Scutylenchus		Contents		Rev 12/17/2024
A Stunt Nematode		Classification		Hosts
		Morphology and Anatomy		Life Cycle
Return to Scutylenchus Menu		Economic Importance		Damage
		Distribution		Management
Return to Merliniidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadorea
       Rhabditida
       Tylenchina
        Tylenchoidea

           Merliniidae

             Merliniinae

          Scutylenchus Jairajpuri, 1971

Type species of the genus: Scutylenchus mamiillatus (Tobar Jimenez, 1966) Jairajpuri, 1971

The genus has been considered by some authorities to be a synonym of Geocenamus (e.g. Geraert, 2011).

    Synonyms:
      None.
  

A Stunt nematode

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Morphology and Anatomy:

• All known species have 6 lines in the lateral field, except for S. quercinus which has four.**
• Cuticle well striated  and with longitudinal lines that create a tessellated appearance.
• Laboal region offset, annulated and with 6 longitudinal grooves
• Median bulb oval, terminal bulb pyriform
• Phasmid somewhat enlarged, resembling a scutellum; hence the genus name

Xu et al (2012) reported 4 lines in the lateral field of S. nyungsugae but that is in conflict with the 6 lines reported in the orioginal description of that species by Choi and Geraert (1993).

Female:

• Didelphic-amphidelphic
• Female tail conoid-subcylindrical

Ref Andrassy, 2007; Sheikhzadeh et al., 2022

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Distribution:

Stunt nematodes are distributed throughout the world.

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Economic Importance:

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Feeding:

  Migratory ectoparasites of plant roots.

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Hosts:

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Life Cycle:

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Damage:

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Management:

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References:

Andrassy, I. 2007. Free-living nematodes of Hungary, II. Hungarian Natural History Museum, Budapest,

Choi, Y.E. & Geraert, E. 1993. Nematodes associated with forest trees in Korea. II: Three new and one described species of Geocenamus with a note on the en face view in the genus. Nematologica 39: 431-449. DOI: 10.1163/ 187529293X00385

Geraert, E. 2011, The Dolichodirudae of the World . Academia Press, Gent, Belgium.

Sheikhzadeh, S., Mobasseri, M., Valizadeh, A., Pedram, M. 2022. Description of Scutylenchus quercinus n.sp. (Nematode: Tylenchomorpha) from Asalem forests, north Iran. Nematology 24:531-542.

Siddiqi, M.R. (2000). Tylenchida: parasites of plants and insects, 2nd edition. Wallingford, UK, CAB International

Xu, C-L., Xie, H., Zhao, C-B., Zhang, S-B., Su, X-M. 2012. Review of the genus Scutylenchus Jairajpuri, 1971 (Nematoda: Tylenchida), with description of Scutylenchus dongtingensis n. sp. from rhizosphere soil of grass in China. Zootaxa 3437:32-42.

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Copyright © 1999 by Howard Ferris.
Revised: December 17, 2024.