Fig. 1.

Position of sampling localities in southern Mongolia. Numbers of ranges refer to Table 1; the question mark indicates the site Edrengiyn Nuruu, where both species had previously been recorded (Grubov, 2001) but were not found in this study. Dotted lines demarcate the nature reserves (Great Gobi ‘A’ and ‘B’ Special Protected Areas, Gobi Gurvan Saykhan National Park) in the region.