Excerpts from Jim Conrad's
Naturalist Newsletter
from the June 27, 2009 Newsletter, issued from the Siskiyou Mountains west of Grants Pass, Oregon:
EIGHT-SPOTTED SKIMMERS
Above you see the largest, most common dragonfly at the pond above my trailer, the Eight-spotted Skimmer, LIBELLULA FORENSIS. If you live west of the Rockies and want to be able to recognize just one species, this is a good one to choose because of it's so eye-catching and common.