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| Spider web of unknown creator. |
Spider webs are as various in
architecture and silk variety as the species of spiders that build them. Some spiders, such as those in the
orb weaver family, spin classic web shapes. Other spiders like the
Zebra Tarantula constructs a "web" covering for its den as a trip wire and uses its silk for adhesion purposes. A web is not always spun for the purpose of capturing prey as most tarantulas also line their burrow walls with a web-like construction. Web-building is an innate program with no visual cues and little plasticity that can be
divided into stages. Much of this innate behavior relies on the
central nervous system where variation can cause
drastic changes in the web construction process. While weaving is a
complex behavioral pattern, it is governed by a simple set of rules.
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