Gastrophysa polygoni
Silhouette: Birgit Lang · PhyloPic
In 3 days ~10% in a week ~20%
Gastrophysa polygoni is a species of leaf beetle in the subfamily Chrysomelinae. It was described by Carl Linnaeus in 1758. The species can be up to 5mm long and is green-blue in colour. The thorax is orange and the wing cases are a metallic green, and the beetle can be seen in spring and summer. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bishkek | 🇰🇬 Kyrgyzstan | |
| 2 | Astana | 🇰🇿 Kazakhstan | |
| 3 | Kyiv | 🇺🇦 Ukraine | |
| 4 | Kharkiv | 🇺🇦 Ukraine | |
| 5 | Warsaw | 🇵🇱 Poland | |
| 6 | Bucharest | 🇷🇴 Romania | |
| 7 | Nizhny Novgorod | 🇷🇺 Russia | |
| 8 | Novosibirsk | 🇷🇺 Russia | |
| 9 | Kazan | 🇷🇺 Russia | |
| 10 | Almaty | 🇰🇿 Kazakhstan |
Rare
Under 5% of wildlife watchers report a Knotweed Leaf Beetle sighting in Wadden Sea National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 699th most-seen of the 818 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Knotweed Leaf Beetle in Wadden Sea National Park on a given day, so our monthly data shows no clear season.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most 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.
Only Wadden Sea National Park, in our data
Wadden Sea National Park is the only park on Wallace's Line with enough records to rate Knotweed Leaf Beetle sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Knotweed Leaf Beetle is recorded against all the insects logged in Wadden Sea National Park (5 verified sightings from 2019 to 2026), 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.
