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A stabilimentum (plural: stabilimenta), also known as a web decoration, is a conspicuous silk structure included in the webs of some species of orb-web spider. Its function is a subject of debate. Its function is a subject of debate.
Like other species of the same genus, it is known as a "signature spider"; it builds a web with a zig-zag stabilimentum somewhat resembling letters. The mature female of A. anasuja always rests at the centre of the orb with her head facing downwards. The orb has an opening at the centre and when disturbed she goes through the hole and exits on ...
The zigzag-shaped web decoration, named the stabilimentum, is featured at the centre of the orb. Its function is not currently known, though studies have indicated that the webs containing stabilimentia are damaged less often by birds flying through them. [3] [4] When prey gets trapped in the web, the spider immobilizes it by wrapping it in silk.
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The stabilimentum may decrease the visibility of the silk to insects, thus making it harder for prey to avoid the web. [9] The orb-web consists of a frame and supporting radii overlaid with a sticky capture spiral, and the silks used by orb-weaver spiders have exceptional mechanical properties to withstand the impact of flying prey. [ 10 ]
Argiope aurantia is a species of spider, commonly known as the yellow garden spider, [2] [3] black and yellow garden spider, [4] golden garden spider, [5] writing spider, zigzag spider, zipper spider, black and yellow argiope, corn spider, Steeler spider, or McKinley spider. [6] The species was first described by Hippolyte Lucas in 1833.
This white zigzag in the centre of its web is called the stabilimentum or web decoration. [2] In North America, Argiope aurantia is commonly known as the black and yellow garden spider, zipper spider, corn spider, or writing spider, because of the similarity of the web stabilimenta to writing.
Argiope pulchella is a species of the orb-weaver spider family, Araneidae. Its range extends from India to China , Indochina , and Sumatra . It is a synanthropic species, often living in habitats associated with humans.
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