Ancylis laetana
In 3 days ~20% in a week ~40%
Ancylis laetana is a moth of the family Tortricidae. It is found in most of Europe, except the Iberian Peninsula, the Balkan Peninsula, Iceland, Ireland and Ukraine. The wingspan is 14–18 mm. Adults are on wing from May to June in one generation per year.
The larvae feed on Populus tremula and occasionally Populus nigra. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report an Aspen Roller sighting in Bavarian Forest National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 471st most-seen of the 1115 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May–June and September
In those months about 10% of wildlife watchers report an Aspen Roller in Bavarian Forest National Park on a given day, against under 5% in July–August and October–April, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Aspen Roller sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Only Bavarian Forest National Park, in our data
Bavarian Forest National Park is the only park on Wallace's Line with enough records to rate Aspen Roller sightings: about 10% of wildlife watchers there report one on a given day.
Same genus: Ancylis
The closest relatives of the Aspen Roller that you can see in Bavarian Forest National Park (genus Ancylis) are Buckthorn Roller (about 10%) and Red Roller (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Aspen Roller is recorded against all the insects logged in Bavarian Forest National Park (12 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.
