Hirschmanniella pomponiensis




Rev 09/12/2022

Classification Hosts
Morphology and Anatomy Life Cycle

Return to Hirschmanniella Menu

Economic Importance Damage
Distribution Management
Return to Pratylenchidae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology


           Hirschmanniella pomponiensis Abdel-Rahman and Maggenti, 1987


Back to Top

Morphology and Anatomy:

  Average morphometric dimensions - females
Body length (mm) 1.9
a (=body length (μm) / body width (μm) 66
b (= body length / esophagus length) 14
Stylet length (μm) 20
Males common
Abdel-Rahman and Maggenti (1987)
Female head region of Hirschmanniella pomponiensis.

Note that the lip region is not offset and has five annules.  Slit-like amphid aperture below lip region.

Hirschmanniella anterior region.  Note very long overlapping esophageal glands

One gonad of diovarial female showing oocytes and spermatheca.
Female tail with terminal spike

Female tail, lateral field areolated.

Male caudal alae and tail region.


Female: whole body

Metacorpus and excretory pore 
Vulva and uteri

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

Back to Top


Northern California

Type Locality Pomponio State Beach, San Mateo County, California

Type host: Bulrush, Scirpus robustus Pursh.

Type locality 2 Type locality 1 Creek1
Freshwater creek draining at beach, with bulrushes at edge
Freshwater creek draining at beach, with bulrushes at edge
Pollution warning
Contamination sign probably refers to cattle pasture to east
sampling site
Ferris sampling site west of bridge on US Hwy 1;
N37° 17.972’, W122° 24.282’
Photographs by Howard Ferris (August 18, 2010)    


Back to Top

Economic Importance:

D-rated pests in California.

Back to Top


Migratory endoparasite of roots.  Juveniles and adults enter behind the root tip and move in air channels; can also migrate into older roots. 


Back to Top


Bulrush (Scirpus robustus)

For an extensive host range list for this species, click


Back to Top

Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters

 Males and Females present.

Back to Top


Back to Top


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

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


Back to Top


Abdel-Rahman, F. and Maggenti, A.R. 1987. Hirschmanniella pomponiensis n. sp. (Nemata:Pratylenchidae), parasitic on bulrush, Scirpus robustus Pursh. Journal of Nematology 19:147-151.

Photomicrographs by John Chitambar, CDFA. and Howard Ferris

Back to Top

Copyright © 1999 by Howard Ferris.
Revised: September 12, 2022.