21 November 1975
Vol 190, Issue 4216

About The Cover

During a territorial battle, minor workers of the ant, Pheidole dentata, surrond and pinion invading workers of a second, larger species of ant, Tetramorium caespitum. This action is the initial tactic used by the Pheidole colonies against most species of invading ants. See page 798. [A. H. Coleman, Harward University, Cambridge, Massachusetts]