Learn how to identify spiders found across the United States and Canada with this handy quick guide. Some people love them, while others fear them.

One thing is certain: spiders play an essential part of a healthy ecosystem. They are key predators of insect pests—like fleas and mosquitoes—and they serve as prey for beloved animals, such as birds.

If you see spiders in your area, keep this convenient guide close at hand. Designed for ease of use, the spiral-bound booklet is organized by type of spider web for quick identification.

Narrow your choices by the web you see, and view just a few spiders at a time. Plus, you’ll also find sections for spiders that don’t utilize webs.

The professional photographs showcase 158 species. Written by debut author Dr.

Sebastian Alejandro Echeverri—co-host of the BBC Earth Podcast—the Spiders of the United States & Canada guide features the most common and important species to know. Book FeaturesPocket-size format—easier than laminated foldoutsProfessional photos showing key markingsEasy-to-use information for even casual observersThe author’s three steps to identifying spidersImprove your identification skills and learn more about spiders and their webs, with this lightweight quick guide.

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