Gastrina cristaria
In 3 days ~30% in a week ~50%
Gastrina is a monotypic genus of moth in the family Geometridae. Its only species, Gastrina cristaria, the wave-lined geometrid, is found in the south-eastern quarter of Australia. Both the genus and species were first described by Achille Guenée in 1857. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Otway National Park | 🇦🇺 Australia | |
| 2 | Blue Mountains National Park | 🇦🇺 Australia | |
| 3 | Grampians National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Waved-Lined Geometrid sighting in Blue Mountains National Park on a given day, based on 30 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 122nd most-seen of the 789 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
August and September
In those months about 20% of wildlife watchers report a Waved-Lined Geometrid in Blue Mountains National Park on a given day, against under 5% in February–April and July, the lowest months. Those are among Blue Mountains National Park's driest months, with about 50 mm of rain a month against 150 mm in March.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Waved-Lined Geometrid sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 3 parks where we can rate Waved-Lined Geometrid sightings, Blue Mountains National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Great Otway National Park (Australia, about 10%).
Same family: Geometridae
The closest relatives of the Waved-Lined Geometrid that you can see in Blue Mountains National Park (family Geometridae, Geometer Moths) are Apple Looper (about 20%), Black Geometrid (about 10%) and Plantain Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Waved-Lined Geometrid is recorded against all the insects logged in Blue Mountains National Park (30 verified sightings from 2019 to 2026), 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.
