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Setae on the foreleg of a mayfly. Annelid setae are stiff bristles present on the body. They help, for example, earthworms to attach to the surface and prevent backsliding during peristaltic motion. These hairs make it difficult to pull a worm straight from the ground. Setae in oligochaetes (a group including earthworms) are largely composed of ...
Calamistrum (plural calamistra): Modified setae (bristles) on the metatarsus of the fourth leg of spiders with a cribellum, arranged in one or more rows or in an oval shape, used to comb silk produced by the cribellum; see also Calamistrum; Caput (plural capita): see cephalic region
being like or having the nature of a seta or of setae; setose; setose bearing, or covered in setae. setula Diminutive of seta. A small chitinous hair or bristle. setulose bearing, or covered in setulae. shade see central shade spiracle Respiratory openings on the thorax and abdomen that allow air to enter the trachea. sporophagy feeding on ...
In fact, spiders and other arthropods have modified their cuticles into elaborate arrays of sensors. Various touch and vibration sensors, mostly bristles called setae, respond to different levels of force, from strong contact to very weak air currents. Chemical sensors provide equivalents of taste and smell, often by means of setae. [33]
Filter feeding crustaceans have setae on modified appendages that act as filters. Filter feeding may have developed in association with swimming, with early morphological adaptations occurring on the appendages of the body trunk. Subsequent adaptations appear to have favored forward filtering appendages.
The Mygalomorphae, which first appeared in the Triassic period, [96] are generally heavily built and ″hairy″, with large, robust chelicerae and fangs (technically, spiders do not have true hairs, but rather setae). [114] [105] Well-known examples include tarantulas, ctenizid trapdoor spiders and the Australasian funnel-web spiders. [13]
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Setapedites translates to "foot with setae" and derives from the characteristic setae of the outer endopod segments. The specific name abundantis translates to "abundant", referring to how common the genus is within the Fezouata Formation.