Azteca muelleri is a species of ant in the genus Azteca. Described by the Italian entomologist Carlo Emery in 1893, the species is native to Central and South America. It lives in colonies in the hollow trunk and branches of Cecropia trees. The specific name muelleri was given in honour of a German biologist Fritz Müller, who discovered that the small bodies at the petiole-bases of Cecropia are food bodies.

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