Polyergus breviceps and Formica argentea
Truckee, California, USA
Socially parasitic ants exist in mixed colonies of parasite and host. This dulotic nest belongs to a red slave-raiding Polyergus species which is parasitic on the silvery field ant Formica argentea.
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This image was captured with a Canon EOS D60, with a Canon 65/2.8 MPE 1-5x Macro lens.