Rev 02/05/2022

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Morphology and Anatomy Life Cycle
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Zetalaimus Siddiqi, 1982

Type species of the genus: Zetalaimus blepheronchus Siddiqi, 1982

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Morphology and Anatomy:

Differs from other genera of the subfamily by the combination of the rounded head, flsk-like stoma, flanged odontophore, pyriform esophageal and enlargement single prodelphic gonad in female.



  • Monodelphic, prodelphic.
  • Vulva transverse,

  Ref: Andrassy, 2009

Zetalaimus blepheronchus A,B,G Female head; C Female whole body; D Male tail; E., I: Anterior and esophagus detail; F: Prodelphic female gonad
Adapted from Siddiqi (1982)



  • Diorchic, testes outstretched.
  • Ventromedian supplements 1.
Body size range for the species of this genus in the database - Click:
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Reported from Africa and Central America (Costa Rica).



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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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Andrassy, I. 2009. Free-living Nematodes of Hungary (Nematoda Errantia) Vol. 111. Humgarian Natural History Museum, Budapest. 508p.

Siddiqi, M.R. 1982. Three new species of Aculonchus Gen. n. and Zetalaimus blepheronchus gen. n., sp. n.(Dorylaimida: Belonenchinae). Indian J. Nematology 12:312-319


Siddiqi, M.R. 1995. Nematodes of tropical rainforests. 5. Seven new genera and forty two new species of dorylaims. Afro-Asian J. Nematology 5: 72-109.

Yeates, G.W., T. Bongers, R. G. M. De Goede, D. W. Freckman, and S. S. Georgieva. 1993. Feeding habits in soil nematode families and genera—An outline for soil ecologists. Journal of Nematology 25:315-331.

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Copyright © 1999 by Howard Ferris.
Revised: February 05, 2022.