Studies on the parasite fauna of Thailand. I Two new metastrongylid nematodes, Angiostrongylus siamensis sp. n. and Thaistrongylus harinasutai gen. et sp. n. (Metastrongyloidea; Angiostrongylidae) from wild rats.

Abstract

Two new metastrongylid nematodes from Thailand were described.Angiostrongylus siamensis sp.n. was found in the mesenteric arteries of Rattus sahanus.This species is related to A. costa ricen sis, but is differentiated by a more reduced bursa in the male and a longer tapered tail in the female.Thaistrongylus harinasutai gen.et sp.n. was found in the lungs of Rattus herdmorei.In the male the bursa very reduced; the dorsal rays subventral showing a pair of papillae; other rays short and stout; the spicules short and arcuate; and a gubernaculum present.The female ovoviviparous, and the tail short and rounded.