Bena bicolorana
In 3 days ~20% in a week ~30%
Bena bicolorana, the scarce silver-lines, is a moth of the family Nolidae. The species was first described by Johann Kaspar Füssli in 1775. It is found in Europe Turkey, Armenia, Asia Minor and Syria. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Pyrénées National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Scarce Silver-Lines sighting in Sierra de Guadarrama National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 226th 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.
June–July and September
In those months about 10% of wildlife watchers report a Scarce Silver-Lines in Sierra de Guadarrama National Park on a given day, against under 5% in August and October–May, the lowest months.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Scarce Silver-Lines sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 4 parks where we can rate Scarce Silver-Lines sightings, Sierra de Guadarrama National Park has the highest daily chance: about 10%. Next come Cévennes National Park (France, about 10%) and Bavarian Forest National Park (Germany, about 10%).
GBIF citizen-science records
It is estimated from how often the Scarce Silver-Lines is recorded against all the insects logged in Sierra de Guadarrama National Park (15 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.
