Two new species of Pharyngodonidae [Nematoda, Oxyuroidea] in Gekko ulikovskii from Vietnam

Pharyngodon duci sp. nov. and Spauligodon vietnamensis sp. nov. (Nematoda, Pharyngodonidae) from the large intestine of a gecko, Gekko ulikovskii (Sauria, Gekkonidae), from Vietnam are described and illustrated. Pharyngodon duci is the 35th species assigned to the genus and is separated from its congeners based upon the lack of a spicule, egg morphology, mouth morphology and cloacal lip morphology. Spauligodon vietnamensis is the 44th species assigned to the genus and is separated from its congeners by the lack of a spicule, egg morphology, and tail filament morphology.