Polyxenus sp. millipede in Temnothorax nest
Arizona, USA

photograph © Alex Wild 2006

The prickly little beast on the right is a millipede in the genus Polyxenus.  I found several of these living in the brood nest of a Temnothorax rugatulus ant, where they were probably scavenging on the ant's refuse. 

USA AZ Cochise Co.: 2km NE Carr Peak.
2200m 31º25.66´N 110º17.46´W 
22.iv.2006   Open pine forest.
#AW2817, 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 D60, using a Canon 65mm f2.8 MPE 1-5x macro lens.