Bombus (Pyrobombus) hypnorum (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 : 54

49. Bombus (Pyrobombus) hypnorum (Linnaeus)

( Figs 100, 101 )

APIS Hypnorum Linnaeus, 1758:579 . Bombus calidus Erichson, 1851:65 .

Taxonomy. For a discussion of the taxonomy of this species see Williams et al.(2009).

Material examined. 17 queens, 35 workers, 51 males (IAB).

Distribution in North China. Primarily in the west Qinling mountains and the Zhongtiaoshan mountains. Common at medium elevations of the Maijishan forest park, the Xiaolongshan nature reserve, the Liancheng nature reserve in Gansu. Rare at medium elevations of the Baishuijiang nature reserve and the Lianhuashan nature reserve in Gansu, at medium elevations of the Liupanshan nature reserve in southern Ningxia, at medium elevations of the Huashan park in Shaanxi, at low to medium elevations of the Wulaofeng nature reserve, and the Lishan nature reserve in southern Shanxi. 18 localities ( Fig. 100 ) between 780–2923 m (IAB).

Similar species in North China. This species is similar in its brown colour pattern with a white tail to B. consobrinus and workers of B. festivus (see the key; Figs 37 , 101 , 143 ).

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

Forage plants. ASTERACEAE : Carduus acanthoides , Cirsium japonicum , Ligularia sp., Parasenecio roborowskii , Stemmacantha uniflora ; APIACEAE : Angelica sp.; BUDDLEJACEAE : Buddleja officinalis ; CAPRIFOLIACEAE : Lonicera elisae ; FABACEAE : Oxytropis ochrocephala , Piptanthus concolor ; LAMIACEAE : Nepeta prattii , Thymus mongolicus , Salvia przewalskii , Salvia sp., Scutellaria scordiifolia ; ONAGRACEAE : Chamerion angustifolium ; ROSACEAE : Cerasus campanulata , Amygdalus davidiana , A. persica , Cerasus tomentosa .

Figures

FIGURES 100 – 101. 100. Map showing the distribution of B. hypnorum 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. 101. B. hypnorum worker visiting Ligularia sp. (Asteraceae) in Gansu.

FIGURES 36 – 37. 36. Map showing the distribution of B. consobrinus 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. 37. B. consobrinus woker visiting Aconitum barbatum (Ranunculaceae) in Hebei.

FIGURES 142 – 143. 142. Map showing the distribution of B. festivus 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. 143. B. festivus worker visiting Alcea rosea (Malvaceae) in Gansu.