Cacopaurus   

 

Contents

 

Rev 09/12/2023

  Classification Hosts
Morphology and Anatomy Life Cycle

Return to Cacopaurus Menu

Economic Importance Damage
Distribution Management
Return to Tylenchulidae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology

  

Classification:

Tylenchida
       Tylenchina
        Tyl;enchuloidea
         Paratylenchidae
          Paratylenchinae

Cacopaurus Thorne, 1943

Type specie of the genus: Cacopaurus pestis, Thornes. 1943

Synonyms

Paratylenchus (Thorne, 1943) Goodey, 1963.  However, Raski and Luc (1987) disagreed with the synonymy  and proposed retaining Cacopaurus as a valid genus.

Cacopaurus is distinguished from the genus Gracilacus (Raski, 1962) by:

  1. the elongation of the body posterior to the vulva, compared to the very short and blunt tail in Cacopaurus.
  2. the finely annulated cuticle without ornamentation.

(Raski, 1976)


Back to Top

Morphology and Anatomy:

.

Female: Body very small (0.2 to 0.3 mm), cylindroid-obese (a = 5 to 8). 

Cuticle thin, bearing minute tubercles.  

Lateral field with four lines, ornamented with rows of tubercles.  

Labial framework weakly developed.  

Stylet very long (92 to 102 µm) in regard to body size.  

Vulva very posteriorly situated; postvulval part very short, conoid.  

Uterus with thick wall.                                                               

Male: No stylet.

Esophagus degenerated. 

Caudal alae weakly developed, adanal.

Juvenile: Stylet well developed.

[Ref: Raski & Luc,  (1987).] 


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

Distribution:

 

Back to Top

Economic Importance:

D-rated pest in California Nematode Pest Rating System.

Back to Top

Feeding:

Females have long stylet, swell when mature, and probably do not move once they start feeding - sessile.  

Back to Top

Hosts:

Described by Thorne on Walnut.
  
For an extensive host range list for this genus, click
Back to Top

Life Cycle:

For Ecophysiological Parameters for this genus, click 
 
Back to Top

Damage:

 

Back to Top

Management:

 

Back to Top

References:

Ghaderi, R., Geraert, E., Karegar, A. 2016. TheTylenchulidae of the World. Academia Press, Ghent, Belgium

Raski, D.J. and Luc, M. 1987. A reapraisal of Tylenchina (Nemata) 10. The superfamily Criconematidea Taylor, 1936., Rev. Nematol. 10: 409-444..

Raski, D.J. 1976. Revision of the Genus Paratylenchus Micoletzky, 1922 and Descriptions of New Species. Part III of Three parts--Gracilacus. J. Nematology 8:97-115.

Thorne, G. 1943. Cacopaurus pestis n.g, n.sp. (Nematoda: Criconematoinae), a destructive parasite of the walnut Juglans regia Linn.  Proc. Helminth. Soc. Wash 10:78-83.

 

Back to Top

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