Meganola strigula
In 3 days ~10% in a week ~20%
Meganola strigula, the small black arches, is a moth of the family Nolidae. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775. It is found in Europe, Russia and Asia Minor. The wingspan is 18–24 mm. Adults are on wing from June to July and can be attracted to light.
The larvae feed on Quercus (including Quercus robur), Fagus, Prunus and Tilia species. Its habitat includes mature deciduous woodland, where the larvae are believed to feed on oak (Quercus). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 2 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Small Black Arches sighting in Pyrénées National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 1026th most-seen of the 1277 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.
May–June and September
In those months about 10% of wildlife watchers report a Small Black Arches in Pyrénées National Park on a given day, against under 5% in July–August and October–April, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Small Black Arches sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 2 parks where we can rate Small Black Arches sightings, Pyrénées National Park ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Sierra de Guadarrama National Park (Spain, under 5%).
GBIF citizen-science records
It is estimated from how often the Small Black Arches is recorded against all the insects logged in Pyrénées 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.
