(s): 39. [details] Available for editors [request]
source of synonymy
Bruggen, A. C. van. (1989). Studies on <i>Parennea</i> (Mollusca, Gastropoda Pulmonata: Streptaxidae) additional to the revision by Adam & Van Goethem, 1978. <em>Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen.</em> 92(1): 1–56.
page(s): 34-36 [details]
From editor or global species database