Onyx

 

Contents

  

Rev: 07/28/2026

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Onyx Menu Ecosystem Functions and Services
Distribution Management
Return to Desmodoridae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology

Classification:

Chromadorea
  Chromadoria
   Desmodorida
Desmodorina
             Desmodoroidea
                Desmodoridae
     Spiriniinae
  •         Onyx Cobb, 1891
    •       Type species of the genus: Onyx perfectus Cobb, 1891

        Synonyms:

    Oistolaimus Ditlevsen, 1921

    Back to Top

    Morphology and Anatomy:

     

    Females:

    • Didelphic-amphidelphic

    Ref: Tchesunov, 2013
     
    Males:  
    • Monorchic
    • Pre cloacal supplementary organs as cuticularized S-shaped tubes.

    Body size range for the species of this genus in the database - Click:
    Back to Top

    Distribution:

    Free-living marine nematodes

     
    Back to Top

    Feeding:

    Food Sources and Feeding strategies for the genus Onyx

    Probably epistrate feeders

    Back to Top

    Biology and Ecology:

     

    Back to Top

    Life Cycle:

     
     
    For Ecophysiological Parameters for this genus, click 
    Back to Top

    Ecosystem Functions and Services:

     

    Back to Top

    Management:

     
    Back to Top

    References:


    Tchesunov. A.V. 2013. 7.13 Order Desmodorida de Coninck, 1965 In Schmidt-Rheas and de Gruyter, W. Handbook of Zoology.Gastrocticha, Cycloneuralia, Gnatifera. Volume 2: Nematoda
    Back to Top
    Copyright © 1999 by Howard Ferris.
    Revised: July 28, 2026.