Leafcutter Bee

Leafcutter bees and their close relatives belong to a family (Megachilidae) that is unique in that most female members do not carry pollen on the legs but instead on the underside of the abdomen.  As shown here, these bees have evolved a dense brush of hairs to carry pollen; the pollen is packed dry so remains powdery.  In the nest, with a few rubs with her legs, the pollen will be removed from her abdomen, formed into a single food mass, and eventually a single egg will be laid.