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  1. 136 Photo by William Archer
  2. 136_0 Photo by William Archer

Western banjo or Pobblebonk Frog

Limnodynastes dorsalis

Appearance

  • Colour:Back varies from pale brown to dark chocolate with areas of deep green or olive, red colouration in the groin and hind limbs
  • Tadpoles: Large, black with deep tail fins.
  • Distinctive feature: Large protruding oval gland on the upper surface of the calf.
  • Size: Males 2.8 – 6.4cm. Females 5.4 – 7.3cm

Behaviour

  • Call:.A deep and explosive “bonk”
  • Diet: Mostly insects and worms.
  • Movement:.Burrowing species that submerges itself during dry conditions.
  • Breeding:.Spawn laid in winter and spring in a large foam nest on the surface of still or slowly moving water.

What to Observe

  • Calling
  • Courting/mating
  • The appearance of foamy egg masses

ClimateWatch Science Advisor

  • We expect frogs to start calling and laying eggs earlier in the year as a result of climate change warming the Earth.
  • They may also start appearing in new areas as warmer temperatures enable them to live in environments that were previously too cold for them.

When To Look

Winter and Spring (June through to November).

Where To Look

  • Southwest and adjacent arid zone in WA
  • Lower Murchison River south and eat to Wattle Camp.  Inland to Falena, Moorine Rock, Lake Cronin, Peak Charles and Coragina Rock.
  • Found in a variety of habitats including forests, swamps, grasslands, and the wheatbelt.
  • Look and listen in vegetation near permanent water in Winter.

Western Banjo Frog Occurrence Map ALA

References

Tyler, M. J. & Doughty P. 2009 Field Guide to Frogs of Western Australia Western Australian Museum

Bush, B, Maryan, B, Browne-Cooper, R and Robinson, D 2007 Reptiles and Frogs in the Bush: Southwestern Australia University of Western Australia

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  1. What Else?

    This frog can be distinguished from all other species of Limnodynastes by its distribution, being found only in south-western Australia. Limnodynastes dumerilli can be found in the eastern states.

  1. Did You Know?

    The species is endemic to an area surrounded by arid regions, where it became isolated by climate changes in the interior.

    The species was first described in 1841.

    Western pobblebonk frog call by Dale Roberts, University of Western Australia

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