Graptopsaltria nigrofuscata
In 3 days ~60% in a week ~90%
Graptopsaltria nigrofuscata, the large brown cicada, is a species of cicada in the genus Graptopsaltria of the family Cicadidae found across East Asia, including Japan, the Korean Peninsula, and China. They are called aburazemi (アブラゼミ) in Japanese. The males make a loud chirping that ends with a click caused by a flick of the wings. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Possible
About 30% of wildlife watchers report a Large Brown Cicada sighting in Tokyo on a given day, based on 1,573 verified sightings from GBIF citizen-science data. It is the 3rd most-seen of the 1013 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
August
In that month about 60% of wildlife watchers report a Large Brown Cicada in Tokyo on a given day, against under 5% in March–June and December–January, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Large Brown Cicada sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
5th of 8
Of the 8 cities where we can rate Large Brown Cicada sightings, Tokyo ranks 5th at about 30%. The best odds are in Nagoya (Japan, about 50%), Hiroshima (Japan, about 30%) and Sendai (Japan, about 30%).
Same family: Cicadidae
The closest relatives of the Large Brown Cicada that you can see in Tokyo (family Cicadidae, Typical Cicadas) are Robust Cicada (about 20%), Kaempfer Cicada (about 20%) and Black Giant Cicada (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Large Brown Cicada is recorded against all the insects logged in Tokyo (1,573 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.
