Nemanema		Contents		Rev: 08/28/2026
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Nemanema Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Oxystominidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Enoplea

  Enoplia
        Enoplida

            Ironina

                Ironoidea

                    Oxystominidae

Oxystomininae

Nemanema Cobb, 1920

Type species of the genus: Nemanema simplex Cobb, 1920

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Morphology and Anatomy:

General characteristics of the genus:

• Strongly attenuated anterior end
• No buccal cavity;
• Amphidial fovea oval;
• Six outer labial setae and four cephalic setae;
• Pharynx slender, expanded at base but not to a bulb; cardia large;
• Prominent oval cells scattered throughout the body cavity;
• Tail conical to rounded.
• (Morphologically similar to genus Oxystomina except for the rounded tail (Platt and Warwick, 1983; Sun et al., 2018).
• Marine
  

Male:

• Diorchic, testes opposed, outstretched
• Gubernaculum present
• Precloacal supplements

Feale:

• Monodelphic-opisthodelphic

Ref: Huang and Guo, 2022; Smol et al., 2014; Platt and Warwick, 1988

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Distribution:

Free-living marine nematodes. Reported from subtidal muddy sediment.

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Feeding:

Food Sources and Feeding strategies for the genus Nemanema

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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:

Cobb, N.A. 1920. One hundred new nemas (type species of 100 new genera). Contributions to a Science of Nematology, 9: 217-343

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

Platt, H.M., Warwick, R.M. 1988. Free living marine nematodes: Part II. British Chromadoridas. In: Brill E J, Backhuys Dr W, eds. Synopses of the British Fauna (New Series), 38. Published for the Linnean Society of London and the Estuarine and Brackish-water Sciences Association. Avon, Great Britain: Bath Press, pp.502

Smol, N., Muthumbi, A., Sharma, J. 2014. Order Enoplida, 7.3. In Schmidt-Rhaesa, A. (ed) Handbook of Zoology. De Gruyter, Berlin

Sun, Y., Huang, M., Huang, Y. 2018. Two new species of free-living nematodes from the East China Sea. Acta Oceanologica Sinica, 37(10): 148-151, doi: 10.1007/s13131-018-1317-y9.

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Revised by Howard Ferris: August 28, 2026.