Spiders of North AmericaAn accessible field guide to more than 500 of the most commonly found spider species in North America Of the more than 49,000 species of spider worldwide, some 4,000 are found in North America. Spiders of North America explores more than 500 of the most common and interesting spiders found in this region of the world. This richly illustrated guide begins with an overview of spiderswhat they are exactly, how they can be found, how they develop, and why