Description: Fourteen species of carpenter ants occur in Texas. The largest species is the black carpenter ant,Camponotus pennsylvanicus (Fabricius) and is found primarily in wooded areas outdoors. Common indoor species,Camponotus rasilis Wheeler and C. sayi Emery, have workers that are dull red bodied with black abdomens. Worker ants range in size from 1/4 to 1/2-inch. They can be distinguished from most other large ant species because the top of the thorax is evenly convex and bears no spines. Also the attachment between the thorax and abdomen (pedicel) has but a single flattened segment.
Winged reproductive carpenter ants should not be confused with winged termites (Isoptera). Ants have elbowed antennae, distinctly veined wings of different sizes (large forewings and small hind wings) and a narrow portion of the body (waist) between the thorax and abdomen. The acrobat ants, Crematogaster sp., also occasionally nest in wood. These ants are much smaller and have a heart-shaped abdomen that is often held up over their bodies. They … Read Full Post »