Species Description: Donnellan SC, Mahony MJ 2004 Allozyme, chromosomal and morphological variability in the Litoria leseueuri species group (Anura: Hylidae), including a description of a new species. Australian J Zool 52:1-28.
A small terrestrial frog typically found in close association with streams or rivers, Litoria wilcoxii ranges in size from 35-48mm among males and 39-69mm among females. Coloration is typically pale brown or fawn on the dorsum, and may range from being free of markings to having scattered dark flecks or large dark brown patches. A black streak bordered by a thin gold or pale-yellow line may be present extending along the body posteriorly at the level of the forelimb. The posterior surface of the thigh is black with small round or irregularly shaped spots of white, cream, or green. Ventral surfaces are white except in the submandibular area which may show fine, dark mottling. Hind limbs in both males and females are short with webbed toes, while the fingers, in contrast, are unwebbed, long and slender.
Males in breeding season frequently show lemon-yellow coloration on the flanks, upper surface of the forelimbs, and the side of the face, in additon to black or dark brown nuptial pads on the posterior dorsal surface of the first finger (Donnellann and Mahony 2004).
Distribution and Habitat
Life History, Abundance, Activity, and Special Behaviors
Eggs of L. wilcoxii are laid in streams at the edges of slow water runs or partly under small rocks on the bedrock of the stream. In both locations, egg masses are adhered to a rock substrate or bottom sediments. Individual eggs have a dark, pigmented animal hemisphere, unpigmented vegital hemisphere and are approximately 1mm in diameter (Donnelann and Mahony 2004).
Trends and Threats
In a study by Retallick, McCallum, and Speare (2004), frogs considered to be L. wilcoxii or L. jungguy (ambiguity due to recent designation by Donnellan and Mahony 2004) were found to have a 28% prevalence of chytrid infection without showing signs of population decline or significant effect to the affected individuals. Although distinction between L. wilcoxii and L. jungguy was not made, Retallick et. al. suggest the possibility that the species is a reservoir host which may play a substantial role in the maintenance and spread of the chytrid infection (Retallick, McCallum and Speare 2004).
Donnellan, S. C., and Mahony, M. J. (2004). ''Allozyme, chromosomal and morphological variability in the Litoria lesueuri species group (Anura:Hylidae), including a description of a new species.'' Australian Journal of Zoology, 52, 1-28.
Retallick, R.W., McCallum, H., and Speare, R. (2004). ''Endemic infection of the amphibian chytrid fungus in a frog community post-decline.'' PLoS Biology, 2(11), e351.
Written by Ketti Augusztiny (ketti AT berkeley.edu), UC Berkeley URAP
First submitted 2004-10-26
Edited by Michelle S. Koo, Tate Tunstall (2012-11-12)
Species Account Citation: AmphibiaWeb 2012 Litoria wilcoxii <http://amphibiaweb.org/species/6254> University of California, Berkeley, CA, USA. Accessed Dec 13, 2018.
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Citation: AmphibiaWeb. 2018. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 13 Dec 2018.
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