Neomisticius

 

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Rev 12/16/2024

  Classification Hosts
Morphology and Anatomy Life Cycle
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Distribution Management
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 Classification:

Chromadorea
       Rhabditida
       Tylenchina
        Tylenchoidea
         Anguinidae

          Neomisticius Siddiqi, 1986

Type species of the genus: Neomisticius. rhizomorphoides (Ruhm, 1955) Siddiqi, 1986
   

 Synonyms:
      None.

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Morphology and Anatomy:

The genus Neomisticius is sometimes classified in the Anguinidae and sometimes in the Sphaerulariidae. However, recent molecular data indicates that the genus should be in the Anguinidae (Subbotin and Chzihov, 2019).

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Female:  

  • Monodelphic-prodelphic, Vulva at > 90%
  • Long post-vulval uterine sac more than 1.5 VBD (Vulval body diam) long, occupying more than half of the vulva to anus distance
  • Female tail  hort and broad with knob-like terminal process

Ref: Siddiqi, 1986; Kanzaki et al., 2022

Males:  

  • Spicule tapering to distal end
  •  Simple gubernaculum
  •  Large peloderan bursa enveloping whole tail

 
Body size range for the species of this genus in the database - Click:
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Distribution:

Isolated from the bark of trees; insect associates.

Note that the number of species of insect-associated nematode has been estimated to be between 4000 and 500,000 (Giblin-Davis et al., 2013; Kanzaki et al., 2022).

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Economic Importance:

 

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Feeding:

Neomisticius spp. are probably fungal feeding with phoretic relationships with beetles. Neomisticius platypi has been cultured on fungus (Kanzaki et al., 2022).

The type species of the genus, N. rhizomorphoides, was originally described as a phoretic associate of Xyleborus dryographus in Germany (R�hm, 1955). Since then, it has been re-isolated from galleries of X. dispar and Xyleborinus saxeseni in the branches of cherry trees in California, USA (Subbotin & Chizhov, 2019)

 

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Hosts:
For an extensive host range list for this genus, click
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Life Cycle:

For Ecophysiological Parameters for this genus, click 
 
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Damage:

 

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Management:

 

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References:

Andrassy, I. 2007. Free-living Nematodes of Hungary, II (Nematoda errantia). Pedozoologica Hungarica 3. Hungarian Natural History Museum, Budapest, Hungary. 496p.

Giblin-Davis, R.M., Kanzaki, N. & Davies, K.A. 2013. Nematodes that ride insects: unforeseen consequences of arriving species. Florida Entomologist 96: 770-780. DOI: 10.1653/ 024.096.0310-

Kanzaki, N., Masuya, H., Hamaguchi, K. 2022. Neomisticius platypi  n. sp. and N. variabilis n. sp.(Tylenchomorpha: Anguinidae) from dead oak trees in Japan. Nematology 24:361-381.

Ruhm, W. 1955. Uber einige an holzbr�tende Ipiden gebundene Nematodenarten. Zoologischer Anzeiger 155: 70-83.

Siddiqi, M.R. 1986. Tylenchida parasites of plants and insects, 1st edition. Farnham Royal, UK, Commonwealth Agricul-tural Bureaux.

Subbotin, S.A. and Chizhov, V.N. 2019. Report of Neomisticius rhizomorphoides (Ruhm, 1955) Siddiqi, 1986 (Tylenchida: Anguinidae) from a cherry tree in California, USA. Russian Journal of Nematology 27:29-36..

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Copyright 1999 by Howard Ferris.
Revised: December 16, 2024.