11. Bombus (Megabombus) ussurensis Radoszkowski

(Figs 24, 25)

Bombus Ussurensis Radoszkowski, 1877:196 .

Material examined. 40 workers, 14 males (IAB).

Distribution in North China. Common at low elevations of the Bashang plateau in northern Hebei, and low elevations of the Nenjiang river valley within northeastern Neimenggu. Rare at low elevations of the transition zone from the south Taihangshan mountains to western Hebei plain, medium elevations of the Huangangliang forest park of the south Great Khingan mountains in Neimenggu, and low elevations of the east Hulunbeir grassland in Yakeshi, Neimenggu. 15 localities (Fig. 24) between 215–1779 m (IAB).

Distribution in China. Hebei, Neimenggu, Jilin, Heilongjiang (IAB).

Forage plants. ASTERACEAE: Cosmos bipinnatus, Helianthus annuus; LAMIACEAE: Leonurus sibiricus .