25/06/2025
Argiope savignyi is a species of orb-weaving spider found from Mexico to Bolivia. It was observed capturing and feeding on the proboscis bat Rhynchonycteris naso in Costa Rica, completely enveloping the bat in silk over the course of a day.
The web is practically invisible, and it is easy for an individual to become covered in this sticky web. The pattern of the silk produced by this species is very easy to recognize, as it is pure white, and some species form an "X" or a zigzag-like web (often with a hollow center). The spider then places one pair of legs with each of the four lines in the hollow X, forming a complete "X" of white lines with a very striking bright yellow spider on a field of black or red with white and yellow stripes forming its center. The white patterns are called stabiliment and reflect UV light. These play a very important role in attracting prey to the web, and possibly protecting them from predators. The center of these large webs is barely 1 m above the ground, so they are too low for anything much larger than a rabbit to crawl underneath. The web's composition has been speculated to prevent larger creatures from destroying the web and possibly eliminating the spider.
It is interesting to note that most spiders, when a leg is damaged, have the ability to regenerate it, provided they have not lost it completely. Regeneration of body parts in spiders is not limited to legs alone; they can also regenerate palps, chelicerae, etc...
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