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Scopulae, or scopula pads, are dense tufts of hair at the end of a spiders's legs. They are found mostly on hunting spiders, especially Lycosidae and Salticidae. Scopulae consist of microscopic hairs, known as setae, which are each covered in even smaller hairs called setules or "end feet", resulting in a large contact area. Scopulae have been used in taxonomy to identify families, especially Mygalomorphae. Scopulae are found in addition to, not instead of, the claws at the end of each appendage, called tarsal claws.

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  • Scopula (it)
  • Scopule (fr)
  • Scopulae (en)
  • Escópula (pt)
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  • Les scopules, aussi orthographié scopula ou scopulae, sont des touffes de poils retrouvées aux extrémités des pattes de certaines araignées, formant un organe adhésif. (fr)
  • Escópula (do latim scapula, "pequena vassoura"), por vezes escopa, é a designação dada em zoologia aos tufo de pêlos densos e macios presentes nas quelíceras, maxilares e tarsos de certos aracnídeos. A estrutura serve para aumentar a adesividae a superfícies lisas verticais. (pt)
  • Scopulae, or scopula pads, are dense tufts of hair at the end of a spiders's legs. They are found mostly on hunting spiders, especially Lycosidae and Salticidae. Scopulae consist of microscopic hairs, known as setae, which are each covered in even smaller hairs called setules or "end feet", resulting in a large contact area. Scopulae have been used in taxonomy to identify families, especially Mygalomorphae. Scopulae are found in addition to, not instead of, the claws at the end of each appendage, called tarsal claws. (en)
  • Con il termine scopula, più usato il plurale scopulae, si denotano quei ciuffi di peli presenti alle estremità delle zampe dei ragni. Consistono in microscopici peli, ognuno dei quali suddiviso in setole ancora più fini e ramificate in modo da essere distribuiti e quindi occupare una superficie cospicua. Se il ragno potesse afferrare qualcosa con questo tipo di presa aderente, riuscirebbe a sollevare circa 170 volte il proprio peso. (it)
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  • Les scopules, aussi orthographié scopula ou scopulae, sont des touffes de poils retrouvées aux extrémités des pattes de certaines araignées, formant un organe adhésif. (fr)
  • Scopulae, or scopula pads, are dense tufts of hair at the end of a spiders's legs. They are found mostly on hunting spiders, especially Lycosidae and Salticidae. Scopulae consist of microscopic hairs, known as setae, which are each covered in even smaller hairs called setules or "end feet", resulting in a large contact area. When the scopulae are splayed out and placed against a surface, remarkable adhesion is produced due to the accumulation of adhesion of each individual setule interacting with a substrate. The adhesion may be due to the excretion of liquid from adhesive pads, although setae can adhere in both dry and wet modes. This enables spiders with scopulae to climb even sheer, smooth surfaces such as glass. The adhesion is so great that the spider could grip using this force and support 170 times its own weight. Possible physical mechanisms may include capillary, electrostatic, viscous, or Van der Waals force. (Niederegger et al 2002; Betz and Kölsch, 2004) Scopulae have been used in taxonomy to identify families, especially Mygalomorphae. Scopulae are found in addition to, not instead of, the claws at the end of each appendage, called tarsal claws. (en)
  • Con il termine scopula, più usato il plurale scopulae, si denotano quei ciuffi di peli presenti alle estremità delle zampe dei ragni. Consistono in microscopici peli, ognuno dei quali suddiviso in setole ancora più fini e ramificate in modo da essere distribuiti e quindi occupare una superficie cospicua. Nel momento in cui le scopulae sono rivolte tutte verso l'esterno della punta delle zampe e collocate contro una superficie, consentono al ragno un'adesione alla stessa molto forte dovuta alle forze di van der Waals, che sono forze attrattive tenaci che agiscono fra le molecole.Questa forza è tale che consente ai ragni di scalare senza sforzo qualsiasi tipo di superficie, anche liscia come il vetro e di appendersi ai soffitti. Se il ragno potesse afferrare qualcosa con questo tipo di presa aderente, riuscirebbe a sollevare circa 170 volte il proprio peso. (it)
  • Escópula (do latim scapula, "pequena vassoura"), por vezes escopa, é a designação dada em zoologia aos tufo de pêlos densos e macios presentes nas quelíceras, maxilares e tarsos de certos aracnídeos. A estrutura serve para aumentar a adesividae a superfícies lisas verticais. (pt)
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