Cassida japana
In 3 days ~20% in a week ~30%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Cassida japana sighting in Nanjing on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 242nd most-seen of the 272 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
April to July
In those months about 10% of wildlife watchers report a Cassida japana in Nanjing on a given day, against under 5% in August to March, the lowest months. Those are among Nanjing's wettest months, with about 150 mm of rain a month against 40 mm in December.
Among the best
Of the 3 cities where we can rate Cassida japana sightings, Nanjing ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Hangzhou (China, about 10%).
Same family: Chrysomelidae
The closest relatives of the Cassida japana that you can see in Nanjing (family Chrysomelidae, Leaf Beetles) are Oides decempunctata (about 10%), Japanese Knotweed Leaf Beetle (about 10%) and Alligatorweed Flea Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cassida japana is recorded against all the insects logged in Nanjing (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.
