Spirama retorta
In 3 days ~10% in a week ~20%
Spirama retorta, the Indian owlet-moth, is a moth of the family Erebidae. The species was first described by Carl Alexander Clerck in 1764. It is found in China (Tibet, Qinghai, Jiangsu, Fukien, Yunnan), Korea, Japan (Honshu), India (Sikkim, West Bengal), Nepal, Bangladesh, Thailand, Cambodia, Myanmar, Vietnam, Taiwan, Sri Lanka, Malaysia, the Philippines (Luzon), Indonesia (Java, Sulawesi),Japan (Ryukyu Islands).
The wingspan of the male is about 64–76 mm and 66-88 in female. The pattern on the wings often looks like the face of a snake with slightly opened mouth. Forewings with arched costa towards apex, which is nearly rectangular. Male with a fold on inner area of hindwing, containing an erectile ridge of very long hair. Antennae fasciculate. Male has dark chestnut-brown colored head and collar. Thorax paler with dark bands. Abdomen crimson with triangular black dorsal patches. Wings fuscous brown. Forewing with the costal and outer area more or less suffused with purplish and sometimes with an olive tinge. An antemedial line curved outwards below costa, and then oblique to inner margin. There is a large "inverted-comma" mark beyond end of cell, with ochreous and... 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 Spirama retorta sighting in Tokyo on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 770th 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 Spirama retorta in Tokyo on a given day, so our monthly data shows no clear season.
Among the best
Of the 2 cities where we can rate Spirama retorta sightings, Tokyo ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Pune (India, under 5%).
GBIF citizen-science records
It is estimated from how often the Spirama retorta is recorded against all the insects logged in Tokyo (9 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.
