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A new species of Heligmosomoides [Nematoda, Heligmosomidae] parasitic in Peromyscus maniculatus [Rodentia, Cricetidae] from Pennsylvania, USA

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Durette-Desset M. C. , Kinsella J. M.

Acta Parasitologica

2007

tom 52

nr 4

Heligmosomoides vandegrifti sp. nov. (Nematoda, Heligmosomidae) is described from Peromyscus maniculatus (Rodentia, Cricetidae) from Pennsylvania, USA. It differs from its closest congener, H. douglasi, in the number of cuticular ridges (35 vs. 32 in male, 36 vs. 41 in female at mid-body), longer bursal rays 2 in relation to rays 3, and in having smaller spicules (635–740 μm long vs. 1 mm). It is proposed that both H. douglasi and H. vandegrifti sp. nov. are parasites of capture from species in North American arvicoline rodents.

Two new species of Nippostrongylinae [Nematoda, Heligmosomoidea, Heligmonellidae] from a sigmodontine rodent in Argentina

100%

Digiani M. C. , Durette-Desset M. C.

Acta Parasitologica

2003

tom 48

nr 1

Two new Nippostrongylinae, Malvinema yagoi sp. nov. and Stilestrongylus talaverensis sp. nov. are described from the intestine of the water rat Scapteromys aquaticus (Thomas) (Sigmodontinae) from the Province of Buenos Aires, Argentina. Malvinema yagoi sp. nov. is distinguished from the most closely related species M.frederici Digiani, Sutton et Durette-Desset, 2003, from the same host and locality, mainly by a caudal bursa with the right rays 3 and 6, and 4 and 5 of equivalent length, and the posterior end of the female ventrally folded. Stilestrongylus talaverensis sp. nov. is distinguished from the most closely related species S. manni Denké et Murúa, 1977, a parasite of Akodon spp. from Chile, mainly by the presence of a short common trunk of rays 3 to 6 in the left lobe of the caudal bursa, the right ray 4 shorter than ray 5, the higher spicule length/body length ratio and the rotation of the posterior end of the female.