lansdelli, Diptychus Günther [A.] 1889:361 [Annals and Magazine of Natural History (Series 6) v. 3 (no. 16) (art. 42); ref. 18206] Issyk-Kul, Kyrgyzstan. Syntypes: BMNH 1888.12.14.18-21 (4). •Synonym of Diptychus dybowskii Kessler 1874 -- (Berg 1949:726 [ref. 20661], Tsao 1964:176 [ref. 13501]). •Synonym of Gymnodiptychus dybowskii (Kessler 1874) -- (Wu & Wu 1992:432 [ref. 21205], Chen & Cao et al. in Yue 2000:349 [ref. 25272]). Current status: Synonym of Gymnodiptychus dybowskii (Kessler 1874). Cyprinidae: Schizopygopsinae. Habitat: freshwater.