Bena bicolorana
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Scarce Silver-Lines sighting in London on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 895th most-seen of the 1504 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.
September
In that month about 10% of wildlife watchers report a Scarce Silver-Lines in London on a given day, against under 5% in October to August, 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.
5th of 6
Of the 6 cities where we can rate Scarce Silver-Lines sightings, London ranks 5th at under 5%. The best odds are in Liverpool (United Kingdom, about 10%), Essen (Germany, under 5%) and Munich (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Scarce Silver-Lines is recorded against all the insects logged in London (14 verified sightings), 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.
