Spider Building Spider Decoys Discovered in Peruvian Amazon

December 19, 2012

Biology

cyclosa-building-decoy-spider-torres

Credit: Phil Torres

Discovered at the Tambopata Research Center in the Peruvian Amazon, a spider belonging to the genus Cyclosa is capable of producing elaborate, fake spider decoys. It hangs them in its own web and shakes the web, furthering the illusion.

The spider is believed to be a new species, and crafts a larger spider from leaves, debris and dead insects. The genus Cyclosa includes other sculpting spiders, but this is the first that has been observed to build a replica with multiple legs and to use a web-shaking behavior.

The fake spiders serve as decoys, as part of a defense mechanism meant to confuse or distract predators. Within a 1-square-mile area, researchers found more of these spider-building spiders. They could be locally restricted, but there could also be millions of these spiders in the rainforest. Some of the decoys looked realistic, while others looked more like cartoon octopi.

Other spiders of the genus Cyclosa build decoys that are clumpy and made out of multiple little balls built from egg sacs, debris and prey, rather than something that actually looks like another spider.

cyclosa-building-decoy-spider-torres-decoy

A decoy spider hangs below its much smaller builder, suspected to be a new species in the genus Cyclosa. Credit: Phil Torres.

Read more details about this discovery in this Rainforest Expeditions blog post by Phil Torres.

[via Wired]

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2 Responses to “Spider Building Spider Decoys Discovered in Peruvian Amazon”

  1. Phil Torres Says:

    Thanks for posting on the spider! Just wanted to correct the author and let you know it was found in Peru, not Panama, at the Tambopata Research Center.

    Reply

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