Alsophila aceraria
In 3 days ~10% in a week ~20%
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 Sierra de Guadarrama National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 528th most-seen of the 597 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.
November and December
In those months about 10% of wildlife watchers report an Autumn Alsophila Moth in Sierra de Guadarrama National Park on a given day, against under 5% in January to October, the lowest months.
Only Sierra de Guadarrama National Park, in our data
Sierra de Guadarrama National Park is the only park on Wallace's Line with enough records to rate Autumn Alsophila Moth sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Autumn Alsophila Moth is recorded against all the insects logged in Sierra de Guadarrama National Park (5 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.
