Cribelo




O cribelo é um órgão das aranhas que se encontra frontalmente às fiandeiras e se presume que seja o homólogo do oitavo par de fiandeiras das aranhas primitivas, Mesothelae e Mygalomorphae. Produz uma seda que tem uma estrutura similar a lã.[1]


As aranhas que possuem cribelo, denominam-se cribeladas e apresentam calamistro, um conjunto de pelos especiais, que se encontram dispostos em fila, no metatarso do quarto par de patas, que é altamente variado tanto em aparência como em desenvolvimento. As aranhas sem cribelo designam-se por acribeladas.



Referências |



  • Eberhard, William G. and Pereira, Flory. 1993. Ultrastructure of cribellate silk of nine species in eight families and possible taxonomic implications (Araneae: Amaurobiidae, Deinopidae, Desidae, Dictynidae, Filistatidae, Hypochilidae, Stiphidiidae, Tengellidae). Journal of Arachnology, 21(3): 161-174. PDF

  • Huber, B.A. (1994): Spermophore morphology reveals a new synapomorphy of Oecobius and Uroctea (Araneae, Oecobiidae). Journal of Arachnology, 22: 73-74. PDF

  • Griswold, C.E., Coddington, J.A., Platnick, N.I. and Forster, R.R. (1999). Towards a Phylogeny of Entelegyne Spiders (Araneae, Araneomorphae, Entelegynae). Journal of Arachnology, 27: 53-63. PDF


Notas




  1. ↑ «Cribelo». Michaelis On-Line. Consultado em 7 de agosto de 2017 



Ligações externas |



  • Morfologia das aranhas

  • Sedas de aranhas





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