Longidorus africanus




Rev 10/15/2015

 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.
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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 pests in California.

Important pests of vegetables in southern California.


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At root tips.

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For an extensive list of host plant species and their susceptibility, copy the name

Longidorus africanus

select Nemabase and paste the name in the Genus and species box


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Life Cycle:


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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 a list of plant species or cultivars (if any) reported to be immune or to have some level of resistance to this nematode species, copy the name

Longidorus africanus

select Nemabase Resistance Search and paste the name in the Genus and species box


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Copyright 1999 by Howard Ferris.
Revised: October 15, 2015.