Ja. Bishop, BUMBLE BEES (BOMBUS-HYPNORUM) COLLECT APHID HONEYDEW ON STONE PINE (PINUS-PUMILA) IN THE RUSSIAN FAR-EAST, Journal of the Kansas Entomological Society, 67(2), 1994, pp. 220-222
Numerous Bombus hypnorum workers collected honeydew from aphids, Cinar
a cembrae, on Pinus pumila 15 km southwest of the Aborigen Field Stati
on (61-degrees-50'N, 149-degrees-20'W) in the Russian Far East in July
, 1992. Five other species of bumble bees foraged on flowers in the im
mediate vicinity but did not collect aphid honeydew. Aphids were on P.
pumila only at the driest site P. pumila grew in the area.