For more information on habitat, vegetation, and weather of the Nisqually Wildlife Refuge when this observation was made, please see the written journal entry for April 1, 2012. This insect was found on the observation deck area next to the large clearing at Nisqually Wildlife Refuge. It started out on a shirt and escaped to the ground where I finally got a picture of it. Stoneflies are common in areas with running water, which explains why we found it right next to the Nisqually River. They are intolerant of water pollution and their presence in a river shows that the water is relatively clean. These insects start out as nymphs living in water and become terrestrial in adulthood. The specimen we found was in adulthood.
If you think this observation is inaccurate, please add an ID, participate in the quality assessment above, or describe the inaccuracy in a comment.