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Caerostris sexcuspidata, also known as the common bark spider, is a species of spider that occurs in Southern Africa, and on islands off the east coast of Africa, such as Madagascar, the Comores and Aldabra Island. [1] It is a mainly nocturnal orb-web spider, the female constructing a large orb web stretching between trees or shrubs.
The Araneoidea, or the "ecribellate" spiders, do not have these two structures. The two groups of orb-weaving spiders are morphologically very distinct, yet much similarity exists between their web forms and web construction behaviors. The cribellates retained the ancestral character, yet the cribellum was lost in the escribellates.
The sheet type of spider web works in two ways. Sometimes the insects get caught up in the threads and are trapped until they are eaten. At other times, the sheet is used as a base from which the ...
A classic circular form spider's web Infographic illustrating the process of constructing an orb web. A spider web, spiderweb, spider's web, or cobweb (from the archaic word coppe, meaning 'spider') [1] is a structure created by a spider out of proteinaceous spider silk extruded from its spinnerets, generally meant to catch its prey.
Theridiidae, also known as the tangle-web spiders, cobweb spiders and comb-footed spiders, is a large family of araneomorph spiders first described by Carl Jakob Sundevall in 1833. [1] This diverse, globally distributed family includes over 3,000 species in 124 genera , [ 2 ] and is the most common arthropod found in human dwellings throughout ...
The average toughness of the fibres is 350 MJ/m 3, and some are up to 520 MJ/m 3, making the silk twice as tough as any other spider silk known. [8] The web of Darwin's bark spider is remarkable in that it is not only the longest spanning web ever observed, but is the largest orb web ever seen, at an area of up to 2.8 square metres (30 sq ft). [2]
Within the spider’s social group, all spiders in the group take part in web construction, maintenance, and prey capture. [3] Nests are large web structures composed of a compact combination of silk and nearby branch or desert brush. These nests are built in spiny bush twigs or trees close to the ground at a height of 0.5 to 1.5 meters high. [10]
The spider web of T. versicolor, like any other orb weaver spider, is used to catch prey. It can be seen as an extension of the spider's senses. The orb web is efficiently made with a minimum amount of silk (0.1–0.5 mg of silk) in a short amount of time (30–60 minutes).