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Carpenter Bees

Identification, Habits, and Control
Closeup photo of a Carpenter Bee

About Carpenter Bees

Genus: Xylocopa spp.

Carpenter bees are large and solitary. Known for boring into wood to create nesting tunnels, they are commonly found around decks, eaves, fences, and other exposed wood surfaces.

While not typically aggressive, their nesting behavior can lead to cosmetic and structural damage over time – especially if activity continues season after season in the same areas.

How to Identify Carpenter Bees

Size

  • Approximately 1/2 to 1 inch long
  • Similar in size to bumblebees

Color

  • Black and yellow body
  • Males may have lighter markings on the face

Identifying Characteristics

  • Shiny, hairless black abdomen (unlike fuzzy bumblebees)
  • Slow, hovering flight patterns near wood surfaces
  • Round entry holes drilled into wood
  • Fine sawdust (frass) beneath nesting holes

Where You’ll Find Them

  • Wooden decks, railings, and fences
  • Eaves, fascia boards, and siding
  • Outdoor furniture and wooden structures
  • Exposed, untreated, or weathered wood surfaces

Behavior and Risks

Carpenter bees drill uniformly round holes into wood creating nesting tunnels where they lay eggs and raise their young. While a single bee may not cause significant damage, repeated nesting over time can weaken wood and create visible deterioration.

Male carpenter bees are often seen hovering near nesting areas and may appear aggressive, but they do not have stingers. Female carpenter bees can sting, though they rarely do unless directly handled or threatened.

Over time, old tunnels may be reused and expanded, increasing the potential for damage and attracting additional pests such as woodpeckers.