Folia Parasitologica, vol. 61 (2014), issue 5

Folia Parasitologica 61[5] 473-478 (2014) | 10.14411/fp.2014.043

A new genus and species of Heligmonellidae (Nematoda: Trichostrongylina) parasitic in Delomys dorsalis (Rodentia: Sigmodontinae) from Misiones, Argentina

María Celina Digiani1,2, John M. Kinsella3
1 CONICET- Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina;
2 División Zoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Argentina;
3 HelmWest Laboratory, Missoula, Montana, USA

Alippistrongylus bicaudatus gen. et sp. n. (Nematoda: Heligmonellidae) is described from the striped Atlantic forest rat, Delomys dorsalis (Hensel) (Rodentia: Sigmodontinae), from the province of Misiones in Argentina. The new genus and species is characterised by a synlophe of 21 unequal ridges in both sexes without a gradient in size, with two ridges weakly sclerotised and oriented perpendicularly in the dorsal left quadrant; males with a highly dissymmetrical bursa with a hypertrophied right lobe, and females with a dorsal conical appendage just posterior to the vulva, conferring a two-tailed appearance to the female worms.

Keywords: taxonomy, Nippostrongylinae, synlophe, right lobe hypertrophy, right lobe rotation, caudal appendage, South America

Received: January 13, 2014; Accepted: March 26, 2014; Prepublished online: May 19, 2014; Published: October 30, 2014


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