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Uperoleia trachyderma

Blacksoil Toadlet

Conservation Status

EPBC:

Unlisted

IUCN:

Least Concern

Calling Period

Possible
Yes
Peak
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Description

A small species of frog reaching up to nearly 3 cm in body length. It has a light grey, brown or orange-brown back, with darker patches and darker orange spots. There is a V-shaped marking between the eyes, and nearly symmetrical markings on the middle and lower back. The belly is white with grey specks, and the male has a grey throat. The pupil is nearly round, and the iris is silver or gold. The groin and the backs of the thighs are bright red. The arms and legs often have horizontal bars. Fingers and toes are unwebbed, both without discs. The parotoid glands are large and the same colour as the back.

Breeding Biology

Eggs are unknown. Tadpole size and development time are unknown, but several have been observed to be dull gold-brown in colour. Breeds during summer and possibly autumn in the wet season.

Similar Species

Looks very similar to Uperoleia inundata, Uperoleia lithmoda and Uperoleia stridera in its distribution, but has a slightly different call to all of these species, and Uperoleia stridera also lacks orange spots on its back as present in Uperoleia trachyderma.

Images

Photo: Marion Anstis

Photo: Renee Catullo

Photo: Renee Catullo

Calls

By: Renee Catullo

Distribution

Found inland in northwest QLD and the Barkly Tableland region in the NT.

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