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42,473 and Counting

The newest version of The World Spider Catalog, by Norman Platnick of the American Museum of Natural History, is now online. This amazing document lists every species of spider described so far and includes counts of species in each spider family, a summary list of fossil spiders, and a massive bibliography. As of June 21, arachnologists have identified 42,473 spider species, but I wouldn’t be surprised if a few more have been identified since then.
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