Carpenter Ant Regognition
The Black Carpenter Ant
Workers polymorphic, large (1/8-1/2" or 3.5-13 mm) but vary greatly
in size; queens about 112-518" (13-17 mm) long. Color black, combinations
of red and black, or completely red or brown. Antenna 12-segmented,
without a club. Thorax lacks spines, profile evenly roundedd on upper side.Stinger
absent. Workers capable of emitting a strong formic acid odor.
Camponotus modoc with workers about 1/4-1/2" (5-11 mm) long, dull
black with reddish legs and with golden hairs covering abdomen. Queens
up to 5/8+" (17+ mm) long. Other species black, various combinations of
red and black, or completely red or brown. Although carpenter ants do not
sting, their bites can be quite painful, especially when they inject formic
acid into the wound.
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Mark Pierce
Oregon Certified Home Inspector
Office: 800-995-4063 
Cell:503-757-7784
OCHI #345 - NIBI
#143902RT- ASHI Candidate #210885
OPCA #153495
- WSDA WDO #61752
