[Onchocerca sweetae occurring in the buffalo in Thailand (author's transl)]

The intradermal Onchocerca from Bubalus bubalis of Thailand is the same as that which was described as O. sweetae from intradermal nodules in B. bubalis from Australia. This identification suggests there has been no speciation between the parasites of Australian and Asiatic Buffaloes. The taxon O. indica Sweet 1915 consists of two distinct species; one in perimuscular nodules of Bos indicus is most probably O. gibsoni (and thus, the species O. indica, based essentially on the description of this material, should fall in synonymy); the other in intradermal nodules of B. bubalis does not differ from O. sweetae. To confirm the distinction between O. cebei, a parasite in the same host from Hanoï, and O. sweetae, it must be demonstrated that the presence or absence of clearly precloacal papillae is a valid character for separating these species.