Prosopocoilus inclinatus
In 3 days ~20% in a week ~50%
Prosopocoilus inclinatus, the Japanese stag beetle, is a beetle of the Family Lucanidae found throughout Japan (Hokkaido, Honshu, Shikoku, Kyushu, Sado Island, Tsushima, Yaku Island) and the Korean peninsula. Wikipedia →
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Japanese Stag Beetle sighting in Sendai on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 106th most-seen of the 128 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
July and August
In those months about 20% of wildlife watchers report a Japanese Stag Beetle in Sendai on a given day, against under 5% in September to June, the lowest months. Those are among Sendai's wettest months, with about 190 mm of rain a month against 80 mm in February.
5th of 5
Of the 5 cities where we can rate Japanese Stag Beetle sightings, Sendai ranks 5th at about 10%. The best odds are in Nagoya (Japan, about 20%), Tokyo (Japan, about 10%) and Osaka (Japan, about 10%).
Same family: Lucanidae
The closest relatives of the Japanese Stag Beetle that you can see in Sendai (family Lucanidae, Stag Beetles) are Little Stag Beetle (about 10%), Miyama Stag Beetle (about 10%) and Dorcus striatipennis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Japanese Stag Beetle is recorded against all the insects logged in Sendai (5 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.
