Thecavermiculatus

 

Contents

 

Rev 09/05/2023

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

Classification:

      Tylenchida
       Tylenchina
        Tylenchoidea
         Heteroderidae
          Ataloderinae
          

Thecavermiculatus Robbins, 1978

    Synonyms:

      None.Thecavermiculatus was synonymized with Atalodera (De Souza and Huang, 1994a)

The genus nname is derived from the Latin; theca - a sack, and vermicularis - of worms.

Back to Top

Morphology and Anatomy:

.

Females: No cyst stage.  Body globose, with prominent neck and no terminal cone.  

Cuticle thick, annulated in fore part or on the major part of body, with lace-like pattern on posterior part; D-layer present.  Subcrystalline layer present (very thick in T. crassicrustatus).  

Vulva subterminal, close to anus; vulval lips not protruding; anal-vulval region flush with body contour.  

Eggs retained in female body, together with hatched second-stage juveniles. Hence the genus name - literally "sac of worms".

Males: Body twisted. 

Lateral field with four lines.  

Spicules slightly curved, distally notched; no cloacal tubus.

Tail very short.  

No phasmids

Second-stage juveniles: Lateral field with four lines.  

Esophageal glands not filling body cavity (except T. crassicrustatus).  

Tail pointed, of medium length, with long, hyaline, terminal part.  

Phasmids with lens-like structure.  

[Ref: Luc, Maggenti & Fortuner, (1988).]


Body size range for the species of this genus in the database - Click:
Back to Top

Distribution:

 

Back to Top

Economic Importance:

 

Back to Top

Feeding:

Nurse cell system: A syncytium.
     

Back to Top

Hosts:

 
For an extensive host range list for this genus, click
Back to Top

Life Cycle:

For Ecophysiological Parameters for this genus, click 
 
Back to Top

Damage:

 

Back to Top

Management:

 

Back to Top

References:

De Souza, R.M. and Huang, S.P. 1994a. Description of Atalodera gibbosa n. sp. and synonymization of Thecavermiculatus Robbins, 1978 to Atalodera Wouts & Sher, 1971 (Nemata: Heteroderidae). Fundamental and Applied Nematology, 17, 43�56.

De Souza, R.M. and Huang, S.P. 1994.b. Ultrastructure of the body cuticle of Atalodera gibbosa Souza & Huang, 1994 (Tylenchida :Heteroderinae) Fundamental and Applied Nematology 17:479-483.

Ghaderi, R. 2019. An outline on distribution and hosts of the cystoid nematodes of Ataloderinae Wouts, 1973 and Meloidoderinae Golden, 1971. Zootaxa 4664:: 339�350 https://www.mapress.com/j/zt/

Luc, Maggenti & Fortuner, Rev. Nematol. 11(2):159-176 (1988).

Robbins, R.T. 1978. A New Ataloderinae (Nematoda: Heteroderidae), Thecavermiculatus gracililancea n. gen., n. sp. J. Nematology 10:250-254.

Back to Top

Copyright © 1999 by Howard Ferris.
Revised: September 05, 2023.