Cucullitylenchus amazonensis

 

Contents

 

Rev 04/04/2023

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Cucullitylenchus Menu Economic Importance Damage
Distribution Management
Return to Tylenchidae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology

 


Classification:

      Tylenchida
       Tylenchina
        Tylenchoidea
         Tylenchidae
          Tylenchinae

           Cucullitylenchus amazonensis Huang and Raski, 1986
      

   As of 2000,   Cucullitylenchus amazonensis is the type and only species.

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Morphology and Anatomy:

 

Cucullitylenchus amuzonensis  A = anterior portion of male, lateral view; B = cephalic region of female, sublateral view; C = cephalic region of female, dorso-ventral view; D = female gonad; E = posterior portion of male; F = whole nematode, female; G = whole nematode, male. (from Huang and Raski, 1986)

Refer to subfamily diagnosis (Tylenchinae). 

Female

  • Body slender, delicate, tapers gradually posterior to vulva, more sharply after anus, ending in filiform tail.
  • Viewed laterally, lip region truncate with small oral depression.
  •  Lip region markedly set-off. Oral opening centrally located, traces of oral papillae barely visible. Viewed laterally, lip region truncate with small oral depression.
  • Cephalic framework weak, obscure.
  • Body annuli delicate but distinct, less than 1 um. 
  • Stylet weak, obscure in most cases. Stylet cone appears to be shorter than shaft, basal knobs of stylet moderately developed.
  • DEGO immediately behind stylet basal knobs.
  • Metacorpus oval, long, weakly developed.
  • Esophageal glands symmetrically arranged, bulb-like, not overlapping intestine. Isthmus thin.
  • Lateral field commences at anterior end of esophageal region, ends beyond anus,  two clear lines in most places, except where one or two extra lines may appear in middle of field.
  • Vulva slightly elevated, without lateral membranes.
  • Gonad monodelphic, prodelphic.
  • Spermatheca not set-off, oval, oblong or oblong with constrictions in middle, appearing as two or sometimes three spermathecae.
  • Uterine cells arranged in four columns.
  • Post-uterine sac less than one vulval body width. Anus obscure.
  • Tai1 long, filiform, about 7-10 x anal body width.

Male :

  • Similar to female except sexual characteristics.
  • Cloaca1 opening cone-shaped, elevated.
  • Caudal alae very low, only slightly higher than cloaca1 cone.

    Ref Huang and Raski, 1986
   

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

 

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Distribution:

Collected and described from tropical rainforest soil with mixed vegetation at the Fruit Tree Experiment Station, INPA-Institut0 Nacional de Pesquisas de Amazonas, Amazonas State, Brazil.

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Economic Importance:

 

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Feeding:

 

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Hosts:

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

 

    

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Damage:

 

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Management:

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

Huang, C.S. and Easki, D.J. 1986. Some Tylenchidae . from Brazil with description of Cucullitylenchus amazonensis gen. n., sp. n. (Tylenchoidea : Nemata). Revue Nématol. 9: 209-219

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Copyright 1999 by Howard Ferris.
Revised: April 04, 2023.