Some S-J Dragonflies and Damselflies
Many thanks to Dennis Paulson, Director Emeritus of the Slater Museum of Natural History at the University of Puget Sound in Tacoma, WA, for providing identifications of some of our Odonates! For a wealth of images and information about Odonata, including distribution maps for Western North America, see this link reflecting his work:
Additional sources: Dunkle, Sidney, 2000, Dragonflies through Binoculars, NY: Oxford University Press
Members of the Order Odonata have "two pairs of long membranous wings nearly equal in size and with many cross veins" (Castner p. 55). Their heads have biting mouthparts, short antennae, and very large sphericoid compound eyes. The aquatic nymphs are predaceous. Many of the images below may be enlarged.
Mexican Amberwing (Perithemus intensa)