Meloidogyne pseudokonaensis

  

Contents

  

Rev 04/21/2026

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Meloidogyne Menu Economic Importance Damage
Distribution Management
Return to Meloidogynidae Menu Feeding  References
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Classification:

       Chromadorea
       Rhabditida
       Tylenchina
        Tylenchoidea
          Meloidogynidae
           Meloidogyninae

           Meloidogyne pseudokonaensis Wong, Myers, Eisenback & Sipes, 2026

Review general characteristics of the genus Meloidogyne.

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Morphology and Anatomy:

A Meloidogyne population from Brazil, designated as M. konaensis (Monteiro et al., 2016), was shown to differ from M. konaensis originally described by Eisenback et al. (1994) on the basis of morphology, biochemistry, genetics, and host range (Wong et al., 2026).. The diagnostic features differed sufficiently to justify recognizing the Brazilian population as a distinct species. The new species has been designated Meloidogyne pseudokonaensis (Wong et al., 2026).

Significant characteristics of Meloidogyne pseudokonaensis are:

  Female: 
   
   
   
   

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

Second-stage juvenile
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Distribution:

Meloidogyne pseudokonaensis was collected from four different localities in the Ceara State, Brazil. Field populations were collected from papaya (Carica papaya), cabbage (Brassica capitata), noni (Morinda citrifolia), and canapum (Physalis angulata). The species was subsequently reared and described on tomato (Solanum lycopersicum) (Wong et al., 2026).;

 

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Economic Importance:

The designation of M. pseudokonaensis from Brazil as different from M. konaensis  has reduced disruption and confusion in regulatory decisions and resistance-breeding programs (Wong et al., 2026).

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Feeding:

Sedentary endoparasite.

Feeding site establishment and development typical of genus.

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Hosts:

Significantly, M. pseudokonaensis does not reproduce on Coffee arabica or Capsicum annuum (California Early Wonder).

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

Chromosome number 40-44, considered to be triploid or hypotriploid and to reproduce by obligate mitotic parthenogenesis (Wong et al., 2026).

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Damage:

 

 

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Management:

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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References:

Eisenback, J.D., Bernard, E.C., Schmitt, D.P. 1994. Description of the Kona coffee root-kmot nematode, Meloidogyne konaense n.sp. J. Nematology 26:363-374.

Monteiro, J.M.S., Cares, J.E., Gomes, A.C.M.M., Correa, V.R., Mattos, V.S., Santos, M.E.A., Almeida, M.R.A., Santos, C.D.G., Castagnone-Sereno, P., Carneiro, R.M.D.G. 2016. First report of, and additional information on, Meloidogyne konaensis (Nematoda: Meloidogyninae) parasitising various crops in Brazil. Nematology 18: 831- 844. doi: 10.1163/15685411-00002997

Subbotin, S.A. Palomares-Rius, J.E., Castillo, P. 2021. Systematics of Root-knot Nematodes (Nematoda: Meloidogynidae). Nematology Monographs and Perspectives Vol 14: D.J. Hunt and R.N. Perry (eds) Brill, Leiden, The Netherlands 857p.

Wong, L. G-K., Myers, R., Eisenback, J.D., Sipes, B.S. 2026. Integration of genetic data into the taxonomy of Meloidogyne konaensis necessitates the designation of Meloidogyne paranaensis as its junior synonym, and reveals a previously misclassified taxa from Brazil, Meloidogyne pseudokonaensis n. sp. Front. Ecol. Evol. 14:1769496. doi: 10.3389/fevo.2026.176949

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Copyright © 1999 by Howard Ferris.
Revised: April 21, 2026.