Theodoxus altenai Schütt, 1965. A–C. Holotype from Lake Kırkgöz, Döşemealtı, Antalya, Turkey (RNL V.56/1, NMNL). D–G. Topotype (UGSB 24167) incorporated into the phylogeny (Fig. 2). Scale bars: 1 mm.

 
 
  Part of: Sands AF, Glöer P, Gürlek ME, Albrecht C, Neubauer TA (2020) A revision of the extant species of Theodoxus (Gastropoda, Neritidae) in Asia, with the description of three new species. Zoosystematics and Evolution 96(1): 25-66. https://doi.org/10.3897/zse.96.48312