Blattella nipponica
In 3 days ~30% in a week ~60%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Blattella nipponica sighting in Osaka on a given day, based on 47 verified sightings from GBIF citizen-science data. It is the 56th most-seen of the 352 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.
June and July
In those months about 20% of wildlife watchers report a Blattella nipponica in Osaka on a given day, against under 5% in January–February and November, the lowest months. Those are among Osaka's wettest months, with about 200 mm of rain a month against 55 mm in January.
3rd of 5
Of the 5 cities where we can rate Blattella nipponica sightings, Osaka ranks 3rd at about 10%. The best odds are in Gwangju (South Korea, about 40%) and Nagoya (Japan, about 20%).
Same order: Blattodea
The closest relatives of the Blattella nipponica that you can see in Osaka (order Blattodea, Cockroaches and Termites) are American Cockroach (about 10%) and Panesthia angustipennis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blattella nipponica is recorded against all the insects logged in Osaka (47 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.
