Sphaerotheristus		Contents		Rev: 08/02/2025
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Sphaerotheristus 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

       Sphaerotheristus Timm, 1968

Type species of genus: Sphaerotheristus macrostoms (Timm, 1963) Timm, 1968

    Synonyms:

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Morphology and Anatomy:

With general characteristics of family Xyalidae, and:

• Cuticle is faintly striated;
• Buccal cavity U shaped with a projection of the esophageal cuticle projecting into the stoma and appearing as a dorsal tooth
• Amphid circular and located anteriorly
• Esophagus broadly clavate with triangular cardia.
•  Body with somatic setae.
• Tail is conico-cylindrical with terminal setae..Tail length 1.0-1.1 abd.

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Distribution:

Sphareotheristus was initally described by Timm (1968) with four species from the Gulf of Thailand. New species have been described from the coast of Vietnam (Venekey et al., 2014).

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Feeding:

Food Sources and Feeding strategies for the genus Sphaerotheristus

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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:

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Copyright 1999 by Howard Ferris.
Revised: August 02, 2025.