File:Polyergus mexicanus with Formica subsericea, Missouri, James Trager.jpg

A colony of the western slavemaker ant Polyergus mexicanus. The host species the eastern black mound ant, Formica subsericea. The mixed worker population is maintained through pupa-robbing raids on hot summer afternoons.

28 May 2017, Gray Summit, Missouri.

Photo by James C. Trager‎.