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 Minneapolis [Saint Paul] on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 458th most-seen of the 672 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 Minneapolis [Saint Paul] 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.
18th of 21
Of the 21 cities where we can rate Knotweed Leaf Beetle sightings, Minneapolis [Saint Paul] ranks 18th at under 5%. The best odds are in Bishkek (Kyrgyzstan, about 30%), Astana (Kazakhstan, about 10%) and Kyiv (Ukraine, about 10%).
Same family: Chrysomelidae
The closest relatives of the Knotweed Leaf Beetle that you can see in Minneapolis [Saint Paul] (family Chrysomelidae, Leaf Beetles) are Swamp Milkweed Leaf Beetle (about 10%), Spotted Cucumber Beetle (about 10%) and Lily Leaf Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Knotweed Leaf Beetle is recorded against all the insects logged in Minneapolis [Saint Paul] (8 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.
