Connecticut's Least Wanted
  • ants
  • termites
  • rodents
  • carpenter bees
  • Stinging Insects
  • Bed Bugs
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  • Ticks
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INTRODUCTION: The Black Carpenter Ant, (Camponotus pennsylvanicus), is a native species and the common species in the east. These ants get their common name from their habit of hollowing out galleries in pieces off wood for nesting purposes. This nesting habit can result in structural damage.

Ants_Carpenter_01.pngRECOGNITION: Workers polymorphic (many worker sizes), large (1/4 to 5/8”) but vary greatly in size and completely black except top of gaster with long, pale yellowish hairs pressed against its surface. Queens may reach 3/4” 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.

HABITS: Carpenter Ants are social insects. They commonly nest in decayed wood and later expand or enlarge this into sound wood. Inside, nests are located in softened wood, in insulation, and/or in wall voids.

Carpenter Ants feed primarily on insect honeydew, plant and fruit juices, insects, and other arthropods. Inside, they will also feed on sweets, eggs, meats, cakes, and grease. The workers forage for distances of up to 300 feet from the nest. Although some workers are active during the day, most activity is from dusk till dawn, with peak activity between 10 pm and 2 am.

Ants_Carpenter_02.pngBIOLOGY: Carpenter Ants colonies range in size from several thousand workers to 10-15,000, including satellite nests when maturity is reached in about 3 to 6 years. Satellite nests will contain workers, older larvae, pupae, and  possibly, winged Ants_Carpenter_03.pngreproductives but will contain no eggs. Carpenter Ants colony will produce 10 to 12 satellite nests. Developmental time (egg to adult) for workers takes 2 to 10 months. Workers are polymorphic, with majors, minors and intermediates present. There is usually only one functional, wingless queen per colony. Swarmers are not produced until the colony is usually 3.5-4 years old. Swarmers appear from May until August in the east.




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CT Pest Control Association American Mosquito Control Association National Pest Management Association American Mosquito Control Association American Mosquito Control Association