37. Bombus (Bombus) ignitus Smith (Fig. 40) Bombus ignitus Smith, 1869:207, holotype queen BMNH examined. Japan. Material examined. 32 queens 388 workers 198 males (IAB). Distribution in Gansu. Abundant at low to medium elevations of the southeastern mountains and eastern loess plateau, common at low elevations of the southern mountains, rare at high elevations of the Qinghai-Tibetan plateau in the southwest (Fig. 40); 37 localities between 719 and 3432 m (IAB). Distribution in China. Beijing, Tianjin, Hebei, Shanxi, Liaoning, Jilin, Henan, Sichuan, Yunnan, Shaanxi, Gansu, Qinghai (IAB). Forage plants. ALLIACEAE: Allium fistulosum; APIACEAE: Foeniculum vulgare; ASTERACEAE: Arctium lappa, Cirsium monocephalum, Cosmos bipinnatus, Dahlia pinnata, Helianthus annuus, Tagetes patula; BUDDLEJACEAE: Buddleja officinalis; CONVOLVULACEAE: Convolvulus arvensis, Pharbitis nil; CUCURBITACEAE: Cucumis sativus, Thladiantha dubia; FABACEAE: Lespedeza bicolor, Vicia cracca; LAMIACEAE: Caryopteris divaricata, Leonurus Artemisia, Phlomis umbrosa, Stachys sieboldii, Vitex negundo; MALVACEAE: Althaea rosea, Malva sinensis; OLEACEAE: Ligustrum lucidum; ONAGRACEAE: Oenothera biennis; PAPAVERACEAE: Corydalis sp., Dicranostigma leptopodum, Macleaya microcarpa; RANUNCULACEAE: Anemone tomentosa; ROSACEAE: Rosa filipes; SOLAN- ACEAE: Capsicum annuum, Solanum melongena; THYMELAEACEAE: Wikstroemia chamaedaphne.

Published as part of An, Jiandong, Williams, Paul H., Zhou, Bingfeng, Miao, Zhengying & Qi, Wenzhong, 2011, The bumblebees of Gansu, Northwest China (Hymenoptera, Apidae), pp. 1-36 in Zootaxa 2865 on page 19, DOI: 10.5281/zenodo.204407