Gastrophysa viridula
In 3 days ~20% in a week ~30%
Gastrophysa viridula, known as the green dock beetle (note: the similar Gastrophysa cyanea in North America is also called the green dock beetle), green dock leaf beetle or green sorrel beetle, is a species of beetle native to Europe.
The length of the green dock beetle varies between sexes, with the males being 4 mm and the females being 7 mm. During the mating season, females have enlarged abdomens. Both sexes are green with a metallic shimmer, which, depending on the light, can be gold green, blue, purple, violet, or red. The legs of this species also shimmer a metallic green, and are strongly built. The antennae are serrated and are medium in length.
Its range extends eastward into western Siberia and the Caucasus Mountains. They are found in heathlands, forests, meadows, and gardens with the presence of plant dock (Rumex), the beetles' food plant. The green dock beetle feeds mainly on dock and green sorrel, rarely feeding... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manchester | 🇬🇧 United Kingdom | |
| 2 | Liverpool | 🇬🇧 United Kingdom | |
| 3 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 4 | Amsterdam | 🇳🇱 Netherlands | |
| 5 | Hamburg | 🇩🇪 Germany | |
| 6 | Birmingham | 🇬🇧 United Kingdom | |
| 7 | London | 🇬🇧 United Kingdom | |
| 8 | Warsaw | 🇵🇱 Poland | |
| 9 | Minsk | 🇧🇾 Belarus | |
| 10 | Leeds | 🇬🇧 United Kingdom |
With luck
About 10% of wildlife watchers report a Green Dock Beetle sighting in Bavarian Forest National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 585th most-seen of the 1115 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.
May to July
In those months about 10% of wildlife watchers report a Green Dock Beetle in Bavarian Forest National Park on a given day, against under 5% in August to April, the lowest months.
Between 4 and 7 pm
Across all the parks we cover, that three-hour window holds the most Green Dock Beetle sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 3 parks where we can rate Green Dock Beetle sightings, Bavarian Forest National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Snowdonia National Park (United Kingdom, about 10%).
Same family: Chrysomelidae
The closest relatives of the Green Dock Beetle that you can see in Bavarian Forest National Park (family Chrysomelidae, Leaf Beetles) are Poplar Leaf Beetle (about 10%), Colorado Potato Beetle (about 10%) and Willow Clytra (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Green Dock Beetle is recorded against all the insects logged in Bavarian Forest National Park (9 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.
