Prasinocyma semicrocea
In 3 days ~30% in a week ~60%
Prasinocyma semicrocea, the common gum emerald, is a moth of the family Geometridae. The species was first described by Francis Walker in 1861. It is found in Australia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Otway National Park | 🇦🇺 Australia | |
| 2 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Common Gum Emerald sighting in Great Otway National Park on a given day, based on 34 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 52nd most-seen of the 418 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
May, August and November
In those months about 20% of wildlife watchers report a Common Gum Emerald in Great Otway National Park on a given day, against under 5% in June and December, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Common Gum Emerald 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.
Yes
Of the 2 parks where we can rate Common Gum Emerald sightings, Great Otway National Park has the highest daily chance: about 10%. Next come Blue Mountains National Park (Australia, about 10%).
Same family: Geometridae
The closest relatives of the Common Gum Emerald that you can see in Great Otway National Park (family Geometridae, Geometer Moths) are Australian Pug Moth (about 20%), Varied Grey Moth (about 20%) and Plantain Moth (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Gum Emerald is recorded against all the insects logged in Great Otway National Park (34 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.
