Stenodema calcarata
In 3 days ~10% in a week ~20%
Stenodema calcarata, also known as the two-spined grass bug, is a species of bug from Miridae family, that can be found in Europe and across the Palearctic to Central Asia, the Russian Far East, Siberia, northern China, Korea and Japan. 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 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Seoul | 🇰🇷 South Korea | |
| 3 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 4 | Helsinki | 🇫🇮 Finland | |
| 5 | Birmingham | 🇬🇧 United Kingdom | |
| 6 | London | 🇬🇧 United Kingdom | |
| 7 | Berlin | 🇩🇪 Germany | |
| 8 | Vienna | 🇦🇹 Austria |
Rare
Under 5% of wildlife watchers report a Two-Spined Grass Bug sighting in Wadden Sea National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 536th 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 Two-Spined Grass Bug in Wadden Sea National Park on a given day, so our monthly data shows no clear season.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Two-Spined Grass Bug sightings with a recorded time, and about 9 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 Two-Spined Grass Bug sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Two-Spined Grass Bug is recorded against all the insects logged in Wadden Sea National Park (8 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.
