caspicus, Agnathomyzon (Haploglossa) Gratzianov [V. I.] 1907:18 [Dnevnik' Zoologicheskogo Otdelenya Obshchestva Lyubiteley Estestvoznaniya, Antropologii i Etnografii, Moskva v. 3 (no. 7-8) (for Dec. 1906); ref. 1870] Kura River near Evlakh, Volga River near Kazan, and Moskva River (Royllier), Russia. No types known. Type catalog: Vasil'eva et al. 2001:11 [ref. 25714]. Also appeared as new in Gratzianow 1907:13 [ref. 1871]. •Synonym of Caspiomyzon wagneri (Kessler 1870) -- (Holčík 1986:120 [ref. 24819], Reshetnikov 1998:15 [ref. 23570], Renaud 2011:24 [ref. 31770], Jouladeh-Roudbar et al. 2020:6 [ref. 37983], Çiçek et al. 2024:24 [ref. 40789]). Current status: Synonym of Caspiomyzon wagneri (Kessler 1870). Petromyzontidae. Habitat: freshwater, brackish, marine.