Of the 48 insect species (of 7 orders) captured on C. cajan flowers on 4 plots, Megachile species accounted for 31% of the total number of insects caught, and Apis dorsata for 4.5%; a single Apis florea was caught. bees collected both nectar and pollen from the flowers. The foraging behaviour of A. dorsata, A. florea, Megachile spp. and Xylocopa spp. was observed on a fifth plot, and is described in detail. A. dorsata and Megachile spp. discriminated between a cultivar with flowers of normal structure (prefered by Megachile) and one with flowers of a modified structure (preffered by A. dorsata). Although most insects carried some C. cajan pollen, it is thought that Megachile spp. are responsible for most of the crosspollination which occurs.