Six new nematodes of the Heligmonellidae (Trichostrongylina) collected from endemic murines of Sulawesi, Indonesia.

Nematodes in Odilia and Paraheligmonelloides (Trichostrongylina: Heligmonellidae) are first recorded from Sulawesi, Indonesia, with 6 new species from the small intestine of endemic murines: Odilia sulawesiensis n. sp. and Odilia moatensis n. sp. from Rattus xanthurus; Odilia mamasaensis n. sp. and Odilia maxomyos n. sp. from Maxomys musschenbroekii; Paraheligmonelloides eropeplios n. sp. from Eropeplus canus; Paraheligmonelloides paruromyos n. sp. from Paruromys dominator. The 6 species are readily distinguished from congeners in the arrangement and number of the synlophe ridges, dilatation of cuticle, shape of the bursa copulatrix and the spicules, and length ratio of the spicules or the ovejector to body. The intestinal heligmonellid fauna of Sulawesi rats shows affinity to both Sundaland and Australian representatives, reflecting dispersal and speciation history of the nematodes and their hosts.