Pauronemoides siddiqii

 

Contents

 

Rev: 08/24/2026

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Pauronemoides Menu Economic Importance Ecosystem Functions and Services
Distribution Management
Return to Paurodontidae Menu Feeding  References
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Classification:

Chromadorea

Chromadoria

Rhabditida

Hexatylina

Tylenchoidea

 Paurodontidae

Paurodontinae

       Pauronemoides siddiqii Bonab, Bazeghi, Gharibazadeh, Atighi, Kanzaki, Giblin-Davis & Pedram, 2024

Type species of the genus

    Synonyms:
     

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Morphology and Anatomy:


 

Females: (free-living phase)

  • Body slender, (752-1281 um) slightly ventrally arcuate to straight, very gradually narrowing toward anterior and posterior body ends.
  • Cuticle with fine transverse annuli, six lines in lateral fields forming five bands, the two marginal and one central are wider.
  • Cephalic region with six equally-sized lips, low, anteriorly almost flat, continuous with body contour.
  • Stylet fine, with asymmetrical knobs; Guiding ring appearing complex, as triple rings.
  • DPGO just behind stylet knobs. Corpus anteriorly slender, posteriorly fusiform with no developed median bulb or valve, isthmus long, basal bulb spindle-shaped to saccate, with variable length (8-26 um) stem-like extension projecting into intestine,
  • Rectum and anus functional.
  • Monodelphic, prodelphic, located on left side of intestine, arranged from anterior as ovary, oviduct, spermatheca, crustaformeria, uterus and vagina/vulva
  • Ovary anteriorly outstretched, anterior part of ovary reflexed in some specimens,
  •  Spermatheca axial, elongate ellipsoid, with sperm. Crustaformeria muti-cellulate. Uterus tubular, short,with moderately thick walls.  PUS absent.
  • Vulva a wide transverse slit. 
  • Tail conical, tip rounded with a mucron
       

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

 

 

Males:  

  • Common, lbut ess frequent than females. General morphology similar to  females
  • Monorchic. Spicules tylenchoid, slender, moderately sclerotised.
  • Gubernaculum slightly curved.
  • Bursa elongate-ellipsoid with a sharp differentiation at end, 50-59 um long, enveloping tail tip completely (= peloderan).
  • Tail conical, ventrally slightly convex with sharp tip

Ref: Bonab et al., 2024

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Distribution:

Recovered from  a soil sample from Islami Island, Eastern Azarbayjan province, northwestern Iran, from the rhizosphere of Prunus amygdalus.

Also recovered from soil in Chaypareh county, Western Azarbayjan province from rhizosphere of Euphorbia sp. (spurge). and from decaying wood and bark samples of a dead pine tree in northern Tehran (northern Iran).

 

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Economic Importance:

 

 

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Feeding:

Free-living stage probably fungal feeding.  Wood samples from the areas had bark beetle galleries but no insects were recovered. No entomopathogenic forms of the nematode were found (Bonab et al., 2024)

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Biology and Ecology:

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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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Ecosystem Functions and Services:

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Management:

 
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References:

Bonab, M.A., Bazeghi, F., Gharibazadeh, F., Atighi, M.R., Kanzaki, N., Giblin-Davis, R.M., Pedram, M. 2024. Description of Pauronemoides siddiqii n. gen., n. sp. (Tylenchomorpha, Paurodontidae), a morphological and molecular phylogenetic study. Nematology 56:607-620.

 

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Revised by Howard Ferris.
Revised: August 24, 2026.