Amphisbaenema   

 

Contents

 

Rev 07/28/2020

  Classification Hosts
Morphology and Anatomy Life Cycle

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Economic Importance Damage
Distribution Management
Return to Criconematidae Menu Feeding  References
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Classification:

Tylenchida
       Tylenchina
        Criconematoidea
         Criconematidae
          Blandicephalanematinae

           Amphisbaenema Orton Williams, 1982  

    Synonyms:
      None.

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Morphology and Anatomy:

.

Female: Body short, stout, 0.36 to 0.56 mm long. 

70 to 80 annules, strongly retrorse.  

Head offset, with one small, reduced, basal annule, bearing a very large, rounded lip region with 6 pseudolips, the lateral pseudolips larger..  

Lip region has six large lips, the two lateral lips with spacious cavities in their sclerotization and extending beyond it.  

Stylet 63 to 90  µm long, flexible.  

Body marked by 8 to 28 rows of scales, with a thick basal portion and thin, elongated, drawn-out posterior region to form a spine.  A very light, delicate "fringe" of cuticle may be present.  

Tail conoid, with the scales more enlarged.

      

Male: Three lateral lines.

Spicules 48  µm long.

Caudal alae small or lacking.

Tail conoid.

Juvenile: Known only for B. serratum.  

Head and tail resemble adult female.  

Cuticular ornamentation as ten rows of scales at midbody, decreasing in number anteriorly and posteriorly.  Each scale with flat pentagonal-shaped anterior base, rounded U-shaped posterior part with three to five fine serrations at tip.

[Raski and Luc, (1987), Geraert (2010)]

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:

 

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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:

Geraert, E. 2010. The Criconematidae of the World. Identification of the family Criconematidae (Nematoda). Academia Press, 615p.

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

 

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Copyright  1999 by Howard Ferris.
Revised: July 28, 2020.