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Uperoleia tyleri.jpg
Tyler's toadlet, Uperoleia tyleri
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Myobatrachidae
Genus: Uperoleia
Gray, 1841

See text.


Hyperolia — unjustified emendation
Glauertia Loveridge, 1933
Hosmeria Wells and Wellington, 1985
Prohartia Wells and Wellington, 1985

Uperoleia is a genus of frogs in the family Myobatrachidae. They are native to northern and eastern Australia and southern lowlands of New Guinea.[1] These are small squat frogs, more commonly known as "toadlets". They have glandular skin, often with a pair of raised glands behind each eye, or on the flanks.

They have bumpy, rough skin giving them the appearance of a small toad, hence the name "toadlet", although they are often called "gungans" in Queensland. There are two distinct types of calls—Uperoleia species make either a "click" or a "squelch". Generally, the "clicking" Uperoleia have long thin inguinal glands that run along the dorsal surface, while the "squelching" Uperoleia have round inguinal glands restricted to the posterior half of the dorsal surface. It is unusual to find more than one species of "clickers" or "squelchers" in the same location, although finding one of each is quite frequent in northern Australia. The species in this genus show great similarities in body shape and colouration making them difficult to tell apart. Call analysis is often required to confirm identification.[citation needed] This genus is the largest of any in the family Myobatrachidae.[2][3]

Clicking Uperoleia include U. glandulosa, U. aspera, U. minima, U. trachyderma, U. lithomoda, U. littlejohni, U. altissima, U. mimula, and U. rugosa. The squelching Uperoleia include U. russelli, U. saxatilis, U. talpa, U. borealis, U. crassa, and U. inundata. The eastern species U. laevigata, U. fusca, U. tyleri, and U. martini are also squelchers, but are distantly related. The species U. mjobergi, U. micromeles, U. micra, and U. daviesae are distinct from these other groups.[2]


Following the Amphibian Species of the World, there are 28 species:[1]

Common name Binomial name
Montane toadlet Uperoleia altissima
Davies, Watson, McDonald, Trenerry & Werren, 1993
Jabiru toadlet Uperoleia arenicola Tyler, Davies & Martin, 1981
Derby toadlet Uperoleia aspera (Tyler, Davies & Martin, 1981
Northern toadlet Uperoleia borealis Tyler, Davies & Martin, 1981
Fat toadlet Uperoleia crassa Tyler, Davies & Martin, 1981
Darwin Sandsheet Frog Uperoleia daviesae Young, Tyler & Kent, 2005
Dusky toadlet Uperoleia fusca Davies, McDonald & Corben, 1986
Glandular toadlet Uperoleia glandulosa Davies, Mahony & Roberts, 1985
Flood plain toadlet Uperoleia inundata Tyler, Davies & Martin, 1981
Smooth toadlet Uperoleia laevigata Keferstein, 1867
Stonemason's toadlet Uperoleia lithomoda Tyler, Davies & Martin, 1981
Littlejohn's toadlet Uperoleia littlejohni Davies, McDonald & Corben, 1986
Mahony's toadlet Uperoleia mahonyi Clulow, Anstis, Keogh, and Catullo, 2016
Marbled toadlet, yellow-spotted toadlet Uperoleia marmorata Gray, 1841
Martin's toadlet Uperoleia martini Davies & Littlejohn, 1986
Tanami toadlet Uperoleia micromeles Tyler, Davies & Martin, 1981
Mimic toadlet Uperoleia mimula Davies, McDonald & Corben, 1986
Small toadlet Uperoleia minima Tyler, Davies & Martin, 1981
Mjoberg's toadlet Uperoleia mjobergi (Andersson, 1913)
Alexandria toadlet Uperoleia orientalis (Parker, 1940)
Wrinkled toadlet, red-groined toadlet Uperoleia rugosa (Andersson, 1916)
Russell's toadlet Uperoleia russelli (Loveridge, 1933)
Pilbara toadlet Uperoleia saxatilis Catullo et al., 2011[2]
Ratcheting toadlet Uperoleia stridera Catullo, Doughty, and Keogh, 2014
Mole toadlet Uperoleia talpa Tyler, Davies & Martin, 1981
Blacksoil toadlet Uperoleia trachyderma Tyler, Davies & Martin, 1981
Tyler’s toadlet Uperoleia tyleri Davies & Littlejohn, 1986)

Note that the AmphibiaWeb recognizes the small-headed toadlet (Uperoleia capitulata Davies, McDonald & Corben, 1986),[4] a species that the Amphibian Species of the World, following Catullo and Keogh (2014),[5] treats as a synonym of the wrinkled toadlet (Uperoleia rugosa).[1]


  1. ^ a b c d Frost, Darrel R. (2016). "Uperoleia Gray, 1841". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 6 February 2017. 
  2. ^ a b c Catullo, R.A.; Doughty, P.; Roberts, J.D.; Keogh, J.S. (2011). "Multi-locus phylogeny and taxonomic revision of Uperoleia toadlets (Anura: Myobatrachidae) from the western arid zone of Australia, with a description of a new species" (PDF). Zootaxa. 2902: 1–43. 
  3. ^ Frost, Darrel R. (2016). "Myobatrachidae Schlegel, 1850". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 6 February 2017. 
  4. ^ "Myobatrachidae". AmphibiaWeb. University of California, Berkeley. 2017. Retrieved 6 February 2017. 
  5. ^ Catullo, R.A.; Keogh, J.S. (2014). "Aridification drove repeated episodes of diversification between Australian biomes: Evidence from a multi-locus phylogeny of Australian toadlets (Uperoleia: Myobatrachidae)". Molecular Phylogenetics and Evolution. 79: 106–117. doi:10.1016/j.ympev.2014.06.012.