About Neivamyrmex nigrescens (Cresson, 1872)
Neivamyrmex nigrescens (Cresson, 1872) is a North American army ant species that belongs to the genus Neivamyrmex. This species occurs in the United States and Mexico. It is the most widely distributed Neivamyrmex species in the United States. Because of its broad geographic range, it has become the most studied and best-known species in its entire genus.