Longidorus africanus




Rev 11/19/2019

 Needle Nematode Classification Hosts
Morphology and Anatomy Life Cycle
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           Longidorus africanus Merny, 1966

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Morphology and Anatomy:


Nematode is approximately 2.0 to 3.0 mm long.

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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Occurs in desert regions of southern California, i.e., the Palo Verde, Coachella, and Imperial valleys where the nematode poses special problems on fall vegetables, especially carrots, etc.

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Economic Importance:

 C-rated pest in California Nematode Pest Rating System.

Important pests of vegetables in southern California.


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At root tips.

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For an extensive host range list for this species, click


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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters
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Root crops; e.g., carrots, especially damaged.  

Devastating to seedling root systems.

Longidorus africanus damage to lettuce seedling.  Imperial Valley, California.

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Nematicides have been successful.  

Timing of planting of fall crops to avoid temperature conditions favorable to the nematode; plant when soil temperatures are below about 16 C.

Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

For plants reported to have some level of resistance to this species, click


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