Patania ruralis
In 3 days ~40% in a week ~70%
Patania ruralis, the mother of pearl moth, is a species of moth in the grass moth family Crambidae. It was described by Giovanni Antonio Scopoli in 1763. Its common name refers to its almost transparent wings which in oblique lighting show a pale blue pearlescent sheen. This is found in Europe, occurring almost across the continent and the nearshore islands, except for those in the Aegean and Western Mediterranean as well as Cyprus. The adults are on the wing from June to September depending on the location. The caterpillars eat mainly Urtica nettles; occasionally they are found on other eudicots.
The wingspan is 26–40 millimetres (1.0–1.6 in). The forewings are pale whitish-ochreous, yellowish-tinged; a grey subcostal suffusion and connected orbicular dot; lines rather dark grey, first straight, second serrate, curved, strongly broken inwards beneath middle; a dark grey discal mark, nearly followed by a grey blotch; a grey terminal band, edge parallel to second line. Hindwings with colour, discal mark, and posterior markings as in forewings. The caterpillar larva is whitish green, sides greener; dorsal line darker; head green.
The larvae feed mainly... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Białowieża National Park | 🇵🇱 Poland | |
| 2 | Biebrza National Park | 🇵🇱 Poland | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 5 | Pyrénées National Park | 🇫🇷 France | |
| 6 | Wadden Sea National Park | 🇩🇪 Germany | |
| 7 | Cévennes National Park | 🇫🇷 France | |
| 8 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | Kyiv | 🇺🇦 Ukraine | |
| 4 | London | 🇬🇧 United Kingdom | |
| 5 | Nizhny Novgorod | 🇷🇺 Russia | |
| 6 | Helsinki | 🇫🇮 Finland | |
| 7 | Manchester | 🇬🇧 United Kingdom | |
| 8 | Moscow | 🇷🇺 Russia | |
| 9 | Kharkiv | 🇺🇦 Ukraine | |
| 10 | Turin | 🇮🇹 Italy |
Possible
About 20% of wildlife watchers report a Mother Of Pearl sighting in Biebrza National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 79th most-seen of the 97 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
July
In that month about 40% of wildlife watchers report a Mother Of Pearl in Biebrza National Park on a given day, against under 5% in March–June and September–October, the lowest months. That is one of Biebrza National Park's wettest months, with about 95 mm of rain against 35 mm in March. December has too few records to rate.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Mother Of Pearl sightings with a recorded time, and about 7 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 8 parks where we can rate Mother Of Pearl sightings, Biebrza National Park ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Białowieża National Park (Poland, about 20%).
Same order: Lepidoptera
The closest relatives of the Mother Of Pearl that you can see in Biebrza National Park (order Lepidoptera, Butterflies and Moths) are Map (about 40%), European Peacock Butterfly (about 40%) and Spongy Moth (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Mother Of Pearl is recorded against all the insects logged in Biebrza National Park (6 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.
