Caloosia longicaudata




Rev 03/10/2020

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




         Caloosia longicaudata (Loos, 1948) Siddiqi & Goodey, 1963

Caloosia longicaudata is the type species of the genus.

Back to Top

Morphology and Anatomy:




  • Body slightly ventrally curved when heat killed
  • Cuticular sheath absent
  • Cuticle with widely-separated striations
  • Lateral field anot demarcated
  • Labial refgion with 2 annules, separated from each other and from first body annule by constrictions
  • Body striations (annuli) smooth and rounded
  • Stylet long, slender, with knobs anteriorly sloping
  • Esophagus with broad isthmus amalgamated with pear-shaped terminal bulb
  • Vulva a transverse slit with overhanging anterior lip
  • Monovarial, prodelphic, vagina slightly sigmoid
  • Spermatheca oval, containing rounded sperm
  • Tail elongate, becoming filiform


  • No stylet, esophagus degenerate, poorly developed
  • Lateral field not visible
  • Spicules straight, gubernaculum not distinct
  • Bursa peloderan, ending before tail tip
  • Tail tapering gradually to a finely-rounded terminus

Ref: Van den Berg et al., 2011



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


Back to Top


Originally reported fro Sri Lanka by Loos (1948) and subsequently from Fiji and the Hawaiian Islands (Van den Berg et al., 2011)/


Back to Top

Economic Importance:



Back to Top


  Migratory ectoparasite of plant roots.

Back to Top


For an extensive host range list for this species, click


Back to Top

Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters

  Sexually reproducing, males common, sperm observed in spermatheca.

Back to Top




Back to Top


Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

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


Back to Top


Loos, C.A. 1948. Notes on free-living and plant-parasitic nematodes of Ceylon 3. Ceylon Jour. Science (B) 23:119-124.

Van den Berg, E., Tiedt, L.R., Subbotin, S.A. 2011. Morphological and molecular characterisation of Caloosia longicaudata (Loos, 1948) Siddiqi & Goodey, 1963 (Nematoda: Caloosiidae) from Maui, the Hawaiian Islands with notes on some species of the genus. Nematology 13:381-393.

Back to Top

Copyright © 1999 by Howard Ferris.
Revised: March 10, 2020.