Angiostoma onychodactyla sp. n. (Nematoda: Angiostomatidae) and Other Intestinal Helminths of the Japanese Clawed Salamander,Onychodactylus japonicus (Caudata: Hynobiidae), from Japan

摘要

Angiostoma onychodactyla sp. n. from the intestines of the Japanese clawed salamander, Onychodactylus japonicus, is described and illustrated. Angiostoma onychodactyla is most similar to Angiostoma pleth-odontis in that lateral alae are absent, and there is a bulb without valves. The major difference between these 2 species is in the number and position of the caudal papillae, In addition, this sample of O. japonicus harbored 3 species of trematodes, Cephalouterina leoi, Mesocoelium brevicaecum, and Pseudopolystoma dendriticum, 1 species of nematode, Parapharyngodon japonicus, and 1 acanthocephalan species (cystacanth stage).