Spiders Araneae

There are over 30,000 species of spiders worldwide, of which approximately 50 species in the United States have been implicated in medically significant envenomations. All spiders are carnivores utilizing venom to paralyze their prey prior to ingestion ( Fig 188-3).

FIG. 1BB-3. External anatomy of a spider. A. Dorsal. B. Ventral. C. Frontal. (Reproduced with permission from Management of Wilderness and Environmental Emergencies. St. Louis: Mosby, 19B9.)

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