is an abundant, ecologically diverse myrmicine genus found worldwide. These ants- sometimes called "Acrobat Ants"- are easily recognized by their unusual heart-shaped gasters.
Unlike most stinging insects, ants of this genus don't use their stingers to inject venom. Rather, Crematogaster employ theirs like a brush to smear a droplet of venom on their attackers. This worker exudes a droplet in response to the photographer.
Morretes, Paraná, Brazil
