Bombus (Thoracobombus) muscorum (Linnaeus)

An, Jiandong, Huang, Jiaxing, Shao, Youquan, Zhang, Shiwen, Wang, Biao, Liu, Xinyu, Wu, Jie & Williams, Paul H., 2014, The bumblebees of North China (Apidae, Bombus Latreille), Zootaxa 3830 (1), pp. 1-89 : 35-36

21. Bombus (Thoracobombus) muscorum (Linnaeus)

( Figs 44, 45 )

Apis Mucorum [ muscorum ] Linnaeus, 1758:579 .

Material examined. 1 worker, 2 males (IAB).

Distribution in North China. Rare at low elevations of the Hulunbeir grasslands and the Nenjiang river valley in northeastern Neimenggu. 3 localities ( Fig. 44 ) between 315–678 m (IAB).

Similar species in North China. This species is very similar in its orange-brown colour pattern to some B. laesus , B. tricornis and B. atripes (see the key; Figs 41 , 45 , 69 , 71 )

Distribution in China. Neimenggu, Heilongjiang, Xinjiang (IAB).

Forage plants. ASTERACEAE : Helianthus annuus ; ONAGRACEAE : Chamerion angustifolium .

Figures

FIGURES 44 – 45. 44. Map showing the distribution of B. muscorum in North China with records as black spots, the province boundaries in dark grey, and all sites with records of all bumblebee species in light grey. 45. B. muscorum worker visiting Onobrychis pulchella (Fabaceae) in Xinjiang.

FIGURES 40 – 41. 40. Map showing the distribution of B. laesus in North China with records as black spots, the province boundaries in dark grey, and all sites with records of all bumblebee species in light grey. 41. B. laesus worker from Neimenggu.

FIGURES 68 – 69. 68. Map showing the distribution of B. tricornis in North China with record as black spot, the province boundaries in dark grey, and all sites with records of all bumblebee species in light grey. 69. B. tricornis queen from Beijing.

FIGURES 70 – 71. 70. Map showing the distribution of B. atripes in North China with records as black spots, the province boundaries in dark grey, and all sites with records of all bumblebee species in light grey. 71. B. atripes worker visiting Aralia chinensis (Araliaceae) in Shaanxi.