Theretra japonica
In 3 days ~20% in a week ~30%
Theretra japonica is a moth of the family Sphingidae first described by Jean Baptiste Boisduval in 1869. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Theretra japonica sighting in Beijing on a given day, based on 21 verified sightings from GBIF citizen-science data. It is the 134th most-seen of the 401 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
May and August–September
In those months about 10% of wildlife watchers report a Theretra japonica in Beijing on a given day, against under 5% in June–July and October–April, the lowest months. Those are among Beijing's wettest months, with about 70 mm of rain a month against almost none in January.
Among the best
Of the 9 cities where we can rate Theretra japonica sightings, Beijing ranks 9th at about 10%, level with the leaders once rounded. The best odds are in Nagoya (Japan, about 10%), Seoul (South Korea, about 10%) and Wuhan (China, about 10%).
Same family: Sphingidae
The closest relatives of the Theretra japonica that you can see in Beijing (family Sphingidae, Sphinx Moths) are Eurasian Hummingbird Hawkmoth (about 10%), Plain Grey Hawkmoth (about 10%) and Convolvulus Hawkmoth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Theretra japonica is recorded against all the insects logged in Beijing (21 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.
