Alsophila aceraria
In 3 days ~10% in a week ~30%
Alsophila aceraria is a species of moth in the family Geometridae. It is found from south-western Europe and France to Germany, Austria, Italy, western Ukraine, the Balkan Peninsula, the southern Crimea, the Caucasus and Transcaucasus.
The wingspan is 24–33 mm. Adults are on wing from mid October to mid December in one generation per year. The larvae feed on Quercus robur, Quercus petraea, Acer campestre, Fagus, Carpinus and Prunus species. The larvae can be found from April to June. The species overwinters as an egg. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Autumn Alsophila Moth sighting in Vienna on a given day, based on 44 verified sightings from GBIF citizen-science data. It is the 409th most-seen of the 1406 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
December
In that month about 30% of wildlife watchers report an Autumn Alsophila Moth in Vienna on a given day, against under 5% in January to October, the lowest months.
Yes
Of the 2 cities where we can rate Autumn Alsophila Moth sightings, Vienna has the highest daily chance: under 5%. Next come Prague (Czechia, under 5%).
GBIF citizen-science records
It is estimated from how often the Autumn Alsophila Moth is recorded against all the insects logged in Vienna (44 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.
