46. Bombus (Melanobombus) pyrosoma Morawitz

(Fig. 49)

Bombus pyrosoma Morawitz, 1890:349, syntype queen ZISP examined. China: ‘Kan-ssu’, probably Qinghai.

Bombus pyrrhosoma Dalla Torre, 1896:544, unjustified emendation.

Bombus rufus Friese, 1905:511 (not of Villers, 1789:328 = B. pascuorum), type not seen. Synonymised with Bombus pyrrhosoma Morawitz [sic] by Skorikov ([1923]). China: Sichuan.

Pyrobombus (Lapidariobombus) wutaishanensis Tkalců, 1968:39, holotype queen MNHU examined. Synonymised with Bombus pyrosoma Morawitz by Williams (1991). China: Shanxi.

Material examined. 5 queens 1495 workers 150 males (IAB).

Distribution in Gansu. Abundant at low to medium elevations of the southeastern mountains and eastern loess plateau, common at medium elevations of the western mountains and Qinghai-Tibetan plateau in the southwest, rare at low elevations of the southern mountains and high elevations of the northwestern Qilianshan mountains (Fig. 49); 76 localities between 719 and 4011 m (IAB).

Distribution in China. Beijing, Tianjin, Hebei, Shanxi, Neimenggu, Liaoning, Henan, Chongqing, Sichuan, Shaanxi, Gansu, Qinghai, Ningxia (IAB).

Forage plants. ALLIACEAE: Allium chrysanthum, ASTERACEAE: Anaphalis margaritacea, Arctium lappa, Aster tataricus, Carduus crispus, Cirsium leo, C. monocephalum, C. setosum, Cosmos bipinnatus, Dahlia pinnata, Helianthus annuus, Leontopodium longifolium, Ligularia przewalskii, Ligularia sp., Saussurea japonica, S. stella, Saussurea sp., Senecio jacobaea, Sinacalia tangutica, Stemmacantha uniflora, Tagetes patula; BUDDLEJACEAE: Buddleja officinalis; CAMPANULACEAE: Adenophora sp.; CLUSIACEAE: Hypericum ascyron, H. perforatum; CON- VOLVULACEAE: Calystegia hederacea, Pharbitis nil; CUCURBITACEAE: Thladiantha dubia; FABACEAE: Astragalus bhotanensis, A. dahuricus, Astragalus sp., Lathyrus pratensis, Lespedeza bicolor, L. floribunda, Melilotus albus, M. officinalis, Oxytropis ochrocephala, Trifolium repens, Vicia cracca, V. un ij ug a; GENTIANACEAE: Halenia elliptica; GERANIACEAE: Geranium pratense; HYDRANGEACEAE: Hydrangea macrophylla; LAMIACEAE: Caryopteris divaricata, C. incana, C. tangutica, Dracocephalum heterophyllum, Lamium album, L. barbatum, Leonurus Artemisia, Mentha haplocalyx, Nepeta prattii, Phlomis umbrosa, Phlomis sp., Salvia przewalskii, S. roborowskii, Salvia sp., Thymus mongolicus, Vitex negundo; LILIACEAE: Lilium brownii; MALVACEAE: Althaea rosea; ONAGRACEAE: Epilobium angustifolium; PAPAVERACEAE: Corydalis sp.; RANUNCULACEAE: Aconitum gymnandrum, Aconitum sp., Anemone tomentosa, Clematis tangutica; SCROPHULARIACEAE: Pedicularis spicata, P. to r t a, Pedicularis sp.; THYMELAEACEAE: Wikstroemia chamaedaphne .