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Long-horned Orb-Weaver
No one is really sure of the purpose of this spider's long horns. Some think it is to intimidate predators. Gido/Flickr
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With its massive antenna-like horns, the spiny Macracantha arcuata looks like some sort of WiFi-equipped gadget. Nobody is really sure what purpose the horns actually serve, but it's possible that they are mostly for show, to make the spider look more intimidating to predators [source: Wired, World Spider Catalog].
Little information is available in scientific texts about this spider, although it was first discovered in the 1700s and lives in India, Borneo and China. The long-horned orb-weaver is so otherworldly looking that an illustration of it is actually included in an artist's guide to drawing mythical creatures [source: O'Connor].
