MolluscaBase name details
original description
Pilsbry, H. A. (1935). South American land and freshwater mollusks. 9. Colombian species. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 87: 83-88.
page(s): 85; note: As Drymaeus tusagasuganus Pilsbry, 1935 (see Pilsbry, 1937: 33) [details]
additional source
Pilsbry, H. A. (1937). A correction - <i>Drymaeus fusagasuganus</i>. <em>The Nautilus.</em> 51(1): 33., available online at https://www.biodiversitylibrary.org/page/9203226 [details]