preanal ring

preanal ring
(ARTHROPODA: Diplopoda)
Post-segmental ring ending trunk; usually has a tail, anal valves and scales; forms the telson.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • telson — n. [Gr. telson, end] 1. (ARTHROPODA) The terminal portion of an arthropod body (not considered a true somite), usually containing the anus; the periproct. 2. (ARTHROPODA: Chelicerata) In scorpions, the distal stinging caudal spine. 3. (ARTHROPODA …   Dictionary of invertebrate zoology

  • telotroch — n. [Gr. telos, end; trochos, wheel] 1. (ANNELIDA: Polychaeta) The preanal girdle of cilia near the posterior end. 2. (PHORONIDA) A ciliary ring on the posterior of the trunk, probably a locomotor organ …   Dictionary of invertebrate zoology

  • annelid — /an l id/, n. 1. any segmented worm of the phylum Annelida, including the earthworms, leeches, and various marine forms. adj. 2. belonging or pertaining to the Annelida. Also, annelidan /euh nel i dn/. [1825 35; see ANNELIDA] * * * Any member of… …   Universalium

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