Grammodes justa
In 3 days ~10% in a week ~20%
Grammodes justa, the plain box-owlet, is a moth of the family Noctuidae first described by Francis Walker in 1858. It is found in the northern half of Australia and Papua New Guinea. The wingspan is about 40 mm. The moths prefer the warmer climate of northern Australia and are considered a pest in the Northern Territory. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lamington National Park | 🇦🇺 Australia | |
| 2 | Springbrook National Park | 🇦🇺 Australia | |
| 3 | Daintree National Park | 🇦🇺 Australia | |
| 4 | Blue Mountains National Park | 🇦🇺 Australia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brisbane | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report a Plain Box-Owlet sighting in Blue Mountains National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 681st most-seen of the 789 insects 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.
February and October–November
In those months about 10% of wildlife watchers report a Plain Box-Owlet in Blue Mountains National Park on a given day, against under 5% in March–September and December–January, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Plain Box-Owlet sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
4th of 4
Of the 4 parks where we can rate Plain Box-Owlet sightings, Blue Mountains National Park ranks 4th at under 5%. The best odds are in Lamington National Park (Australia, about 10%), Springbrook National Park (Australia, about 10%) and Daintree National Park (Australia, about 10%).
Same family: Erebidae
The closest relatives of the Plain Box-Owlet that you can see in Blue Mountains National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Light Ermine Moth (about 10%), Bird Dropping Lichen Moth (about 10%) and Tigrioides alterna (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Plain Box-Owlet is recorded against all the insects logged in Blue Mountains National Park (5 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.
