Geocrinia lutea
Copyright © Hal Cogger
Distribution map
Distribution Map of Geocrinia lutea
Copyright © Hal Cogger
Status
IUCN Classification:
Near Threatened
(International Union for Conservation of Nature)
Bioregion occurrence:
(this is not a distribution map)
State occurrence:
Links
- Nornalup Frog
AmphibiaWeb page on Geocrinia lutea
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Geocrinia lutea
Family: Myobatrachidae
Common name: Saffron Frog
Description: This frog is grey, brown or black-brown on its back, with a dark broad band that starts between the eyes and runs down the spine. This broad band often has a pale edge. The belly is yellowish with a rusty red wash almost like blood has mixed with water. There are pink spots in the groin and on the backs of the thighs. The arms and legs have dark cross-bars. The skin on the back is smooth or slightly tubercular (lumpy), while the belly is smooth. The toes are not fringed.
Size: 25 mm
Habitat: This frog lives in wet karri and jarrah forests and is found in shallow depressions in dense vegetation next to streams.
Call: Rapidly repeated "tk…tk…tk…tk". Call available in 
Windows Media or 
Quicktime audio. Recording Copyright © Dale Roberts.
Breeding: Males call from their tunnels in the clay or mud next to streams.
Eggs: Are laid in clumps in the tunnels.
Tadpoles: Hatch from the eggs and complete their development in the jelly from the eggs.
Similar species: This frog can be distinguished from Geocrinia rosea by its belly colouration.
Conservation Information
Suspected threatening processes
- Inappropriate fire regimes
- Habitat modification (e.g. vegetation clearing, invasive weeds)
Population size: An estimate of the total number of adults present in the species entire range is 10001-50000 individuals, or size is unknown but suspected to be large. Some factors affecting population size and distribution are known, but 1 or more major factors are unknown.
Population trend in Australia over the past 50 years: Population size stable or suspected to be stable or increasing.
Knowledge of population trend in Australia: Not currently monitored.
Population concentration: Majority concentrates at more than 25 locations. (e.g. the number of sites in which individuals group together either seasonally, such as breeding sites, or they may occupy discrete habitat patches within the broader landscape, such as discrete water bodies or drainage units.)
Ongoing management activities in Australia: None directed primarily at the taxon.
Reproductive potential for recovery: The average number of eggs deposited per adult female per year is 1-50 eggs/female/year. Minimum age at which females are known or suspected to first reproduce is 2-3 years.
Range size in Australia: The size of the geographic area over which the taxon is distributed: 101-1000 km².
Distribution trend: Area occupied has declined by < 25%. (This is an estimate of change in the portion of the total range that is occupied or utilised; it may not equal the change in total range.)
Knowledge of distribution in Australia: Distribution is well known and occurrence can be accurately predicted throughout the range.
References
Barker, J., G.C. Grigg and M.J. Tyler. 1995. A Field Guide to Australian Frogs. Surrey Beatty & Sons: Chipping Norton.
Cogger, H.G. 2000. Reptiles and amphibians of Australia. Reed Books: Sydney.