Spermophilus (Spermophilus) pallidicauda Satunin 1903

Spermophilus (Spermophilus) pallidicauda Satunin 1903, Ezhegodnik Zoologicheskii Muzeya, Akademii Nauk, St. Petersburg, 7: 5-6.

Type Locality: "vicinity of Lake Khulu-Nur", Ullyn Bulyk, Baidarak river, Mongolian Atlai. Mongolia, Gobi Altai.

Vernacular Names: Pallid Ground Squirrel.

Distribution: This monotypic species is endemic to Mongolia and the adjacent Nei Mongol Autonomous Region (Inner Mongolia).

Discussion: Subgenus Spermophilus (Gromov et al., 1965) . In addition to constant morphological differences, it also differs in chromosome number and molecular sequence from major and erythrogenys, in which it was previously placed (Corbet, 1978 c; Sokolov and Orlov, 1980), having a sister species relationship with alashanicus (Harrison et al., 2003) .