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The Crab Spiders of Canada and Alaska

Although there has been sporadic collecting of spiders in Canada for more than a century, the spider fauna is not well known in any part of the country. Furthermore, most of the genera are in need of taxonomic revision. A compilation of current taxonomic knowledge, however preliminary, should enable students, technical assistants, and amateur and professional entomologists to make at least some identifications on their own. The authors hope that many users will go further and make new contributions to the field.
This book contains a key to spider families, a detailed treatment of the crab spiders (families Philodromidae and Thomisidae), and a glossary of anatomical terms used in spider taxonomy.