Temnothorax rugatulus
Arizona, USA

photograph © Alex Wild 2006

Ant colonies maintain social cohesion through the frequent sharing of regurgitated liquid food.  This activity is called trophallaxis, seen here among painted members of a laboratory study colony.

USA AZ Pima Co.: Tucson.  Laboratory Nest.

This image is copyrighted by the photographer and cannot be used without permission. To obtain permission to use this image, please email Alex Wild. (alwild (at)  Most of the photographs on are reduced from their original size and compressed for more efficient web transmission.  In some cases, higher quality versions are available.

This image was captured with a Canon EOS 20D, using a Canon MP-E 65mm 1-5x macro lens.