Carpenter Ants
Symbionts Camponotus All ants in this genus, and also some related genera, possess an obligate bacterial endosymbiont called Blochmannia.This bacterium has a small genome, and retains genes to biosynthesize essential amino acids and other nutrients. This suggests the bacterium plays a role in ant nutrition. Many Camponotus species are also infected with Wolbachia, another endosymbiont that is widespread across insect groups.
Habitat Carpenter ant species reside both outdoors and indoors in moist, decaying or hollow wood. They cut “galleries” into the wood grain to provide passageways for movement from section to section of the nest. Certain parts of a house, such as around and under windows, roof eaves, decks and porches, are more likely to be infested by Carpenter Ants because these areas are most vulnerable to moisture.
As pests Carpenter ants can damage wood used in the construction of buildings. They can leave behind a sawdust-like material behind called frass that provides clues to their nesting location. Carpenter ant galleries are smooth and very different from termite-damaged areas, which have mud packed into the hollowed-out areas.
Exploding ants In at least nine Southeast Asian species of the Cylindricus complex, including Camponotus saundersi, workers feature greatly enlarged mandibular glands that run the entire length of the ant’s body. They can release their contents suicidally, rupturing the ant’s body and spraying toxic substance from the head, which gives these species the common name “exploding ants.” The ant has an enormously enlarged mandibular gland, many times the size of a normal ant, which produces the glue. The glue bursts out and entangles and immobilizes all nearby victims.
