Longidorus macrosoma




Rev 11/19/2019

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           Longidorus macrosoma Hooper, 1961

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Morphology and Anatomy:

Very large nematodes, 6.8-12.0 mm long.

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

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Recorded from temperate regions of Europe.

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Economic Importance:


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Migratory ectoparasite of plant roots.

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  Mainly woody perennials such as cherry, rose, grape, and others.  High population densities were found under raspberry, blackcurrant and cherry, and low densities under grass and alternating spring barley and fallow (Cotton, 1976).

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

Two-year life cycle in the field.
High population densities of Longidorus macrosoma were recorded in the field under raspberry, blackcurrant and cherry, and low densities under grass and alternating spring barley and fallow.
Multiplication and development of the nematode was related to the availability of growing host roots, but the nematode was unable to complete its life-cycle within 1 yr.
In glasshouse pot tests, the nematode took at least 1 yr to complete its life-cycle on raspberry and was unable to do so during the period of the experiment on ryegrass and in fallow soil (Cotton, 1976).

Found to depths of 60 cm associated with raspberry roots.


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Causes root tip galling.  Virus vector; transmits English strain of Raspberry Ringspot virus


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DBCP (no longer available) was effective in greenhouse-grown roses where it was necessary to disinfect soil to 60 cm depth.

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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Brown, D.J.F. and Boag, B. 1975. Longidorus macrosoma. Commonwealth Institute of Helminthology Vol.5 no. 67.

Cotton, J. 1976. Observations of life-cycle, population development and vertical distribution of Longidorus macrosoma on raspberry and other crops. Annals of Applied Biology 83:407-412/


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