Pyramica membranifera
Arizona, USA

photograph © Alex Wild 2007

Workers of the stealth predator Pyramica membranifera grooming each other in the nest. These ants are only a couple millimeters in length and turn motionless when disturbed, making them very hard to find even where they are common.

USA AZ Pima Co.: Tucson
32º14.05'N 110º54.90'W 730m. 23.x.2007.
Ant nest under stone next to sidewalk, urban.
#AW2934 voucher specimens deposited at ALWC.

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.