Calomicrolaimus		Contents		Rev 08/11/2026
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Calomicrolaimus Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Microlaimidae Menu		Feeding		References
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 Classification:

Chromadorea

  Chromadoria

   Microlaimida

Microlaimina

             Microlaimoidea

   Microlaimidae

               Calomicrolaimus Lorenzen, 1976

    Type species of the genus: Calomicrolaimus rugatus Lorenzen, 1976

Note: Kovalyev and Tchesunov (2005) regarded Calomicrolaimus Lorenzen, 1976 as a junior synonym of Microlaimus De Man, 1880. However, Tchesunov (2013), retained Calomicrolaimus rugatus as a valid monotypic genus and transferred all other species to Microlaimus

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Morphology and Anatomy:

• Cervical region elongated with conspicuous thick spine-like setae in cervical region.
• Amphideal fovea at a distance from the anterior end; often with corpus gelatum protruding from the amphideal aperture in males; amphids with sexual dimorphism.
• Stoma narrow, weakly sclerotized.

Males:

• Diorchic
• Papilloid precloacal supplements and precloacal cuticular thickenings present
•  Amphideal fovea smaller than that of females; only male amphid with a protruded rod like corpus gelatum

Females:

• Didelphic, ovaries outstretched
• Amphideal fovea larger than in males.

Ref: Tchesunov, 2013; Lorenzen, 1976

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Distribution:

Free-living marine nematodes

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Feeding:

Food Sources and Feeding strategies for the genus Calomicrolaimus

  Probably predaceous on marine micro-organisms

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Biology and Ecology:

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Life Cycle:

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Ecosystem Functions and Services:

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Management:

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References:

Kovalyev, S.V. and Tchesunov, A.V. 2005. Taxonomic review of microlaimids with description of five species from the White Sea (Nematoda: Chromadoria). Zoosystematica Rossica 14: 1-16.

Lorenzen, S. 1976. Calomicrolaimus rugatus n. gen., n. sp. (Desmodoridae, Nematodes) from a sandy beach in Colombia. Mitteilungen aus dem Instituto Colombo-Aleman de Investigaciones Cientificas 8: 79-82.

Tchesunov. A.V. 2013. 7.13 Order Desmodorida de Coninck, 1965 In Schmidt-Rheas and de Gruyter, W. Handbook of Zoology.Gastrocticha, Cycloneuralia, Gnatifera. Volume 2: Nematoda

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Copyright © 1999 by Howard Ferris.
Revised: August 11, 2026.