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kelleri Michaelsen, 1892 in its size and colour, but clearly differs from it by the higher number of spermathecae (1-3 per side in kelleri, 6-9 in proboscideus) and the presence of two prominent probosces on the prostomium.
astonished by the magnificence of the [scene before him] he could now perceive that many of the strange flowers hanging in the dark bushes were in fact insects resplendent in gleaming colours, flapping their little wings and dancing and flitting in a swarm as though caressing one another with their probosces.
Bombus appositus are bigger and have longer probosces than B.