How do carpenter bees differ from bumble bees in appearance?

Carpenter bees are distinguishable from bumble bees primarily due to their appearance, particularly their abdomens. Unlike bumble bees, which are typically furry and covered in hair, carpenter bees have a smooth and shiny abdomen. This distinct feature assists in identifying carpenter bees as they often resemble large bumble bees but lack the hairiness that characterizes the latter. The shiny abdomen of carpenter bees not only sets them apart visually but also plays a role in their behavior and environmental adaptations.

The focus on the shiny abdomen as a distinguishing characteristic is crucial for pest control professionals, as it aids in proper identification and subsequent management of the species. The other characteristics related to size and wing length are not typical distinguishing features between carpenter bees and bumble bees, making the shiny abdomen the most relevant choice in this context.