Actias aliena
In 3 days ~50% in a week ~80%
Actias aliena is a moth in the family Saturniidae. It is a large silk moth with a wingspan ranging from 100–110 mm. It is found in Japan. Its mitochondrial genome has been sequenced. Their mitochondrial genome is 15,243 bp (base pairs) long. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nikko National Park | 🇯🇵 Japan |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Ōmizuao sighting in Nikko National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 16th most-seen of the 86 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
June
In that month about 50% of wildlife watchers report a Ōmizuao in Nikko National Park on a given day, against under 5% in March–April, July and September–November, the lowest months.
Between midnight and 3 am
Across all the parks we cover, that three-hour window holds the most Ōmizuao 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.
Only Nikko National Park, in our data
Nikko National Park is the only park on Wallace's Line with enough records to rate Ōmizuao sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Ōmizuao is recorded against all the insects logged in Nikko National Park (8 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.
