Family Tylenchulidae

                                 Revised 01/27/26

Classification:

Phylum Nematoda

  Class Chromadorea

    Subclass Chromadoria

Order Rhabditida

SuborderTylenchina

                        Superfamily Tylenchuloidea
        

             Tylenchulidae Skarbilovich, 1947

Former Synonyms:
      Paratylenchidae Thorne, 1949
      Sphaeronematidae Raski & Sher, 1952
      Meloidoderitidae Kir'yanova & Pogosyan, 1973
      Tylenchocriconematidae Raski & Siddiqui, 1975

Key to the subfamilies of Tylenchulidae (Ghaderi et al., 2016)

1. Uterine walls form a protective cystoid body.......................................................................................Meloidoderitinae

    Uterine walls do not form a protective cycteoid body............................................................................2

2. Female usually vermiform; if saccata then elongate obese; stylet long, usually >15um wuth long conus....Paratylenchinae

    Female subspherical to spherical, or elongate obese with body enlarging mostly dorsall, stylet short ........3

3. Adult female without post-vulval region; excretory pore in pharyngeal region..........................................Sphaeronematinae

    Adult female with distinct post-vulval region; excretory pore posterior to pharyngeal region....................Tylenchulinae

Morphology and Anatomy:

  • Female body slender, swollen or globose. 
  • Cuticle thin and annulated except swollen forms may have fine punctations or minute tubercles. 
  • Lateral field present, not visible on swollen forms. 
  • Labial framework weak. 
  • Deirids rarely present. 
  • Stylet delicate. 
  • Esophagus with amalgamated pro-metacorpus or with slightly swollen procorpus, distinct metacorpus,
         isthmus, and pyriform glandular region. 
  • Male feeding apparatus degenerate.
  • Caudal alae absent in males. 
  • Near sedentary to sedentary obligate parasites of higher plants.


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

    References

    Maggenti, Luc, Raski, Fortuner & Geraert, Rev. Nematol. 10(2):135-142 (1987).

    Ghaderi, R., Geraert, E., Karegar, A. 2016. TheTylenchulidae of the World. Academia Press, Ghent, Belgium

    Raski, D.J. and Luc, M. 1987. A reapraisal of Tylenchina (Nemata) 10. The superfamily Criconematidea Taylor, 1936., Rev. Nematol. 10: 409-444..

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