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These minute spigots produce extremely fine fibers, merely tens of nanometres thick, which are combed out by the spider's calamistrum, producing silk with a woolly texture. The fibers are so small in diameter that they are strongly subject to Van der Waals forces . [ 2 ]
Spiders in the family are easily identified by the greatly elongated base of the piriform gland spigots. At least parts of their body are covered with shiny scales or setae. The posterior median eyes are flat and silvery, with a triangular, egg-shaped or irregularly rectangular shape.
Spinneret morphology can help arachnologists identify the taxon of a specimen and the specific morphology of a spigot can determine its use as well. For example, flagelliform spigot is unique to Araneoidea , and another kind of spigot found in sets of three, referred to as cylindrical gland spots, are found only in females and used for making ...
Uloborus plumipes is a cribellate spider with a cribellum, a silk spinning organ which consists of one or more plates covered in thousands of tiny spigots. The fine fibres produced are combined by comblike bristles on the hind legs into slender silk threads with a fuzzy texture that are able to trap prey without the use of glue.
A study of the type species, O. striatipes, revealed that they possess a simpler and more primitive spigot system than other members of the family, as even the females possess neither tubuliform glands for cocoon production, nor triad spigots for web-building. Males and females do however have three types of silk gland, which are classified as ...
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A spigot (or "tap" or "faucet") is a valve for controlling the release of a gas or liquid. Spigot may also refer to: AT-4 Spigot, NATO reporting name for 9K111 Fagot, a Russian anti-tank missile; Spigot, the male end of a pipe designed to be connected with a spigot and socket joint; Spigot, a keyed post in the center of some vacuum tube bases
Main menu. Main menu. move to sidebar hide. Navigation Main page; Contents; ... Pages in category "Spigot mortars" The following 6 pages are in this category, out of ...