Polyploca ridens
In 3 days ~20% in a week ~30%
Polyploca ridens, the frosted green, is a moth of the family Drepanidae. It is found in southern and central Europe, England, Denmark, southern Sweden and in the east up to Russia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 3 | Cévennes National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Frosted Green sighting in Sierra de Guadarrama National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 244th most-seen of the 597 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.
March and April
In those months about 10% of wildlife watchers report a Frosted Green in Sierra de Guadarrama National Park on a given day, against under 5% in May to February, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Frosted Green sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 3 parks where we can rate Frosted Green sightings, Sierra de Guadarrama 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%).
GBIF citizen-science records
It is estimated from how often the Frosted Green is recorded against all the insects logged in Sierra de Guadarrama National Park (18 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.
