Acritoscincus duperreyi
Silhouette: David Orr · PhyloPic
In 3 days ~10% in a week ~20%
The eastern three-lined skink (Acritoscincus duperreyi), also known commonly as the bold-striped cool-skink, is a species of skink, a lizard in the family Scincidae. The species is endemic to Australia. A. duperreyi has been extensively studied in the context of understanding the evolution of learning, viviparity in lizards, and temperature- and genetic-sex determination. A. duperreyi is classified as a species of "Least Concern" by the IUCN.
The species has also been placed in the genus Bassiana, with two other species of skink: B. trilineata and B. palynota. Micro-genetic analyses have revealed that the genus Bassiana began to diversify during the Miocene, suggesting that these three lineages started to form between 16.2 and 9.7 million years ago. Individual species in the genus began to diversify as well through the Miocene and into the Early Pleistocene. Within A. duperreyi, population-level diversification between the population on Tasmania, Kangaroo Island, and mainland Australia likely took place during the Upper Pliocene through the Early Pleistocene. Genetic evidence suggests that there are seven distinct lineages of A. duperreyi: five on mainland Australia,... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wilsons Promontory National Park | 🇦🇺 Australia | |
| 2 | Kosciuszko National Park | 🇦🇺 Australia | |
| 3 | Great Otway National Park | 🇦🇺 Australia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Melbourne | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report an Eastern Three-lined Skink sighting in Melbourne on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 19th most-seen of the 23 reptiles we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an Eastern Three-lined Skink in Melbourne on a given day, so our monthly data shows no clear season.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Eastern Three-lined Skink sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Melbourne, in our data
Melbourne is the only city on Wallace's Line with enough records to rate Eastern Three-lined Skink sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Scincidae
The closest relatives of the Eastern Three-lined Skink that you can see in Melbourne (family Scincidae, Skinks) are Common Bluetongue (about 20%), Pale-flecked Garden Sunskink (about 20%) and Southern Weasel Skink (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eastern Three-lined Skink is recorded against all the reptiles logged in Melbourne (14 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
