Pharyngodon wandillahensis n. sp. from the endangered pygmy bluetongue lizard Tiliqua adelaidensis Peters, 1863, from the midnorth of South Australia, Australia is described and illustrated. Pharyngodon wandillahensis n. sp. represents the thirty-seventh species assigned to Pharyngodon. It is distinguished from the 5 other Australian species by its smaller size, the form of the lateral alae, and in having 6 small but fleshy lips. Prevalence, distribution and intensity in the host T. adelaidensis are also reported.