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Le filet-piège de la larve de Plectrocnemia conspersa (Trichopteres, Polycentropodidae)

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Summary

The catching-net of P. conspersa larva was studies with particular reference to: structure, building, larval activity inside it and its function in prey catching.

The microscopic and macroscopic structure of this catching-net is similar to that Neureclipsis larvae, with an open-ended tunnel and two funnel shaped openings, but its shape is less regular.

The building of this net lasts about four to six hours. After a wandering period, the larva first builds the open-ended tunnel and the two openings.

Most of the time, the larva lives inside the open-ended tunnel, but it can also crawl into the entrances. Its activity does seem to be related to a diel periodicity.

During the catching process, the chief function of the net is detection, after which the prey is taken in the same way as in a spider's web.

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Authors and Affiliations

  1. Section de Biologie Animale et Zoologie, Lyon, France

    H. Tachet

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  1. H. Tachet
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Tachet, H. Le filet-piège de la larve de Plectrocnemia conspersa (Trichopteres, Polycentropodidae). Oecologia 8, 78–92 (1971). https://doi.org/10.1007/BF00345628

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  • DOI: https://doi.org/10.1007/BF00345628

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