Pratylenchus gracilis

Pratylenchus gracilis	Contents	Rev 04/20/2026
	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Pratylenchus Menu	Economic Importance	Damage
	Distribution	Management
Return to Pratylenchidae Menu	Feeding	References
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Classification:

       Chromadorea
       Rhabditida
       Tylenchina
        Tylenchoidea
         Pratylenchidae
          Pratylenchinae

Pratylenchus gracilis Alvarez-Ortega, Michaud & Subbotin, 2026

Morphology and Anatomy:

General Characteristics:

Lip region offset with three annuli narrowing towards the anterior end;
Stylet short (15-18 um) with rounded knobs;
Pharyngeal overlap short;
Lateral field with four incisures,
Spermatheca oval to rounded containig some sperm cells i
Vulva with somewhat prominent lips;
Tail subcylindrical tail with a rounded and smooth terminus;
Spicules 19-19.5 um long
Bursa well-developed

Ref: Alvarez-Ortega et al., 2026

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

Distribution:

Desribed from the rhizosphere of unidentified plants in Van Damme State Park, Mendocino County, California, USA

Hosts:

Described associated with roots of unidentified plants.

For an extensive host range list for this species, click

Life Cycle:

Assumed to be sexually reproducing based on the presence of males and sperm cells in spermathecae.

Ecophysiological Parameters:

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

Management:

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

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

Alvarez-Ortega, S., Michaud, A. and Subbotin, S.A., 2026. Diversity of Plant-Parasitic Nematodes of the Genus Pratylenchus (Nematoda: Pratylenchidae) in California: Descriptions of Two New Species and Insights from Phylogenetic Analyses. Diversity, 18(1)45