The Camponotus festinus is a monogynous ant species with a colony size of up to 10,000 workers. They have a fast development speed and come in different sizes, with queens measuring 19-23 mm, workers measuring 7-11 mm, and majors measuring 10-18 mm. They have a black head and back, black abdomen with brown stripes, and brown belly. Their nutrition includes food insects like cockroaches and crickets, as well as syrup made from water and honey with a specific ratio.