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
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology

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.