Rhynchonema		Contents		Rev: 08/04/2025
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Rhynchonema Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Xyalidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadorea

  Chromadoria

   Monhysterida

Monhysterina

Sphaerolaimoidea

                 Xyalidae

       Rhynchonema Cobb, 1920

Type species Rhynchonema cinctum Cobb, 1920

    Synonyms:
     

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Morphology and Anatomy:

With general characteristics of family Xyalidae, and:

• Head attennuated, sharply tapered
• Six lip papilla, difficult to see, rings of setae 6 and 4 of the same length but in two distinct circles. I
• Cuticle coarsely striated
• Elongated tubular buccal cavity, short anterior section, longer tube-like posterior section.
• Anterior third of the esophagus attenuated.
• Amphid posterior to the attenuated section, close to end of pharyngostome. .
• Tail conical, terminating in spinneret

The paper by Bezerra et al (2014) provides descriptions of all currently knowm species of the genus.

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Distribution:

The genus Rhynchonema is distributed world-wide in diverse coastal environments ranging from brackish water to exposed beaches in intertidal and low subtidal zones, from clay to coarse sand and in sediments under seagrass beds (Bezerra et al., 2014).

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Feeding:

Food Sources and Feeding strategies for the genus Rhynchonema

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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:

Bezerra, T.N. Smol, N. , Vincx, M. 2014. Two new species of Rhynchonema Cobb, 1920 from a Brazilian sandy beach. Mar Biodiv DOI 10.1007/s12526-014-0223-6

Cobb, N.A. 1920 One hundred new nemas (Type species of 100 new genera). Contrib Sci Nematol 9:217-243

Huang, Y., Guo, Y. 2022. Order Monhysterida Filipjev, 1929. In: Free-living Marine Nematodes from the East China Sea. Springer, Singapore. https://doi.org/10.1007/978-981-16-3836-7_{_}9

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Copyright © 1999 by Howard Ferris.
Revised: August 04, 2025.