StygoStygodesmodora

Stygodesmodora	Contents	Rev: 05/25/2026
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Stygodesmodora Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Desmodoridae Menu	Feeding	References
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Classification:

Chromadorea
Chromadoria
Desmodorida: Desmodorina
Deamodoroidea
Desmodoridae

Spiruriinae

Stygodesmodora Blome, 1982

Type species of the genus: Stygodesmodora epixantha Blome, 1982

Synonyms:

Morphology and Anatomy:

Cuticle with coarse annulations; numerous long somatic setae may be present
Head region annulated
No lateral differentiation
Somatic setae in 8 or 6 longitudinal rows
Amphid unispiral or spiral located on amphideal plate;
Buccal cavity medium cuticularized, with a large dorsal tooth and smaller subventral teeth.
Pharynx with rounded or pyriform posterior bulb, without cuticularized lumen.
Tail conical, 3 caudal glands and spinneret

Ref: Leduc and Verschelde, 2015

Females:

Didelphic, amphidelphic, ovaries outstretched

Males:

Monorchic, testis outstretched
Pre-cloacal supplements present or absent
Spicules short, arcuate, and with well-developed capitulum;
Gubernaculum present

Body size range for the species of this genus in the database - Click:

Relatively uncomon genus. Species have been descrinbed from shallow bottom sediments of the North Sea and Indian Ocean. However, S. confusa is described from deeper ocean on the continental margin of New Zealand at 350 and 686 m depth. (Leduc and Verschelde, 2015).

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Feeding:

Food Sources and Feeding strategies for the genus Stygodesmodora

Probably epistrate feeders with scraping tooth in stoma

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Biology and Ecology:

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Life Cycle:

For Ecophysiological Parameters for this genus, click

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Ecosystem Functions and Services:

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Management:

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References:

Blome D. 1982. Systematik der Nematoda eines Sandstrandes der Nordseeinsel Sylt. Mikrofauna des Meeresbodens 86: 1-194.

Leduc, D and Verchelde, D. 2015. New Spirinia and Stygodesmodora species (Nematoda, Spiriniinae) from the Southwest Pacific, and a revision of the related genera Spirinia, Chromaspirina and Perspiria. European J. Taxonomy 118:1-25.

Stygodesmodora

Contents

Classification:

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Morphology and Anatomy:

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Distribution:

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Feeding:

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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: May 25, 2026.

Stygodesmodora

Copyright © 1999 by Howard Ferris. Revised: May 25, 2026.

Copyright © 1999 by Howard Ferris.
Revised: May 25, 2026.