Sympetrum frequens
In 3 days ~30% in a week ~60%
Sympetrum frequens, the Autumn darter (アキアカネ, akiakane), is a species of dragonfly endemic to Japan. It lives near grasslands and can grow up to 40 mm in length. After emerging, these dragonflies migrate to high mountains where they feed until descending to breeding pools (often temporary or artificial, including rice fields) at lower levels.
Akatombo—beloved Japanese song about this dragonfly ふしぎがわかる しぜん図鑑 こんちゅう (in Japanese). Tokyo, Japan: Froebel-Kan CO., LTD. 1999. p. 36. ISBN 4-577-00033-4. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nikko National Park | 🇯🇵 Japan |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report an Autumn Darter sighting in Sendai on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 56th most-seen of the 128 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
November
In that month about 30% of wildlife watchers report an Autumn Darter in Sendai on a given day, against under 5% in December to June, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Autumn Darter sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 5
Of the 5 cities where we can rate Autumn Darter sightings, Sendai ranks 3rd at about 10%. The best odds are in Sapporo (Japan, about 20%) and Nagoya (Japan, about 10%).
GBIF citizen-science records
It is estimated from how often the Autumn Darter is recorded against all the insects logged in Sendai (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.
