Hystrignathus

  

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Rev 05/26/2025

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Hystrignathus Menu Ecosystem Functions and Services
Distribution Management
Return to Hystrignathidae Menu Feeding  References
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Classification:

Enoplea
Rhabditida
    Spirurina
                             Thelastomatoidea
Hystrignathidae

Hystrignathus Leidy, 1850

Type species of the genus: Hystrignathus rigidus Leidy, 1850

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Morphology and Anatomy:

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  • Cuticle in cervical region with transverse rows of spines;  first row with 16 elements .
  •  Cephalic region formed by two annules
  • Esophageal corpus divided, posterior portion clavate .

    Female:      
  •  Didelphic
  • Tail region subulate to attenuated . 
  • Comments: The only other didelphic hystrignathid with 16 spines in the first row of cervical spines is Soaresnema
Males:

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

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Distribution:

Reported from Australia, North and South America, Africa and Madagascar .

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Feeding:

Food Sources and Feeding strategies for the genus Hystrignathus

Intestinal parasites of insects, especially Coleoptera.
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Biology and Ecology:
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Life Cycle:

For Ecophysiological Parameters for this genus, click 
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Ecosystem Functions and Services:

 

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Management:

 

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References:

Adamson, M.L. and Van Waerebeke, D. 1992. Revision of the Thelastomatoidea, Oxyurida of invertebrate hosts III . Hystrignathidae. Systematic Parasitology 22:111-130

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Copyright © 1999 by Howard Ferris.
Revised: May 26, 2025.