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Spiders also have several adaptations that distinguish them from other arachnids. All spiders are capable of producing silk of various types, which many species use to build webs to ensnare prey. Most spiders possess venom, which is injected into prey (or defensively, when the spider feels threatened) through the fangs of the chelicerae. Male ...
Abdomen or opisthosoma: One of the two main body parts , located towards the posterior end; see also Abdomen § Other animals; Accessory claw: Modified setae at the tip of the tarsus in web-building spiders; used with tarsal claws to grip strands of the web [1]
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.
In addition to preserving spiders' anatomy in very fine detail, pieces of amber show spiders mating, killing prey, producing silk and possibly caring for their young. In a few cases, amber has preserved spiders' egg sacs and webs, occasionally with prey attached; [93] the oldest fossil web found so far is 100 million years old. [94]
This type becomes substantially reduced in orb-web spiders, in which a collecting duct is lacking and the labyrinth apparently no longer has an excretory function." (Biology of Spiders, 1996) I would also like to point out that Biology of Spiders includes two diagrams similar to the one above. One shows the entire spider and one shows only the ...
Category: Spider anatomy. 11 languages. ... Spider web This page was last edited on 24 January 2019, at 21:53 (UTC). Text is available under the Creative Commons ...
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In spiders, the calamistrum is a row of specialized leg bristles used to comb out fine bands of silk. [1] It is only found on cribellate spiders, that is, spiders that possess the spinning organ known as the cribellum. [2] The calamistrum and cribellum are used to form the hackled bands of silk which are characteristic of the webs of these ...