After McKenna & Bell, 1997
Spermophilus F. Cuvier, 1825 Citellus Oken, 1816 Spermatophilus Wagler, 1830 Mamspermophilus Herrera, 1899 including: Citillus Lichtenstein, 1827 Otospermophilus Brandt, 1844 Otocolobus Brandt, 1844, non Felis (Otocolobus) Brandt, 1841, a subgenus of cats Colobotis Brandt, 1844 Colobates Milne-Edwards, 1874 [objective synonym of Colobotis Brandt, 1844] Ictidomys Allen, 1877 Xerospermophilus Merriam, 1892 Callospermophilus Merriam, 1897 Ictidomoides Mearns, 1907 Urocitellus Obolensky, 1927 Poliocitellus H. Howell, 1938 Notocitellus A.H. Howell, 1938 †Pliocitellus Hibbard, 1942
Reference(s):
- McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631