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- Cribellum abstract "The cribellum is a silk spinning organ found in certain spiders. Unlike normal spinnerets, the cribellum consists of one or more plates covered in thousands of tiny spigots. These spigots produce extremely fine fibers which are combed out by the spider's calamistrum, producing silk with a wooly texture. The fibers are so small in diameter that prey insects easily become entangled in them, without any glue needed. The spiders then bite them before they can escape.The cribellum is a functional homolog of the anterior median spinnerets of Mesothelae and Mygalomorphae, which do not have a cribellum.The presence or absence of a cribellum is used to classify araneomorph spiders into the cribellate and ecribellate (not cribellate) type. The distinction can be used to study evolutionary relationships. However, in 1967 it was discovered that there are many families with both cribellate and ecribellate members (Lehtinen, 1967). Today, it is believed that the precursor of all Araneomorphae was cribellate (symplesiomorphy), and that this function was lost in some araneomorph spiders secondarily (Coddington & Levy, 1991). Many of these still retain a colulus, which is thought to be a reduced cribellum, and is of unknown function. However, some \"ecribellate\" spiders seem to have evolved independently, without cribellate precursors (Foelix, 1979).Only about 180 genera in 23 families (1991) still contain cribellate members, although the diverse Australian cribellate fauna is still mostly undescribed. However, that fauna may be an example of high diversity in Australian animals that are only relicts in other regions of the world, like the marsupials (Coddington & Levy, 1991).Cribellate taxa are not very speciose, and for nearly all cribellate-ecribellate sister clades the cribellate lineage is less diverse (Coddington & Levy, 1991), for example: Haplogynae: cribellate Filistatidae ca. 100 species, all others (mostly ecribellate) ca. 3,000 species Entelegynae: cribellate Deinopoidea ca. 320 species, ecribellate Araneoidea ca. 11,000 species↑".
- Cribellum thumbnail Progradungula_otwayensis_immature_male_with_catching_ladder.jpg?width=300.
- Cribellum wikiPageExternalLink arac_27_01_0053.pdf.
- Cribellum wikiPageExternalLink JoA_v21_p161.pdf.
- Cribellum wikiPageExternalLink JoA_v22_p73.pdf.
- Cribellum wikiPageExternalLink catching.htm.
- Cribellum wikiPageExternalLink web-evolve.html.
- Cribellum wikiPageExternalLink webthread.html.
- Cribellum wikiPageID "5863253".
- Cribellum wikiPageLength "5423".
- Cribellum wikiPageOutDegree "45".
- Cribellum wikiPageRevisionID "682689218".
- Cribellum wikiPageWikiLink Adhesive.
- Cribellum wikiPageWikiLink Agelenidae.
- Cribellum wikiPageWikiLink Amaurobiidae.
- Cribellum wikiPageWikiLink Amphinectidae.
- Cribellum wikiPageWikiLink Araneoidea.
- Cribellum wikiPageWikiLink Araneomorphae.
- Cribellum wikiPageWikiLink Austrochilidae.
- Cribellum wikiPageWikiLink Calamistrum.
- Cribellum wikiPageWikiLink Category:Spider_anatomy.
- Cribellum wikiPageWikiLink Clade.
- Cribellum wikiPageWikiLink Crevice_weaver.
- Cribellum wikiPageWikiLink Deinopidae.
- Cribellum wikiPageWikiLink Deinopoidea.
- Cribellum wikiPageWikiLink Diatom.
- Cribellum wikiPageWikiLink Dictynidae.
- Cribellum wikiPageWikiLink Entelegynae.
- Cribellum wikiPageWikiLink File:Progradungula_otwayensis_immature_male_with_catching_ladder.jpg.
- Cribellum wikiPageWikiLink Gradungulidae.
- Cribellum wikiPageWikiLink Haplogynae.
- Cribellum wikiPageWikiLink Intertidal_spider.
- Cribellum wikiPageWikiLink Lampshade_spider.
- Cribellum wikiPageWikiLink Lehtinen.
- Cribellum wikiPageWikiLink Marsupial.
- Cribellum wikiPageWikiLink Mesothelae.
- Cribellum wikiPageWikiLink Miturgidae.
- Cribellum wikiPageWikiLink Mygalomorphae.
- Cribellum wikiPageWikiLink Nicodamidae.
- Cribellum wikiPageWikiLink Oecobiidae.
- Cribellum wikiPageWikiLink Psechridae.
- Cribellum wikiPageWikiLink Silk.
- Cribellum wikiPageWikiLink Spider.
- Cribellum wikiPageWikiLink Spinneret_(spider).
- Cribellum wikiPageWikiLink Stiphidiidae.
- Cribellum wikiPageWikiLink Symplesiomorphy.
- Cribellum wikiPageWikiLink Taxon.
- Cribellum wikiPageWikiLink Tengellidae.
- Cribellum wikiPageWikiLink Titanoecidae.
- Cribellum wikiPageWikiLink Uloboridae.
- Cribellum wikiPageWikiLink Velvet_spider.
- Cribellum wikiPageWikiLink Wandering_spider.
- Cribellum wikiPageWikiLink Zoropsidae.
- Cribellum wikiPageWikiLinkText "Cribellum".
- Cribellum wikiPageWikiLinkText "colulus".
- Cribellum wikiPageWikiLinkText "cribellate".
- Cribellum wikiPageWikiLinkText "cribellum".
- Cribellum wikiPageWikiLinkText "ecribellate".
- Cribellum wikiPageUsesTemplate Template:Spider_nav.
- Cribellum subject Category:Spider_anatomy.
- Cribellum hypernym Organ.
- Cribellum type AnatomicalStructure.
- Cribellum type Redirect.
- Cribellum comment "The cribellum is a silk spinning organ found in certain spiders. Unlike normal spinnerets, the cribellum consists of one or more plates covered in thousands of tiny spigots. These spigots produce extremely fine fibers which are combed out by the spider's calamistrum, producing silk with a wooly texture. The fibers are so small in diameter that prey insects easily become entangled in them, without any glue needed.".
- Cribellum label "Cribellum".
- Cribellum sameAs Q1139884.
- Cribellum sameAs Cribellate_Spinnen.
- Cribellum sameAs Cribelo.
- Cribellum sameAs Cribellum.
- Cribellum sameAs 篩板_(クモ).
- Cribellum sameAs Zeefplaat_(spin).
- Cribellum sameAs Cribelo.
- Cribellum sameAs m.0f9p13.
- Cribellum sameAs Q1139884.
- Cribellum wasDerivedFrom Cribellum?oldid=682689218.
- Cribellum depiction Progradungula_otwayensis_immature_male_with_catching_ladder.jpg.
- Cribellum isPrimaryTopicOf Cribellum.