Thassus sp. - Giant Mesquite Bug, nymphs
Arizona, USA

photograph © Alex Wild 2006

An aggregation of young mesquite bugs.  Their bright coloration serves as a warning to potential predators that these insects are distasteful.

USA AZ Cochise Co.: 5km SSE Sierra Vista, Ramsey Canyon Road.  1460m 31º28.02´N 110º15.87´W 
22.iv.2006   Prosopis woodland, Sonoran desert.  ex Prosopis.

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.