Punctodera

 

Contents

 

Rev 05/16/2006

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

Tylenchida
       Tylenchina
        Tylenchoidea
         Heteroderidae
          Heteroderinae
           Punctodera (Mulvey & Stone, 1976)
    Synonyms:
      None.

Refer to Subfamily Diagnostics (Heteroderinae) for taxonomic history and distinctions among related genera.
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Morphology and Anatomy:

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Female:  Cyst stage present.

Body globose, spherical to pear-shaped with short neck and no terminal cone.  

Cuticle thick, with superficial, reticulate pattern; subcuticle with punctation.  D-layer present; subcrystalline layer present, thick.  

Vulva terminal; vulval slit less than 5 µm long, surrounded by a circular circumfenestra; no perineal papillae; no underbridge; no bullae.  

Anus surrounded by circular (anal) fenestra.  

Eggs retained in body (no egg mass).  

Males:  Body twisted.

Lateral field with four lines.  

Spicules greater than 30 µm long, slightly curved, distally pointed.  

No cloacal tube.  

Tail very short, rounded. 

Second-stage juveniles:

Stylet less than 30 µm long.  

Lateral field with four lines.  

Esophageal glands fill body cavity.  

Tail conical, to conical-effilated with long, hyaline, terminal portion.  

Phasmids punctiform.  


[Ref: Luc, Maggenti & Fortuner, (1988).]

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Distribution:

 

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Economic Importance:

 

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Feeding:

Nurse cell system: A syncytium.      

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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:

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

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Copyright © 1999 by Howard Ferris.
Revised: May 16, 2006.