Lasius pallitarsis
Blodgett Forest, El Dorado Co., California, USA

photograph © Alex Wild 2003

Lasius pallitarsis differs from all other North American Lasius species in the dentition of the mandible.  Specifically, L. pallitarsis sports a small tooth along the inner margin of the mandible, just proximal of the junction of the basal and masticatory faces, and visible here as the tooth closest to the head.

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, with a Canon 65/2.8 MPE 1-5x Macro lens.