Rokroknema novaebritanniae n. gen., n. sp. (Nematoda: Pharyngodonidae) from the large intestine of Platymantis nexipus (Anura: Ranidae) is described and illustrated. Rokroknema represents the second Australo-Papuan genus assigned to the family Pharyngodonidae known to infect frogs. It is similar to Parathelandros (the other genus), but it is readily distinguished because the posterior pair of caudal papillae is not in the form of a rosette. Platymantis nexipus also was found to harbor 1 species of Digenea, Opisthioglyphe cophixali, and 5 additional species of Nematoda, adults of Aplectana krausi, Cosmocerca novaeguineae, Falcaustra batrachiensis, Icosiella papuensis, and larvae in cysts of Abbreviata sp., plus unidentified cystacanths of 1 species of acanthocephalan.

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