the agent of pollen transfer, usually bees. Synonyms: pollenate, cross-pollinate. The most recognized pollinators are: bees, which are plainly adapted to pollination. bumblebees (also known as the pollen basket Lepidoptera (butterflies and moths) also pollinate. Wasps, bombyliid flies and syrphid flies are important. Beetles, and even thrips or ants can sometimes pollinate self fertile flowers. Blue bottle or carrion flies are important for some flowers, usually ones that exude a fetid odor. Bats are important pollinators of some tropical flowers. Birds, particularly hummingbirds Even humans can be pollinators, as many gardeners have discovered that they must hand pollinate.