The southwestern cool-skink (Acritoscincus trilineatus) is a species of skink.
| Southwestern cool-skink | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Family: | Scincidae |
| Genus: | Acritoscincus |
| Species: | A. trilineatus
|
| Binomial name | |
| Acritoscincus trilineatus | |
Taxonomy
editThe species was described in 1838 by John Edward Gray, based on a specimen held at the British Museum of Natural History, the author assigning it to the genus Tiliqua.[3]
Common names for the species include western three-lined skink, New Holland skink and southwestern cool-skink,[3][4] a name that refers to the cooler climates of its southern distribution range.[5]
Description
editA species of Acritoscincus found in the Southwest Australia region and an isolated population in South Australia. Their body is moderately stocky in form, with smooth scales, functional and strong limbs that each have five digits. Their total length, from head to tail, is around 190 millimetres, the snout to vent length is 70 mm. Both the sexes have a red patch at their throat which varies in its intensity of colour, becoming more noticeable during the breeding season.[5]
The coloration of A. trilineatus resembles the species Pseudemoia entrecasteauxii, the southern grass-skink, which occurs in a similar distribution range.[6]
Distribution and habitat
editIt is found in damp and cool habitat, such as wetlands, and often basking in a sunny position in the early part of the day.[5] The habitat also includes areas that are seasonally wet, but always with at least some remaining native vegetation.[4] The foraging activity, during which they seek small insect prey, is all undertaken during the day; their activities switches from feeding to basking in response to the weather conditions.[5] The distribution range extends from Israelite Bay to Gingin in the southwest of Australia, and at the off-shore island of Rottnest. The occurrence in South Australia is at a much smaller range in an area near the tip of the Eyre Peninsula. It is regarded as common throughout it range, and frequently observed in surveys of reptilian fauna.[4]
The IUCN Red List published an assessment in 2017 of least concern.[4]
References
edit- ^ Maryan, B.; Ford, S.; Shea, G.; Gaikhorst, G. (2017). "Acritoscincus trilineatus". IUCN Red List of Threatened Species. 2017: e.T178407A101752743. doi:10.2305/IUCN.UK.2017-3.RLTS.T178407A101752743.en. Retrieved 18 November 2021.
- ^ Gray 1838.
- ^ a b AFD.
- ^ a b c d IUCN 2107.
- ^ a b c d Browne-Cooper 2007.
- ^ Cogger 2018.
- "Species Acritoscincus trilineatus (Gray, 1838) Western Three-lined Skink". Australian Faunal Directory. biodiversity.org.au. Retrieved 22 July 2019.
- Browne-Cooper, R.; Bush, B.; Maryan, B.; Robinson, D. (2007). Reptiles and frogs in the bush : southwestern Australia. University of Western Australia Press. p. 110. ISBN 9781920694746.
- Cogger, H. (2018). Reptiles and Amphibians of Australia. CSIRO Publishing. p. 412. ISBN 9781486309702.
- Gray, John Edward (1838). "Catalogue of the slender-tongued saurians, with descriptions of many new genera and species. (contd.)". Annals of Natural History. 2: 287–293. doi:10.1080/00222933809496676.
- Maryan, B., Ford, S., Shea, G. & Gaikhorst, G. 2017. Acritoscincus trilineatus. The IUCN Red List of Threatened Species 2017: e.T178407A101752743. Downloaded on 22 July 2019.