Aeshnid - Sacramento Lake- 07-12-07

Otero County, New Mexico
I suspect this is Variable Darner (Aeshna interrupta interna). but possibly Shadow Darner (Aeshna umbrosa occidentale). The thoracic stripes, and particularly the size, shape, and color of the lateral abdominal markings and "T" - markings on the head might preclude the latter, and match A. interrupta interna more closely.

female laying eggs in a log

dorsal of abdomen

images copyright Bob Barber