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Field Guide References for Terrestrial Insects and Spiders

An online community of naturalists who enjoy learning about and sharing observations of insects, spiders, and other related creatures.

North American Insects and Spiders - Cirrus Digital Imaging
A catalog of over 5,000 high-resolution close-up pictures of live, wild insects and spiders with descriptions, taxonomy and natural history. Many of the images are free for noncommercial use.

Haggard, P. 2006. Insects of the Pacific Northwest. Timber Press. (ISBN: 0881926892)