Vulcanonema		Contents		Rev 10/02/2026
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Vulcanonema 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

Vulcanonema Travassos & Kloss, 1958

Type species of the genus: Vulcanonema obesa Travassos & Kloss, 1958

Synonyms:

Vulvanema Cordeira, 1981

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Morphology and Anatomy:

Female:

• Cervical cuticle without spines.
• Cephalic ex remity formed by circumoral annule and distinctly separate swollen cervical annule.
• Esophageal corpus divided; posterior portion markedly clavate.
• Vulva near midbody, vagina anteriorly directed
• Monodelphic.
• Tail attenuated

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Distribution:

Species described from passalid beetles in South America

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Feeding:

Food Sources and Feeding strategies for the genus Vulcanonema

 Intestinal parasites of passalid beetles (Coleoptera: Passalidae).

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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:

Adamson, M.L. and Van Waerebeke, D. 1992. Revision of the Thelastomatoidea, Oxyurida of invertebrate hosts III . Hystrignathidae. Systematic Parasitology 22:111-130

Travassos, L., and Kloss, G.R. 1958. Nematodeos de inverte brados. 14a. Nota. Atas do Sociedade de Rio de Janeiro, 2, 27-30.

Travassos, L., and Kloss, G.R. 1958. obre a fauna de Nema todeos dos Coleopteros-Passalidae da Estacao biologica de Boraceia. Arquivos de Zoologica, Sao Paulo, 11, 23-57.

Travassos, L., and Kloss, G.R. 1958.  Contribuicao ao conheci mento dos nematoideos de coleopteros Passalidae . Revista Brasilieira do Biologia, 18, 55-57.

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Revised by Howard Ferris: October 02, 2026.