Afrina hyparrheniae




Rev 07/25/2022

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          Afrina hyparrheniae (Corbett, 1966) Brzeski, 1981

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Morphology and Anatomy:





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


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Reported from Malawi in inflorescences of Hyparrhenia collina and other Hyparrhenia spp.

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Economic Importance:

Seed gall nematodes are quarantine pests in many countries.


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Ectoparasitic on young leaves and endoparasites in developing seed galls.

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Seed galls with female nematodes occurred in 6 species of Hyparrhenia.

For an extensive host range list for this species, click

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Life Cycle:

Some galls with adults and viable eggs did not contain males, so the function of males is uncertain.

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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Inflorescences of Hyparrhenia become clumped together to form a "witches broom".

Early nsymptoms are crinking along at edges of young leaves, then internodes in inflorescence become shortened and number of flowers increases.

Developing seeds in inflorescences become small, brownish-green seed galls, much smaller than healthy seeds (Corbett, 1966).

  Healthy inflorescence of Hyparrhenia (left), infected (right)
Image from Corbett (1966)
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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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Brzeski, M. W. 1981. The genera of Anguinidae (Nematoda, Tylenchida). Rev. Nematol. 4:23-34

Corbett, D.C.M. 1966. Central African nematodes III. Anguina hyparrheniae n.sp. associated with 'wioches' broom oh Hyparrhenia spp. Nematologica 12:280-286.


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Copyright 1999 by Howard Ferris.
Revised: July 25, 2022.