Marmota baibacina Kastschenko, 1899. Rezul't. Altaisk. Zool. Exp. 1898, p. 62. TYPE LOCALITY: "...Multa River, near Nizhne-Uimon in the Altai Mountains" [Altaisk. Krai, Russia] (Ognev, 1963a: 252). Alternatively, Aktol' River near Cherga, Gorno-Altaisk. A.O. (Kuznetsov, in Ellerman and Morrison-Scott, 1951:514). DISTRIBUTION: Altai Mtns, SW Siberia (Russia), SE Kazakhstan, Kirgizistan; Mongolia; Xinjiang (China). Introduced into Caucasus Mtns (Dagestan, Russia; Gromov et al., 1965:360). SYNONYMS: aphanasievi Kuznetsov, 1965; centralis (Thomas, 1909); kastschenkoi Stroganov and Yudin, 1956; lewisi (Audubon and Bachman, 1854); ognevi Scalon, 1950. COMMENTS: Placed by Ellerman and Morrison-Scott (1951:514) in marmota, and by Corbet (1978c:81) in bobak; Kapitonov (1966) analyzed purported hybridization between baibacina and bobak, while Nikol'skii (1974) and Nikol'skii et al. (1983) found speciesspecific vocalizations. Most Russian authors retain both as distinct species (Gromov et al., 1965:337-387; Zimina, 1978; Zholnerovskaya et al., 1990) and include centralis in this species. Kapitonov (1966) indicated that the population called aphanasievi is included in this species; but also see Corbet (1978c:81). Includes lewisi, a nomen oblitum (Hoffmann, 1977); baibacina (Brandt, 1843) is a nomen nudum. See also bobak, sibirica., Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on pages 430-431, DOI: 10.5281/zenodo.7353130, {"references":["Ognev, S. I. 1963 a. Mammals of the USSR and adjacent countries: Rodents (continued). (Mammals of eastern Europe and northern Asia) [A translation of S. I. Ognev, 1947, Zveri SSSR i prilezhashchikh stran: Gryzuny (prodolzhenie). (Zveri vostochnoi Evropy i severnoi Azii)]. Israel Program for Scientific Translations, Jerusalem, 5: 1 - 662.","Ellerman, J. R., and T. C. S. Morrison-Scott. 1951. Checklist of Palaearctic and Indian mammals 1758 to 1946. Trustees of the British Museum (Natural History), London, 810 pp.","Gromov, I. M., D. I. Bibikov, N. I. Kalabukhov, and M. N. N. Meier. 1965. Fauna SSSR, Mlekopitayushchie, tom. 3, vyp. 2 [Fauna of the U. S. S. R. Mammals. vol. 3, No. 2]. Nazemnye belich'e [Ground Squirrels]. Nauka, Moscow-Leningrad, 467 pp. (in Russian).","Kuznetsov, B. A. 1965. Ordo Rodentia. Pp. 236 - 346, in Opredelitel' mlekopitayushchikh SSSR [Guide to the mammals of the USSR] (Bobrinskii, N. A., Kuznetsov, B. A. and A. P. Kuzyakin, eds.). Second edition. Proveshchenie, Moscow, 382 pp. (in Russian).","Corbet, G. B. 1978 c. The mammals of the Palaearctic region: A taxonomic review. British Museum (Natural History), London, 314 pp.","Kapitonov, V. I. 1966. Rasprostranenie surkov v Tsentral'nom Kazakhstane i perspektivy ikh promysla [Distribution of marmots in Central Kazakhstan and perspectives on their utilization]. Trudy Zoologicheskovo Instituta, Akademiya Nauk, Kazakh SSR, 26: 94 - 134 (in Russian).","Nikol'skii, A. A. 1974. Geograficheskaya izmenchivost' ritmicheskoi organizatsii zvukovo signala surkov gruppy bobac (Rodentia, Sciuridae) [Geographic variation in rhythmic organization of sound signal in marmots of the bobac group ...]. Zoologicheskii Zhurnal, 53: 436 - 444 (in Russian).","Nikol'skii, A. A., I. Yu. Yanina, M. V. Rutovskaya, and N. A. Formozov. 1983. Izmenchivost' zvukovovo signala stepnovo i serovo surkov (Marmota bobac, M. baibacina; Sciuridae, Rodentia) v zone vtorichnovo kontakta [Variation in sound signal of steppe and gray marmots ... in a zone of secondary contact]. Zoologicheskii Zhurnal, 62: 1258 - 1266 (in Russian).","Zimina, R. P. (ed.). 1978. Surki. Rasprostranenie i ekologiya [Marmots. distribution and ecology]. Nauka, Moscow, 222 pp. (in Russian).","Zholnerovskaya, E. I., D. I. Bibikov, and V. I. Ermolaev. 1990. Immunogeneticheskii analiz sistematicheskikh vzaimootnoshenii surkov [Immunogenetic analysis of systematic relationships of marmots]. Byulleten' Moskovskovo Obshchestva Ispytatelei Prirody, Otdel Biologicheskii, 195: 15 - 24 (in Russian).","Hoffmann, R. S. 1977. The identity of Lewis' marmot, Arctomys lewisii. Proceedings of the Biological Society of Washington, 90: 291 - 301."]}