Thyas juno
In 3 days ~10% in a week ~20%
Thyas juno is a species of moth of the family Erebidae first described by Johan Wilhelm Dalman in 1823. It is found in the Indian subregion, China, Japan, Korea, Thailand, Borneo, Java, Sulawesi and on the southern Moluccas.
The larvae feed on Castanea, Quercus, Juglans and Pterocarya species. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Thyas juno sighting in Tokyo on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 684th most-seen of the 1013 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Thyas juno in Tokyo on a given day, so our monthly data shows no clear season.
Among the best
Of the 3 cities where we can rate Thyas juno sightings, Tokyo ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Osaka (Japan, under 5%) and Hong Kong (China, under 5%).
Same family: Erebidae
The closest relatives of the Thyas juno that you can see in Tokyo (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Japanese Nine-Spotted Moth (about 10%), Ramie Moth (about 10%) and Brown-Striped Semilooper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Thyas juno is recorded against all the insects logged in Tokyo (10 verified sightings), 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.
