Ogma octangularis

Ogma octangularis		Contents		Rev 04/06/2021
		Classification		Hosts
		Morphology and Anatomy		Life Cycle
Return to Ogma Menu		Economic Importance		Damage
		Distribution		Management
Return to Criconematidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

      Tylenchida
       Tylenchina
        Criconematoidea
         Criconematidae
          Criconematinae

Ogma octangularis (Cobb, 1914) Schuurmans Stekhoven & Teunissen, 1938

Synonyms

Criconema octangularis

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Morphology and Anatomy:

Body ventrally curved when hyeat relaxed
Cuticle with retrorse annuli with 8 longitudinal rows orf rounded, wedge-shaped scales.
Head with two annuli, not retrorse or ornamented, the first plate-like and directed forwad.
Large, rounded submedian lobes.
Stylet robust, large knobs.
Ovary often with two flexures
Vulval lips slightly protruding, the anterior with two conoid points.
Tail conical.

Male with spicules 28-30 um long..

Source: Geraert, 2010.

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

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Distribution:

Worldwide

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Economic Importance:

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Feeding:

Ectoparasite of mosses and probably of plant roots.

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Hosts:

Sphagnum moss is an excellent host.

For an extensive host range list for this species, click

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Life Cycle:

Ecophysiological Parameters:

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

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Damage:

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Management:

Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

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

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References:

Geraert, E. 2010. The Criconematidae of the World: Identification of the Family Criconematidae. Academia Press, Gent. 615p.

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Copyright © 1999 by Howard Ferris.
Revised: April 06, 2021.