30. Bombus (Pyrobombus) hypnorum (Linnaeus) s. l.

(Fig. 33)

APIS Hypnorum Linnaeus, 1758:579, lectotype queen (Day, 1979:64) LSL examined. Sweden. Bombus calidus Erichson, 1851:65, type not seen. Regarded as conspecific with Bombus hypnorum (Linnaeus) by Schmiedeknecht (1883). Russia: Khabarovskiy Kray.

Bombus hypnorum var. calidus Erichson; Morawitz, 1890:349. China: ‘Sse-tschuan’, probably Qinghai. Taxonomy: for a discussion of the taxonomy of this species see Williams et al. (2009).

Material examined. 7 queens 26 workers 23 males (IAB).

Distribution in Gansu. Common at low to medium elevations of the southeastern and western mountains, rare at medium elevations of the Qinghai-Tibetan plateau in the southwest (Fig. 33); 9 localities between 1049 and 2923 m (IAB).

Distribution in China. Shanxi, Jilin, Chongqing, Sichuan, Yunnan, Xizang, Gansu, Qinghai (IAB).

Forage plants. ASTERACEAE: Carduus crispus, Cirsium japonicum, Ligularia sp., Parasenecio roborowskii, Stemmacantha uniflora; APIACEAE: Angelica sp.; FABACEAE: Oxytropis ochrocephala; LAMIACEAE: Nepeta prattii, Thymus mongolicus, Salvia przewalskii, Salvia sp., Scutellaria scordiifolia; ONAGRACEAE: Epilobium angustifolium .