The bumblebees of North China (Apidae, Bombus Latreille) Author An, Jiandong Author Huang, Jiaxing Author Shao, Youquan Author Zhang, Shiwen Author Wang, Biao Author Liu, Xinyu Author Wu, Jie Author Williams, Paul H. text Zootaxa 2014 3830 1 1 89 journal article 36819 10.11646/zootaxa.3830.1.1 bee37b6c-7c93-4c85-a3e9-1733eb5acba8 1175-5326 286560 D1B92849-3D00-4C27-809E-15A3B50ECF19 52. Bombus ( Pyrobombus ) infirmus (Tkalců) ( Figs 106, 107 ) Pyrobombus (Pyrobombus) infirmus Tkalců, 1968 :24 . Material examined. 1 male (IAB). Distribution in North China . Only in the Qinling mountains. Rare at medium elevations of the Taibai nature reserve in southern Shaanxi. 1 locality ( Fig. 106 ) at 2556 m (IAB). Distribution in China . Sichuan, Xizang, Shaanxi (IAB). Forage plants. No records.