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From Wikipedia, the free encyclopedia

Limnodynastes dorsalis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Suborder: Neobatrachia
Family: Myobatrachidae
Subfamily: Limnodynastinae
Genus: Limnodynastes
Species: L. dorsalis
Binomial name
Limnodynastes dorsalis
Gray, 1841

Limnodynastes dorsalis is a frog species from the family Myobatrachidae. The informal names for this species are Western Banjo Frog, Pobblebonk, Sand frog and Bullfrog. It is one of the endemic amphibians of Western Australia. [1][2]

A large frog in the Myobatrachidae family, it has sturdy limbs and a head that is triangular. Females are up to 87 mm long, the males are no bigger than 75 mm. The frog is grey or brownish-olive coloured, with irregular blotches and marbling of a very dark or black colour. The markings are large on the upper surface and smaller at the legs and face. A wide and dark stripe appears across the eye and extends to the fore limb. The underside is pale, white or yellowish, and smooth. The upper surface is also smooth, or may be slightly warty. A large oval bump, the tibial gland, is located on the upper calf of the hind leg. The toes are very slightly webbed, the second toe is perhaps a little longer than the first. The groin area is reddish to bright red, this distinguishes the western species from the otherwise similar Limnodynastes dumerilii (Eastern Banjo frog).[1][3]

The call[4] is a made by males when they are almost submerged, or in dense vegetation, this is a loud 'plonk' or 'bonk' sound. This sound is similar to a plucked banjo string, and it is from this that the common names are derived. The 'explosive' sound of the frogs calling in unison is well known in the region.[1][5] The spawn produced after mating is located on still to slowly moving water, where it forms a large mass. This floats on the surface around grasses or other anchorages.[3]

The diet of this frog is primarily insects and worms, but it will eat anything that it can capture.[3]

The species was first described in 1841. There are twelve species of Limnodynastes found in Australia, Limnodynastes dorsalis is the only one to be found in the Southwest of the country. The species is endemic to an area surrounded by arid regions, where it became isolated by climate changes in the continent. The species is distributed throughout Southwest Australia, a biodiverse region with a mediterranean climate, where it occupies habitat near permanent water.[1] It is endemic to Western Australia. The northern part of its range is east of Kalbarri, the species also occurs in the east to the Bight and inland to arid areas.[3][2]

The Limnodynastes dorsalis population has been vulnerable to changes in land use, but it appears to be secure from threatening factors. The introduction of dams in rural areas, or water features in suburban areas, has created habitat that is readily occupied by Pobblebonks. The species is common across the southwest of the state, and are numerous around creeks and rivers. They are usually found in dense vegetation at these sites, but sometimes occupy burrows during the dry season.[5]


  1. ^ a b c d Cogger, Harold G.. Reptiles and Amphibians of Australia.  
  2. ^ a b "Limnodynastes dorsalis". Australian Frog Database. Frogs Australia Network. 2005. Retrieved 2008-10-23.  
  3. ^ a b c d Browne-Cooper, Robert; Brian Bush, Brad Maryan, David Robinson (2007). Reptiles and Frogs in the Bush: Southwestern Australia. University of Western Australia Press. pp. 99. ISBN 9778 1 920694 74 6.  
  4. ^ Roberts, Dale (2005). "Limnodynastes dorsalis call". Australian Frog Database. Frogs Australia Network. Retrieved 2008-10-23.  
  5. ^ a b Hero, J-M, et al.. "Limnodynastes dorsalis: Western Bullfrog". AmphibiaWeb. Retrieved 2008-10-24.  

External links



Up to date as of January 23, 2010

From Wikispecies


Main Page
Cladus: Eukaryota
Supergroup: Unikonta
Cladus: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Amphibia
Subclassis: Lissamphibia
Ordo: Anura
Subordo: Neobatrachia
Familia: Limnodynastidae
Genus: Limnodynastes
Species: Limnodynastes dorsalis


Limnodynastes dorsalis (Gray, 1841)

Type locality: "Western Australia".

Holotype: BM 1947.2.19.7.


  • Cystignathus dorsalis Gray, 1841
  • Wagleria dorsalisGirard, 1853
  • Limnodynastes dorsalisGünther, 1859
  • Borborocoetes dorsalisCope, 1866
  • Limnodynastes dorsalis var. typica Fry, 1913
  • Limnodynastes dorsalis dorsalisLoveridge, 1935
  • Platyplectrum dorsalisWells & Wellington, 1985


  • Gray, 1841, Ann. Mag. Nat. Hist., Ser. 1, 7: 91.
  • Loveridge, 1935, Bull. Mus. Comp. Zool., 78: 21.
  • Frost, Darrel R. 2007. Amphibian Species of the World: an Online Reference. Version 5.1 (10 October, 2007). Electronic Database accessible at [1] American Museum of Natural History, New York, USA. Limnodynastes dorsalis . Accessed on 06 June 2008.
  • 2007 IUCN Red List of Threatened Species IUCN link: Limnodynastes dorsalis (Least Concern) Downloaded on 06 June 2008.

Vernacular names

English: Western Banjo Frog


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