A new species of Cosmocerca (Nematoda, Cosmocercidae) and other helminths from Barygenys atra (Anura, Microhylidae) from Papua New Guinea.

Cosmocerca oroensis sp. nov. (Ascaridida, Cosmocercidae) from the large intestine of Barygenys atra (Anura, Microhylidae) is described and illustrated. Cosmocerca oroensis represents the 26th species assigned to the genus and the 7th from the Australo-Papuan biogeographical region. Cosmocerca oroensis sp. nov. differs from the previously described Australo-Papuan species in number of plectanes: C. oroensis with 2 pairs; C. australis, 3-4 pairs; C. archeyi, C. tyleri and C. zugi, 4 pairs; C. limnodynastes and C. novaeguineae, 5 pairs. In addition to the new nematode species, Meteterakis crombiei (Nematoda, Heterakidae) was also found.