Viscosia		Contents		Rev 05/31/2025
		Classification		Hosts
		Morphology and Anatomy		Life Cycle
Return to Viscosia Menu		Economic Importance		Damage
		Distribution		Management
Return to Oncholaimdae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Enoplea

     Enoplia

        Enoplida

              Oncholaimoidea

                    Oncholaimidae

Oncholaimellinae

Viscosia Ditlevsen, 1928(?)

Type species of the genus: Viscosia glabra (Bastian, 1865) de Man, 1890 (?)

Synonyms:

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Morphology and Anatomy:

A large number of species has been described for Viscosia, many with incomplete detail in the descriptions (Smol and Sharma, 1984)

• Cuticle smooth
• Head flattened
• Outer labial and cephalic sensillae are short setae
•  Stoma athick-walled cylinder, 2.0-2.2 times as long as it is wide with three teeth; of which the right subventral tooth is considerably larger than dorsal and left subventral.
• Amphid apertures are 40-50% the body diameter and situtated at level of posterior half of stoma.
• Esophagus muscular with cardia small, protruding into mid gut lumen.
• Renette cell elongate-cylindrical, 30-35 um long, situated ventrally 90-120 um from posterior end of esophagus with the excretory pore located posterior to nerve ring.
• Freshwater and marine nematodes.

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Distribution:

Free-living freshwater and marine nematodes.in bottom sediments.

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Economic Importance:

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Feeding:

Food Sources and Feeding strategies for the genus Viscosia

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Life Cycle:

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Damage:

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Management:

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References:

Coomans, A., Vincx, M., Decraemer, W. 1985. Nematodes from a fresh-water pool on a coral island in the Solomon Islands. Hydrobiologia 123:265-281.

Gagarin, V.G., Nguyen, T.T. 2008. Free-Living Nematodes from the Red River Delta, Vietnam.  Biologiya Vnutrennikh Vol 1:12-17.

Smol, N. and Sharma, J. 1984. Two new and three redescribed species of Viscosia (Nematoda, Oncholaimidae. Hydrobiologia 114:123-147.

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Copyright 1999 by Howard Ferris.
Revised: May 31, 2025.