Myrmecology - Alex Wild Photography
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A key innovation in ant evolution is the metapleural gland, seen here as a pair of openings in the body just above the hind legs. The gland is present in nearly all ants and is thought to play an antibiotic role. (Anochetus faurei, South Africa).

A key innovation in ant evolution is the metapleural gland, seen here as a pair of openings in the body just above the hind legs. The gland is present in nearly all ants and is thought to play an antibiotic role. (Anochetus faurei, South Africa).

metapleural glandant anatomySEMmicroscopyponerinaemorphology