Trefusia		Contents		Rev: 08/30/2026
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Trefusia Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Trefusiidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Enoplea

  Enoplia
        Enoplida

            Trefusiina

Trefusioidea

                   Trefusiidae

Trefusia de Man, 1893

Type species of the genus: Trefusia longicauda de Man, 1893

    Synonyms:

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Morphology and Anatomy:

• Cuticle smooth or very fine striations
• Inner labial sensilla papilliform; outer labial and cephalic setae jointed;
• Amphideal fovea cryptospiral, oval, or horseshoe-shaped
• Ventral cervical papillae present;
•  Buccal cavity minute, funnel-shaped.
• Tail conical, conico-cylindrical or filiform

Male

• Ventral longitudinal rows of cervical sensilla.
• Small papillose precloacal supplements, either in a single ventral row or two subventral rows
• Postcloacal papillae absent.
•  Spicules usually with handle-shaped proximal ends.

Females:

• Didelphic

Ref: Huang and Guo, 2022

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Distribution:

Free-living marine nematodes; sandy beaches.

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Feeding:

Food Sources and Feeding strategies for the genus Trefusia

Ingestion of microbes in sediment

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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:

Huang, Y. and Guo, Y. 2022. Free-living Marine Nematodes from the East China Sea, https://doi.org/10.1007/978-981-16-3836-7_10

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Revised by Howard Ferris: August 30, 2026.