kessleri, Diptychus Russki [M.] 1888:796, Pl. 29 [Zoologische Jahrbücher, Abteilung für Systematik, Geographie und Biologie der Tiere (Jena) v. 3; ref. 19642] Tschirtschik [Chirchik] River; Syrdarja River, southwestern central Asia. Syntypes: whereabouts unknown. •Synonym of Diptychus dybowskii Kessler 1874 -- (Berg 1949:727 [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.