Amphimonhystrella

Amphimonhystrella	Contents	Rev: 07/26/2025
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Amphimonhystrella 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
Amphimonhystrella Timm, 1961

Type species: Amphimonhystrella megastoma Timm, 1961

Synonyms:

Morphology and Anatomy:

With general characteristics of family Xyalidae, and:

Very small body <0,5mm, slender
Cuticle striatedor smooth, without lateral differentiation.
Cephalic crown composed of ten (6+4) smooth setae
Scarce cervical and somatic setae along the body.
Amphid large, round or slightly longitudinally oval, double walled
Esophastome elongate conical to near cylindroid, with sclerotised rhabdions, surrounded by esophageal collar.
Esophagus slightly widening posteriorly but no terminal bulb..

Females:

Monodelphic, prodelphic with postvulvar sac

Ref: Timm, 1961; Tchesunov and Miljutina, 2005;

Males:

Diorchic or monorphic, testes reflexed.ior outstretched
Spicules small, slightly bent.
Gubernaculum with or without small dorso-caudal apophysis.
Tail consists withconical and distal cylindrical portions ending with terminal drop-shaped expansion.

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

Feeding:

Food Sources and Feeding strategies for the genus Amphimonhystrella

Life Cycle:

For Ecophysiological Parameters for this genus, click

Ecosystem Functions and Services:

References:

Tchesunov, A.V., and Miljutina, M. 2005. Three new minute nematode species of the superfamily Monhysteroidea from Arctic Abyss. Zootaxa 1051: 19-32

Timm, R.W. 1961. The marine nematodes of the Bay of Bengal. Proceedings of Pakistan Academy of Sciences,1:1-88

Venekey, V., Gheller, P.F., Maria , T.F., Brustolin, M.C., Kandratavicius , N., Vieira , D.C., Brito, S., Souza, G.S., Fonseca, G. 2014. The state of the art of Xyalidae (Nematoda, Monhysterida) with reference to the Brazilian records. Marine Biodiversity DOI 10.1007/s12526-014-0226-3