Acanthomyrmex mizunoi is a polygynous ant species with colonies that can contain up to 1000 workers. The development rate of this species is medium. The ants vary in size, with the queen measuring 4-6 mm, workers 3-4 mm, and majors 5-8 mm. They have a brown-red coloration. Their diet consists of food insects, syrup, fruits, vegetables, jelly, and cooked chicken without salt.