48. Bombus (Melanobombus) keriensis Morawitz

(Fig. 51)

Bombus keriensis Morawitz, 1887:199, syntype queen ZISP examined. China: Xinjiang.

Bombus separandus Vogt, 1909:61, lectotype queen (Williams, 1991:96) ZMA examined. Regarded as conspecific with Bombus keriensis Morawitz by Reinig (1935). China: Xinjiang.

Bombus kohli Vogt, 1909:61 (not of Cockerell, 1906:75 = B. morio (Swederus)), 3 syntype workers ZMA examined. Synonymised with Bombus keriensis Morawitz by Williams (1991). Mongolia.

Bombus kozlovi Skorikov, 1910b:413, replacement name for kohli Vogt, 1909:61 .

Bombus lapidarius var. tenellus Friese, 1913:86, type not seen. Synonymised provisionally with Bombus keriensis Morawitz by Williams (1991). Russia: Zapadnyy Sayan.

Bombus (Lapidariobombus) keriensis f. richardsi Reinig, 1935:341 (not of Frison, 1930:6 = B. rufipes Lepeletier), holotype queen ZMA examined. Pakistan.

Bombus (Melanobombus) tenellus ssp. tibetensis Wang, 1982:439, replacement name for richardsi Reinig, 1935:341.

Bombus (Melanobombus) trilineatus Wang, 1982:441, holotype queen IZB examined. Synonymised with Bombus keriensis Morawitz by Williams (1998). China: Xizang.

Material examined. 12 queens 109 workers 3 males (IAB).

Distribution in Gansu. Abundant at medium to high elevations of the northwestern Qilianshan mountains, rare at medium to high elevations of western mountains and Qinghai-Tibetan plateau in the southwest (Fig. 51); 13 localities between 2148 and 3656 m (IAB).

Distribution in China. Sichuan, Xizang, Gansu, Qinghai, Xinjiang (IAB).

Forage plants. ALLIACEAE: Allium senescens; ASTERACEAE: Cosmos bipinnatus, Ixeridium gracile; GENTIAN- ACEAE: Gentiana algida; FABACEAE: Astragalus adsurgens, Hedysarum tanguticum; LAMIACEAE: Caryopteris mongholica; ROSACEAE: Rubus sp.; SCROPHULARIACEAE: Pedicularis kansuensis .