Litoria spartacus is a species of frog in the subfamily Pelodryadinae of the family Hylidae. It is endemic to Papua New Guinea and is only known from two localities within the Kikori Integrate Conservation and Development Project Area in the Southern Highlands Province. It has affinities to Litoria macki and Litoria spinifera but has a smaller size and more extensively webbed hands and less tuberculate body.

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