Carpenter Bee
Large, shiny smooth black abdomen, drills round holes in wood
Individual
Swarm
Nest / Hive
Wing / Body Pattern
What It Is
Carpenter bees are large solitary bees that drill nest tunnels in exposed, untreated wood, and they are very common across Middle Tennessee. The eastern carpenter bee is a familiar springtime presence on decks, fascia boards, and fences throughout the Nashville area. They are called carpenter bees because they excavate their own tunnels rather than find existing cavities. Carpenter bees are not colonial. Each female drills her own tunnel, lays eggs, and provisions them with pollen. There is no queen, no hive, and no colony to remove. Size: 3/4 to 1 inch, similar to a bumblebee.
How to Identify
The clearest visual ID: the abdomen is smooth and shiny black. This is what separates a carpenter bee from a bumblebee at a glance, because bumblebee abdomens are fuzzy and carpenter bee abdomens are not. The clearest nest ID: a clean, round hole about 1/2 inch across, drilled into unpainted wood such as fascia boards, deck railings, fence posts, and wooden eaves. The hole runs straight in for a short distance, then turns to follow the wood grain. Sawdust may be visible below the opening. In spring, males are often seen hovering near the hole, a conspicuous territorial display directed at other males.
Behavior and Risk
Carpenter bee males are territorial and will hover, dart, and sometimes fly directly at people who approach the nest area. Males have no stinger, so this behavior is dramatic but harmless. Females can sting but very rarely do, typically only when handled or trapped. The relevant concern for homeowners is property damage. Over successive seasons, repeated nesting in the same wood deepens the tunnels and weakens the material, and water can enter the holes and accelerate rot.
How to Handle
Prevention: paint or stain all exposed wood, the single most effective measure, because carpenter bees strongly prefer untreated surfaces. Fill existing holes in fall, once activity has ended, using wood filler or wooden dowels, then paint the surface. In Middle Tennessee the active season runs through the spring and into early summer, so fall is the right time to seal old holes.
Smooth abdomen versus fuzzy abdomen is the single reliable distinguisher between a carpenter bee and a bumblebee. A large bee disappearing into a round hole in a wooden board is a carpenter bee. Large fuzzy bees near the ground or coming from a ground-level opening are more likely bumblebees.
Frequently Asked Questions
Will carpenter bees sting me?
The hovering male will not. Males have no stinger. The female can sting but is extremely reluctant to do so unless directly handled.
How do I stop carpenter bees from drilling into my deck?
Paint or stain all exposed wood surfaces. Carpenter bees avoid treated wood. Fill existing holes in fall using wood filler, then paint. Repeat annually on surfaces that get significant weathering.
Do carpenter bees cause structural damage?
Over time, yes. Repeated nesting seasons in the same wood deepen the tunnels. Water infiltration through open holes accelerates rot. Treating the surface prevents the long-term accumulation.
Does Beecasso remove carpenter bees?
Carpenter bee activity is a different situation from honeybee hive removal. There is no colony to extract and no comb to remove. The lasting fix is sealing the tunnels and treating the wood surface. If you are unsure whether you have carpenter bees or a honeybee colony, send us a photo and we will identify it for free.
Is a carpenter bee the same as a bumblebee?
No. Both are large but easily distinguished by the abdomen. Bumblebee abdomens are fuzzy and hairy, while carpenter bee abdomens are smooth and shiny black. They also nest differently: bumblebees in the ground, carpenter bees in wood.