Black Carpenter Ant (Camponotus pennsylvanicus)

Order: Hymenoptera (hy-men-OP-ter-a) (Info)
Family: Formicidae (for-MISS-ih-dee) (Info)
Genus: Camponotus
Species: pennsylvanicus (pen-sil-VAN-ih-kus) (Info)


This bug has been reportedly found in the following regions:

Deer, Arkansas
Garfield, Arkansas
Malvern, Arkansas
Washington, Illinois
Sioux City, Iowa
Minneapolis, Minnesota
Byhalia, Mississippi
Greensboro, North Carolina
Youngstown, Ohio
, Ontario
Portland, Oregon
Meshoppen, Pennsylvania
Middleburg, Pennsylvania
Memphis, Tennessee
Cleburne, Texas
Schofield, Wisconsin
Show all

Members' Notes:


On Jun 5, 2015, keikee from Youngstown, OH (Zone 5b) wrote:

Aprox 18 months ago a mound of Thyme in the garden began to die. First in the center of the plant. I'd put the little 3 inch pot of thyme in the ground near the edge(there's a "retaining" wall of bricks where the rose bed meets the lawn)of a big rose bed. So it begins to die only in the center. It was interesting so I let it go to see what would eventually happen. In a nutshell, the Thyme plant became central headquarters for what turned into a very bad infestation of those carpenter ants. They're now all over that bed and I've noticed them around the base of my two beautiful Honey Locust Trees.They have to go & here's my problem. Birds are nesting & bunnies are visiting not to mention my two dogs who follow me around the garden & love to lay in the shade of those Locust trees. They're gon... read more


On Oct 24, 2008, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

A major pest in houses, they nest in wet or moist wood in the walls, weaken them, and require replacement of the wood - basically like termites in Minnesota. They will also nest in rotting heartwood - there's a dying tree that we will have to cut down because of those carpenter ants. Doesn't harm any plants other than to make conditions worse for trees but they tends aphids and other soft bodies bugs for their honeydews so could have a indrect effects on plants. I have seen them nest in the ground, thought the other websites seem to never metion this - the nests are generally multi holes in the ground, slightly raised. Maybe it is because it's sandy. Will bite.


On Jun 27, 2008, DBartholow from Mechanicsville, MD wrote:

I have them here in Maryland. They had taken up residence in my Sassafrass tree by chewing tunnels through the trunk. The tree is approximately 20 years old. I used Raid and Yard Guard sprayed in all the holes except one and ran them out of the tree. There were hundreds including some mature queens that would have flown off to start a new colony if not eradicated in time. They were living in the tree and eating the bird seed in my feeder at night. I couldn't think of any other way to get to them since they were down in the trunk. The tree is still living and appears to be fine. I think I caught them in time.


On Apr 7, 2008, OutlawDJ from Middleburg, PA wrote:

One natural control you can try with these ants is to set a feeder full of shelled corn where the ant infestation is. Flickers like shelled corn, but they LOVE ants. If the flickers find your ants they should bring the problem under control.

If these ants get in your house, call an exterminator. Carpenter Ants will literally bring your house down on you. Last year my Mom had to replace her roof and a lot of the rafters because of them.


On Dec 29, 2007, paulineristeau from Warren, MI wrote:

These ants are terrible ! The best way I've found to get rid of them is to mix borax with sugar and spread ir around where they are. The ants take it back to their nest and it kills them all hopefully this will help you : )


On May 24, 2007, Busgirly from Sarnia, ON (Zone 6a) wrote:

This bug is in my Carpet rose and I'm not sure how to get rid of them. I have had my carpet rose for a couple years without any insect problems until now. Part of the rose looks as if its dying. What can I do?