Everybody knows that spiders related with web. There is no coherent relationship between the classification of spiders and the web’s types. Species in the same genre can build very similar or very different webs.Nor is there much correlation between spiders’ classification and chemical composition of their silks. Convergent evolution at web building, in other words, the use of similar techniques for remotely related species, is "rampant”.
No orb-web design and spinning behaviors that produce them have received very little attention from arachnologists, although the majority of spiders do not build orb webs. Basic radial and spiral sequence visible in orb-webs and the "sense of direction" needed to build them may have been inherited from common ancestors of most spider groups. It used to think that the sticky orb web was a result of evolutionary innovation in the diversification of Orbiculariae.
Now, however, it appears that non-orb spiders are a sub-group that evolved from orb-web spiders. Non-orb spiders have more than 40% more species and are four times as abundant as orb-web spiders. Their greatest success may be due to sphecid wasps, which are often the dominant predators on spiders, much prefer to attack spiders with flat webs.
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