Polyploca ridens
In 3 days ~20% in a week ~50%
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 Snowdonia National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 246th most-seen of the 387 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
April
In that month about 30% of wildlife watchers report a Frosted Green in Snowdonia National Park on a given day, against under 5% in May to February, the lowest months. That is one of Snowdonia National Park's driest months, with about 95 mm of rain against 240 mm in December.
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.
Yes
Of the 3 parks where we can rate Frosted Green sightings, Snowdonia National Park has the highest daily chance: about 10%. Next come Sierra de Guadarrama National Park (Spain, about 10%) and Cévennes National Park (France, under 5%).
Same family: Drepanidae
The closest relatives of the Frosted Green that you can see in Snowdonia National Park (family Drepanidae, Hooktip and False Owlet Moths) are Peach Blossom Moth (about 20%), Buff Arches (about 10%) and Pebble Hook-Tip (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Frosted Green is recorded against all the insects logged in Snowdonia National Park (10 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.
