Coynema		Contents		Rev 09/30/2026
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Coynema Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Hystrignathidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadoria

Coynema Morffe & Garcia 2011

Type species of the genus: Coynema poeyi (Coy, Garcia & Alvarez, 1993) Morffe & Garcia 2011

Synonyms:

Glaber poeyi Coy, Garcia & Alvareez, 1993

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Morphology and Anatomy:

Female:

• Body robust, fusiform.

• Cervical cuticle unarmed. Lateral alae present, from the esophageal region to before level of vulva.

• Head with 8 small, paired papillae.

• First cephalic annule slightly expanded, set-off from head by a deep single groove

• Esophagus with muscular sub-cylindrical procorpus, short isthmus.

• Intestine simple, its fore region very expanded, forming a sac-like structure which continues as a simple, rectilinear tube.

• Nerve ring encircling procorpus; excretory pore post-bulbar.

• Didelphic-amphidelphic.

• Eggs large, ovoid, smooth-shelled.

• Tail long, subulate and filiform.

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Distribution:

Described from passalid beetles in Cuba: Passalus interstitialis and P. pertyi.

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Feeding:

Food Sources and Feeding strategies for the genus Coynema

 Intestinal parasites hind gut, caecum of passalid beetles (Coleoptera).

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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:

Morffe Rodriguez, J., Garcia Rodriguez, N. 2011. Coynema gen. n., a new genus of nematode (Thelastomatoidea, Hystrignathidae) parasites of Passalidae (Coleoptera) from Cuba.  ZooKeys 75:9-19.

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Revised by Howard Ferris.
Revised: September 30, 2026.