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  • Title: Trichostrongylina (Nematoda) from Malagasy Muridae. I--Description of two new species of Heligmonellidae in Nesomys spp.
    Author: Durette-Desset MC, Lethonen JT, Haukisalmi V.
    Journal: Parasite; 2002 Mar; 9(1):29-35. PubMed ID: 11938692.
    Abstract:
    Two new species of Heligmonellidae, Heligmonina wrightae n.sp. (Nippostrongylinae) and Nesomystrongylus fissicauda n.gen., n. sp. (Brevistriatinae) are described from Madagascar in Nesomys rufus and N. audeberti (Muridae). In Nesomys audeberti, the species are coparasites. Heligmonina wrightae is differentiated from all the other species of the genus, except H. malacomysi Sakka & Durette-Desset, 1988, by the ratio of the length of the spicules on the length of the body (25-27.8% versus 9.5-7%). It differs from H. malacomysi by the pattern of the caudal bursa and by the angle of the axis of orientation of the cuticular ridges on the sagittal axis. Nesomystrongylus fissicauda is related to the genus Fissicauda Durette-Desset & Krishnasamy, 1976, by the absence of the carene, by the ridges discontinuous on all the sides of the body and by the deeply divided dorsal ray. It differs from this genus by a different structure of the ridges, by the pattern of the caudal bursa, (very tiny rays 2 and strongly developed rays 3, rays 8 arising from common trunk of rays 2 to 6) and by the presence of a caudal tip in the female.
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