Gastrophysa viridula
In 3 days ~30% in a week ~50%
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 Snowdonia National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 185th most-seen of the 387 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 20% of wildlife watchers report a Green Dock Beetle in Snowdonia National Park on a given day, against under 5% in September 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.
Yes
Of the 3 parks where we can rate Green Dock Beetle sightings, Snowdonia National Park has the highest daily chance: about 10%. Next come Bavarian Forest National Park (Germany, about 10%) and Wadden Sea National Park (Germany, under 5%).
Same family: Chrysomelidae
The closest relatives of the Green Dock Beetle that you can see in Snowdonia National Park (family Chrysomelidae, Leaf Beetles) are Bloody-Nosed Beetle (about 20%), Alder Leaf Beetle (about 10%) and Poplar Leaf Beetle (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 Snowdonia National Park (13 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.
