Northern Sierra Nevada, California, USA

photograph © Alex Wild 2004

Aphids have a remarkably complicated life cycle, periodically producing winged forms.

USA, CA, Nevada Co.: Sagehen Creek Field Station. vii.2004, 39º26'N 120º14'W, 1900m.
Open Jeffrey pine forest-sagebrush scrub.

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.