QUICK STATS:
Color:
Yellow and black
Shape:
Robust, oval
Size:
1/2 -1 inch long
Region:
Found throughout the U.S. as well as Southern Ontario
OVERVIEW:
Carpenter bees get their common name from their habit of
boring into wood to make galleries for rearing their young.
Carpenter bees resemble bumblebees but their abdomen
is largely bare and shiny.
PREVENTION:
• Carpenter bees prefer bare wood, so painting and staining
wood can sometimes deter them.
• Routinely inspect wood on your property for signs of a
carpenter bee infestation, including round, smooth holes.
• In some cases, carpenter bees will attack stained or painted
wood. If you suspect a carpenter bee infestation, contact a
licensed pest professional.
HABITS:
Carpenter bees are not social insects and do not live in nests
or colonies. The adults over-winter, typically in abandoned
nest tunnels. In the spring, they emerge and feed on nectar. To
excavate galleries, female carpenter bees bore circular holes the
same diameter as their bodies straight into wood, and then turn
to tunnel along the grain of the wood.
THREATS:
Carpenter bees are a serious property threat, and can
cause structural damage over time if left untreated. They
prefer weathered and unpainted wood. Male carpenter bees
can be territorial and may hover in front of one’s face
aggressively, but they have no stinger and these actions
are merely for show. Female carpenter bees do have a potent
sting, but it is rarely used.
DID YOU KNOW? Carpenter bees…
• will chew a tunnel into a piece of wood to build a nest gallery.
The bits of wood they chew and deposit outside the nest
are called frass.
• stingers are not barbed, so the female can sting over
and over again.
• tunnel openings usually look about one or two inches deep,
but they can be up to 10 feet long.