Early-diapause
Guides
Camponotus castaneus
Chestnut Carpenter Ant, Red Hazelnut Carpenter Ant, Reddish Carpenter Ant
Camponotus castaneus is a medium-sized carpenter ant native to eastern North America. Workers exhibit pronounced size polymorphism, with minor workers measuring 8-10 mm and major workers reaching 10-14 mm; queens are substantially larger at 18-20 mm. The species is distinguished by its orangish-red coloration, smooth thorax and abdomen, and single petiolar node. Colonies nest in rotting wood and undergo an early diapause beginning in fall, often ceasing foraging before other temperate ant species.