Rev 11/19/2019

Burrowing Nematode Classification Hosts
Morphology and Anatomy Life Cycle
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Distribution Management
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           Radopholus (Thorne, 1949)

           Radopholoides (de Guiran, 1967) - (but see Radopholoides page)
           Neoradopholus (Khan and Shakil, 1973)

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Morphology and Anatomy:


Female:  Similar to Pratylenchus in general shape and size.  

Secondary sexual dimorphism strongly marked.  

Deirids absent.  

Two female genital branches equally developed (diovarial, amphidelphic) or, more rarely, posterior branch more or less reduced, degenerated and nonfunctional. 

Female lip area low, not offset; by SEM, lateral sectors narrow, but expanded posteriorly on succeeding lip annules;  submedial sectors completely fused together and with the labial disc.  

Esophageal glands in line, with long dorsal overlap of the intestine. 

Esophago-intestinal valve not well developed.  

Tail long (c'=2.4), tapering to terminus rounded or almost pointed.

Phasmids at mid-tail, or slightly anterior. 


Males:  Lips high, rounded, set-off; cephalic sclerotization weak,

Stylet reduced; basal knobs vestigial or absent.

Esophagus reduced. 

Gubernaculum slightly protruding from cloaca

Caudal alae subterminal or, more rarely, terminal. 

Sperms usually rod-like.

Male with bursa.  

[Ref: Luc,  (1987) and H. Ferris.]

Body size range for the species of this genus in the database - Click:
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Nine of the 11 described species are reported from Australia.

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Economic Importance:

A-rated pests in California.

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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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 [Ref: Luc, Rev. Nematol. 10(2):203-208 (1987) and H. Ferris.]

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Copyright © 1999 by Howard Ferris.
Revised: November 19, 2019.