Verutus californicus

  

Contents

  

Rev 12/09/2022

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Verutus Menu Economic Importance Damage
Distribution Management
Return to Heteroderidae Menu Feeding  References
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Classification:

      Tylenchida
       Tylenchina
        Tylenchoidea
         Heteroderidae
          Veruinae


           Verutus californicus Baldwin, Bernard & Mundo-Ocampo, 1989


    Synonyms:
      None.

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Morphology and Anatomy:

.

Females: No cyst stage.  Body saccate, sausage-shaped, or kidney-shaped. 

Cuticle thick, annulated over total body length; D-layer absent; multiple B-layer present; subcrystalline layer present [For information on ultrastructure of the cuticle and definition of its layers, see Shepherd, Clark & Dart (1972) and Baldwin (1983)].  

Vulva submedian, large, with protruberant vulva lips.  

No phasmids.  

Remnant of tail very short to absent.

Eggs not retained in body, but deposited individually, without gelatinous matrix.  

Males: Body not twisted. 

Stylet under 30 µm long.

Lateral field with four lines.

Spicules strong, slightly curved.  

No phasmids.  

Tail short.  

Second-stage juveniles: Lateral field with four lines.

Esophageal glands filling body cavity.  

Tail pointed, with long, hyaline, terminal part. 

Phasmids punctiform, small, devoid of lens-like structure.  

[Luc, Maggenti & Fortuner (1988).]

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

Type locality: Merced River, Yosemite Valley, California.

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Economic Importance:

 

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Feeding:

Nurse cell system is a small syncytium.      

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Hosts:

 Carex sp.

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:

Baldwin, J.G., Bernard, E.C. & Mundo-Ocampo, M. 1989. J. Nematology 21:48-68.

Luc, Maggenti & Fortuner, Rev. Nematol. 11:159-176 (1988).]

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Copyright © 1999 by Howard Ferris.
Revised: December 09, 2022.