, Volume 104, Issue 2, pp 96–104 | Cite as

The spinning apparatus of Uloboridae in relation to the structure and construction of capture threads (Arachnida, Araneida)

  • H. M. Peters


Besides the two axial fibers and the mass of cribellum fibrils, a third component is present in the capture threads of uloborids. This is a substructure originating from the paracribellum. It probably helps to fasten the axial fibers in their position. The axial fibers are secreted from the two glandulae pseudoflagelliformes whose spigots are situated on the posterior spinnerets. It is hypothesized that the cribellum fibrils become jammed and thus fixed between the axial fibers by periodical abduction and adduction of these spinnerets.


Fibril Developmental Biology Axial Fiber Capture Thread 
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Copyright information

© Springer Verlag 1984

Authors and Affiliations

  • H. M. Peters
    • 1
  1. 1.Abteilung VerhaltensphysiologieInstitut für Biologie III der Universität, Lehrstuhl ZoophysiologieTübingen 1Federal Republic of Germany

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