Cephalenchus driekieae




Rev 05/03/2022

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Cephalenchus Menu Economic Importance Damage
Distribution Management
Return to Tylenchidae Menu Feeding  References

Go to Nemaplex Main Menu

  Go to Dictionary of Terminology


Cephalenchus driekieae  Rashidifard, Du Preez, Abolafia & Pedram 2020


Back to Top

Morphology and Anatomy:


Molecular phylogenetic analyses using the partial small and large subunit ribosomal DNA gene (SSU and LSU rDNA D2-D3) sequencesindicate that the species clusters with other Cephalenchus spp. in both SSU and LSU trees, and is consistents with the  monophyly of the genus.


  • Body tapering slightly toward s then with long filiform tail.

  • Cuticle thin and coarsely annulated, annuli .

  •  Lateral fields with four longitudinal incisures, the outer ones ending at proximal part of tail.

  • Cephalic region rounded, framework wesakly sclerotized, separated from the rest of the body by a constrictionn.

  •  Amphidial openings dorso-ventrally oriented on labial disc.

  • Four cephalic papillae on the corners of the labial disc. Oral disc small and rounded.

  • Stylet with a conus ca. 45% of its total length, a cylindrical shaft, and anchor-shaped knobs.

  • DGO close behind stylet knobs.

  • Pharynx with wide, short, muscular procorpus, about one stylet length.

  • Metacorpus pyriform, a small central valve.

  • Iisthmus remarkably narrow, slender

  • Pharyngeal glands with long dorsal overlap over the intestine,

  • Nerve ring at around middle isthmus, at about 70% of the neck length.

  •  Excretory pore at anterior half of the pharyngeal glands, or at ca 90% of the neck length.

  • Hemizonid discernible, slightly anterior to the excretory pore.

  •  Rectum about as long as anal body width. Anus distinctive.

  • Reproductive system monodelphic-prodelphic,ovary outstretched, and oocytes behind the germination zone in single row;

  • Sspermatheca spherical and empty; uterus with tubular distal part (uterine crustaformeria) and quadricolumellate,

  • Postuterine sacspacious, about as long as vulval body width,

  • Vagina perpendicular to body axis, 31 to 43% of corresponding body width long

  • Vlva a small transverse slit and vulval flaps visibly very small.

  • Tail elongated and filiform, its tip finely rounded.


  • Not found

Ref: Rashidifard et al., 2020

Refer to subfamily diagnosis (Tylodorinae)

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

Back to Top


Collected from soil around grass roots in South Africa.

Back to Top

Economic Importance:


Back to Top





 Back to Top




For an extensive host range list for this species, click


Back to Top

Life Cycle:


Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters



Back to Top



Back to Top


For plants reported to have some level of resistance to this species, click


Back to Top


Rashidifard, M., Du Preez, G., Abolafia, J., Peram, M. 2020. Cephalenchus driekieae n. sp. (Nematoda: Tylenchidae) from South Africa, a new member of the genus with a long pharyngeal overlap. J. Nematology 52:| DOI: 10.21307/jofnem-2020-031

Back to Top

Copyright © 1999 by Howard Ferris.
Revised: May 03, 2022.