50. Bombus (Sibiricobombus) sibiricus (Fabricius)

(Fig. 53)

Apis ʃ ibirica [sibirica] Fabricius, 1781:478, type not seen. Russia: ‘Sibiria’.

Material examined. 1 queen 67 workers 11 males (IAB).

Distribution in Gansu. Common at low to medium elevations of the eastern loess plateau, western mountains, rare at medium elevations of the northwestern Qilianshan mountains (Fig. 53); 10 localities between 1161 and 2604 m (IAB).

Distribution in China. Hebei, Neimenggu, Shaanxi, Gansu, Ningxia, Xinjiang (IAB).

Forage plants. ASTERACEAE: Carduus crispus, Cirsium setosum, Cosmos bipinnatus, Olgaea tangutica; FABACEAE: Astragalus adsurgens, Hedysarum tanguticum; LAMIACEAE: Leonurus Artemisia .