Perizoma didymata
In 3 days ~30% in a week ~60%
Mesotype didymata, the twin-spot carpet, is a moth of the family Geometridae. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae. Its genus is sometimes included in Perizoma. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Saint Petersburg | 🇷🇺 Russia |
With luck
About 10% of wildlife watchers report a Twin-Spot Carpet sighting in Cairngorms National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 70th most-seen of the 300 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
August
In that month about 30% of wildlife watchers report a Twin-Spot Carpet in Cairngorms National Park on a given day, against under 5% in September to June, the lowest months.
Between 5 and 8 am
Across all the parks we cover, that three-hour window holds the most Twin-Spot Carpet sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Yes
Of the 2 parks where we can rate Twin-Spot Carpet sightings, Cairngorms National Park has the highest daily chance: about 10%. Next come Bavarian Forest National Park (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Twin-Spot Carpet is recorded against all the insects logged in Cairngorms National Park (24 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.
