Camponotus sericeus is a monogynous ant species with colony sizes of up to 5000 workers. They have an average development speed. The queen measures 13-15 mm, workers measure 5-8 mm, and majors measure 8-11 mm. They have a dark gray color with thick golden hairs on the abdomen and a slightly red head. Their nutrition consists of food insects such as cockroaches and crickets, as well as syrup made from a water/honey mixture at various ratios.