Gallerucida bifasciata
In 3 days ~30% in a week ~50%
| # | 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 a Japanese Knotweed Leaf Beetle sighting in Sendai on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 90th 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 50%, if each day is a fresh chance.
May
In that month about 30% of wildlife watchers report a Japanese Knotweed Leaf Beetle in Sendai on a given day, against under 5% in June–September and November–March, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Japanese Knotweed Leaf Beetle sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 5 cities where we can rate Japanese Knotweed Leaf Beetle sightings, Sendai has the highest daily chance: about 10%. Next come Nanjing (China, about 10%) and Hangzhou (China, about 10%).
Same family: Chrysomelidae
The closest relatives of the Japanese Knotweed Leaf Beetle that you can see in Sendai (family Chrysomelidae, Leaf Beetles) are Dactylispa fulvipes (about 10%), Willow Leaf Beetle (about 10%) and Aulacophora nigripennis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Japanese Knotweed Leaf Beetle is recorded against all the insects logged in Sendai (7 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.
