What do leafcutter bees use leaves for?

Leafcutter bees use leaves to construct nests for their larvae. They cut small pieces of leaves and gather them to line their nesting chambers, creating a protective environment for the eggs and developing bees. The leaves also serve as a food source, as the bees often provide pollen and nectar along with the leaf pieces for the larvae to consume. This unique nesting behavior distinguishes them from many other bee species.