Females use their strong jaws to cut into wood, making holes as large as their bodies. These somewhat deep holes may appear on wooden fence posts, lumber, tree trunks and other thick wooden structures. They rarely bore enough holes to weaken the structure they're digging into. This nest is where a female will deposit her eggs, adding some pollen grains for each egg to serve as a food supply once the larvae hatch.
A male will guard the entry to the nest, preventing other males from potentially reproducing with the female.
Males and females look similar save the light yellow/white patch of hair on the male's face. Males are not known to sting, though females may. All adults are most active from spring through summer. They all hibernate during the winter.