Actias gnoma
In 3 days ~30% in a week ~50%
Actias gnoma, also known as the Japanese moon moth, is a moth in the family Saturniidae The species was first described by Arthur Gardiner Butler in 1877. It is found in Japan and the Russian Far East. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nikko National Park | 🇯🇵 Japan |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Japanese Moon Moth sighting in Nikko National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 86th most-seen of the 86 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.
June
In that month about 30% of wildlife watchers report a Japanese Moon Moth in Nikko National Park on a given day, against under 5% in July and September–April, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Japanese Moon Moth sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Nikko National Park, in our data
Nikko National Park is the only park on Wallace's Line with enough records to rate Japanese Moon Moth sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Japanese Moon Moth is recorded against all the insects logged in Nikko National Park (7 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.
