Pratylenchus hippeastri




Rev 05/23/2022

Amaryllis Lesion Nematode Classification Hosts
Morphology and Anatomy Life Cycle
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           Pratylenchus hippeastri Inserra, Troccoli, Gozel, Bernard, Dunn & Duncan, 2007 


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Morphology and Anatomy:

  • Body slender, usually slightly bent ventrally after gentle heat
  •  Lip region flatten anteriorly with two annuli, and first annulus narrower than the second one. A third lip annulus appears on one side occasionally.
  • Lateral field with four lines, oblique striae may be present in middle band
  •  Stylet strong, knobs ellipsoidal or slightly concave ..
  •  Excretory pore at the level of or just anterior to the pharyngeal-intestinal valve
  •  Pharyngeal glands overlapping intestine ventrally.
  •  Monodelphic, prodelphic. Oocytes arranged in single row. Spermatheca rectangular not containing sperm.
  • Vulval lips usually slightly raised in some specimens .
  • Post-uterine branch with distinct cells occasionally visible in distal portion.
  • Phasmids located in the distal half of tail.
  • Tail conoid with bluntly pointed or subhemispherical, smooth terminus. Hyaline portion of tail distinct.
  • Male not found

Ref: Wang et al., 2016.

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

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Described from amaryllis (Hippeastrum spp.) in Florida, USA.. Also reported from China, South Africa, Costa Rica, and from a vineyard in Kern County, California (Handoo et al., 2020).

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Economic Importance:

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    Migratory endoparasite.    

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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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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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Handoo, Z.A., Skantar, A.M., Kantor, M.R., Hafez, S.L., Hult, M.N. 2020. Molecular and morphological characterization of the amaryllis lesion nematode, Pratylenchus hippeastri (Inserra et al., 2007), from California. J. Nematology 52:  | DOI: 10.21307/jofnem-2020-058

Inserra, R. Troccoli, A.  Gozel, U., Bernard, E., Dunn, R. & Duncan, L. 2007.  Pratylenchus hippeastri n. sp.(Nematoda: Pratylenchidae) from amaryllis in Florida with notes on P. scribneri and P. hexincisus. Nematology.9:25-42.

Wang, H., Zhuo, K., Liao, J. 2016. Morphological and Molecular Characterization of Pratylenchus hippeastri, A New Record of RootLesion Nematode Associated With Apple in China. Pakistan J. Zool. 48:665-671



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Copyright 1999 by Howard Ferris.
Revised: May 23, 2022.