Neocucullanus

Neocucullanus	Contents	Rev 01/11/2026
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Neocucullanus Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Cucullanidae Menu	Feeding	References
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Classification:

Chromadorea
Rhabditia

Rhabditida

Spirurina

Seuratoidea

Cucullanidae

Neocucullanus Travassos, Artigas & Pereira 1928

Type species of the genus: Neocucullanus neocucullanus Travassos, Artigas & Pereira 1928

Morphology and Anatomy:

Based on description of type species:

Larger-sized nematodes.
Body whitish, elongate, slightly narrower in region between posterior end of pseudobuccal capsule and posterior end of esophagus
Lateral cervical alae absent.
Cephalic end rounded in lateral view; oral aperture dorsoventrally elongate, surrounded by raised narrow membraneous ala (collarette) supported by row of about 100 minute basal teeth
Four submedian cephalic double papillae and pair of lateral amphids present
Eesophagus muscular, expanded anteriorly inot a bulbous pseudobuccal capsule (esophastome; posterior of esophagus also expanded, slightly broader than esophastome in lateral view
Six large rounded esophageal lobes, 3 on each side, visible in mouth in apical view
Eesophagus opens into intestine through large valve.

Female:

V=53-56%
Didelphic, amphidelphic
Tail with terminal spike

Ref: Moravec et al., 2025

Males:

Well-developed ventral sucker
Spicules equal, broad, non-alate
Gubernaculum absent
Caudal papillae present, 13 pairs
Tail with terminal spike

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

Distribution:

Intestinal parasite of freshwater fish; reported from South America.

Feeding:

Food Sources and Feeding strategies for the genus Neocucullanus

Parasites the digestive tracts of fish

Life Cycle:

For Ecophysiological Parameters for this genus, click

Ecosystem Functions and Services:

Moravec, F., Salgado-Maldonado, G., Gonzalez-Solis, D. 2025. Some nematodes from fishes of the LacantÃƒÂºn River in the Lacandon rain forest of Chiapas State, southern Mexico, including Cucullanus potamarii sp. n. (Cucullanidae) from the endemic catfish Potamarius usumacintae (Ariidae). Folia Parasitologica 2025, 72: 020 doi: 10.14411/fp.2025.020

Neocucullanus

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: January 11, 2026.

Neocucullanus

Copyright 1999 by Howard Ferris. Revised: January 11, 2026.

Copyright 1999 by Howard Ferris.
Revised: January 11, 2026.