Cryphodera   

  

Contents

  

Rev 09/12/2023

  Classification Hosts
Morphology and Anatomy Life Cycle

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 Economic Importance Damage
Distribution Management

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 Feeding  References
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Classification:

      Tylenchida
       Tylenchina
        Tylenchoidea
         Heteroderidae
          Meloidoderinae

           Cryphodera Colbran, 1966

Type species of the genus: Cryphodera eucalypti Colbran, 1966

    Synonyms:
      Zelandodera Wouts, 1973

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Morphology and Anatomy:

Cystoid nematodes in which the body wall of the female does not harden into a cyst.

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 Female: No cyst stage.  

Body globose, with projecting neck; no terminal cone.  

Cuticle thick, annulated on whole body, except the vulval-anal area.

Vulva terminal; vulval lips nearly flush with body contour to slightly protruded.  

Anus at some distance from vulva. 

Eggs retained in body.  
Male: Body twisted.  

Stylet greater than 30 �m long.

Lateral field with three or four lines.  

Spicules less than 30 �m long, slightly curved, directed obliquely, with distal extremity pointed.  

No cloacal tubus.  

Tail hemispherical. 

Second-stage juveniles: Stylet length 25 to 40 µm.

Lateral field with three (more rarely, four) lines.  

Esophageal glands filling body cavity.  

Tail conical, with hyaline terminal part half of total length.  

Phasmids with lens-like structure.

[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:

 Induces a single, uninucleate giant cell feeding site in the stele of host roots (Mundo-Ocampo and Baldwin, 1984, Bajaj and Walla, 2000)..

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Hosts:

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:

Bajaj, H.K. and Wall. R.K. 2000. Host response to Cryphodera kalesari (Heteroderidae: Nematoda). Nematologia Mediterranea 28:197-199.

Ghaderi, R. 2019. An outline on distribution and hosts of the cystoid nematodes of Ataloderinae Wouts, 1973 and Meloidoderinae Golden, 1971. Zootaxa 4664:: 339�350 https://www.mapress.com/j/zt/

Luc, Maggenti & Fortuner, Rev. Nematol. 11(2):159-176 (1988).

Mundo-Ocampo M. and Baldwin, J.G. 1984. Comparison of the host response of Cryphodera utahensis with other heteroderids and a discussion on phylogeny. Proc. Helminthol. Soc. Wash. 51:25-31.

 

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Copyright © 1999 by Howard Ferris.
Revised: September 12, 2023.