Punctodera

 

Contents

 

Rev 11/22/2022

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Punctodera 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
          Punctoderinae


           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:

.

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 vulval cone'  no perineal papillae; no underbridge; no bullae.  

Anus surrounded by a separate 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).]



Body size range for the species of this genus in the database - Click:
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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:

Species of Punctodera are reported mainly from grasses and maize.

 
For an extensive host range list for this genus, click
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Life Cycle:

For Ecophysiological Parameters for this genus, click 
 
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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: November 22, 2022.