Leafcutters are solitary bees where the female takes care of all the work unlike behavior of colony bees that are assigned a role per caste. The female lays 35-40 eggs at a time inside nests created from leaves. They are filled with nectar and pollen for the larva to feed once hatched. Pupation occurs over the winter with the adults beginning to emerge in spring and living up to two months.
Velvet ants and certain blister beetles are among the list of predators of the leafcutter bee.
Bee stings can produce different reactions, ranging from temporary pain and discomfort to a severe allergic reaction.
They like to “cavity nest.” Meaning they like to make nests in ready made cavities or in soft rotting wood that can be ‘excavated.’