Viannalidae

Family: Viannaiidae

Revised 02/27/24

Classification:

Chromadorea: Chromadoria
Rhabditida: Rhabditina
Infraorder Rhabditomorpha
Heligmosomoidea

Viannaiidae (Neveau-Lemaire, 1944) Durrete-Desset & Chabaud, 1981

Two Subfamilies:

Hydrochoerisnematinae - intestinal parasites of rodents; left lateral lobe of bursa atrophied.
Viannaiinae - intestinal parasites of rodents, marsupials and primates; left lateral lobe of bursa developed.

Morphology and Anatomy:

Buccal capsule reduced; cephalic vesicle present.
Synlophe with three lafr subventral ridges or with ridges on dorsal and ventral surface
Careen absent
Females didelphic or monodelphic
Female tail without spine

Ref: Beveridge et al., 2014

Distribution

Reported as parasites of South American rodents, marsupials and primates. All genera of the family occur in South America,

Economic Importance:

Hosts:

Rodents, and marsupials.

Feeding

Life Cycle:

Damage:

Management:

References:

Beveridge, I., Spratt, D.M. and Durette-Desset, M-C. 2014. Order Strongylida (Railliet and Henry, 1913). In Schmidt-Raesa, A. (ed). Handbook of Zoology: Gastroctricha, Cycloneurelia and Gnathifera. Vol 2. Nematoda. De Gruyter, Berlin

Durette-Desset, M-C., Hugot, J.P., Darlu, P. and Chabaud, A.G. 1999. A cladistic analysis of the Trichostrongyloidea. Int. Jour. Parasitol. 21:579-587.

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