Camponotus sayi is a species of ant with a monogynous colony type and a slow development speed. The colony can have up to 5,000 workers. The queen is 12-13 mm in size, workers are 4-7 mm, and majors are 9-12 mm. They have an orange-red head and chest, and a shiny black belly. Their nutrition includes food insects, syrup, fruit, and vegetables.