52. Bombus (Pyrobombus) infirmus (Tkalců)

(Figs 106, 107)

Pyrobombus (Pyrobombus) infirmus Tkalců, 1968:24 .

Material examined. 1 male (IAB).

Distribution in North China. Only in the Qinling mountains. Rare at medium elevations of the Taibai nature reserve in southern Shaanxi. 1 locality (Fig. 106) at 2556 m (IAB). Distribution in China. Sichuan, Xizang, Shaanxi (IAB). Forage plants. No records.