9 spp. in 5 subgenera in our area, 400 spp. in 31 subgenera worldwide(1)
Carpenter bees have largely naked abdomens, separating them from bumble bees
The wing marginal cell
is very long and thin; the 2nd submarginal cell tapers toward the body to an extreme point (2)
Space between the mandible and the eye is short as compared to Bombus, which is much longer (2)
Pollen is collected with widely spaced, stiff bristles compared to Bombus who carries pollen as a wet mass (2)
widely eastern; X. micans
se. US; 3 spp. are western (X. californica, X. varipunctata, X. tabaniformis(3)
Found on flowers and about nest sites in woody plants.
Early spring-late fall in temperate areas. Adults overwinter
Visits a wide range of pollen and nectar sources. Well known as a nectar robber.
Burrow into wood, forming a series of chambers, typically 6-8. Each is provisioned with pollen (mixed with regurgitated nectar), a single egg is laid, and then capped with a disk of wood pulp. Chamber is sealed and adult does not return. Adults also reported to use abandoned tunnels and other cavities to store pollen before hibernation. Usually one generation per year, but may be two in south.
Bumblebees -- Carpenter-mimic Leafcutter -- Giant Resin Bee -- Mexican Cactus Fly -- Mallota spp. -- Bee-like Robber Flies