23. Bombus (Psithyrus) cornutus (Frison)

(Fig. 26)

Psithyrus (Psithyrus) cornutus Frison, 1933:338, type not seen. India.

Psithyrus (Psithyrus) pyramideus Maa, 1948:19, paratype male IZB examined. Regarded as conspecific with Psithyrus cornutus Frison by Tkalců (1989). China: Fujian.

Psithyrus (Psithyrus) acutisquameus Maa, 1948:21, holotype male IZB examined. Synonymised with Psithyrus cornutus ssp. pyramideus Maa by Tkalců (1989). China: Anhui.

Psithyrus (Ceratopsithyrus) klapperichi Pittioni, 1949:273 (not of Pittioni, 1949:266 = B. picipes Richards), paratype female BMNH examined. Synonymised with Psithyrus cornutus ssp. pyramideus Maa by Tkalců (1989). China: Fujian.

Psithyrus (Eopsithyrus) cornutus ssp. canus Tkalců, 1989:42 (not of Schmiedeknecht, 1883:359 = B. pomorum (Panzer), paratype female MNHU examined. China: Yunnan.

Material examined. 1 female 3 males (IAB).

Distribution in Gansu. Common at medium elevations of the southeastern mountains (Fig. 26); 3 localities between 1705 and 1770 m (IAB).

Distribution in China. Shanxi, Anhui, Fujian, Chongqing, Yunnan, Gansu (IAB).

Forage plants. ASTERACEAE: Cirsium monocephalum .

24. Bombus (Psithyrus) expolitus (Tkalc ů) (Fig. 27)

Psithyrus (Eopsithyrus) expolitus Tkalců, 1989:44, holotype female MNHU examined. ‘Turkestan Kashgar,’ believed incorrect.

Material examined. 3 females (IAB).

Distribution in Gansu. Rare at high elevations of the Qinghai-Tibetan plateau in the southwest (Fig. 27); 1 locality 3524 m (IAB).

Distribution in China. Gansu, Qinghai (IAB).

Forage plants. ASTERACEAE: Carduus crispus .