An ant belonging to the genus Temnothorax, a close relative to the ants used in this study. (IMAGE)

University of Arizona

An ant belonging to the genus Temnothorax, a close relative to the ants used in this study.

Caption

The rock ants studied by the researchers belong to the genus Temnothorax (pictured here is a closely related species). Rock ants live in small colonies and often build their nests inside rock crevices.

Credit

Gilles San Martin/Wikimedia Commons

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