Deporaus betulae
In 3 days ~10% in a week ~30%
Deporaus betulae is a species of European weevil that feeds on birches (Betula spp.). It belongs to the family Attelabidae and tribe Deporaini. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Saint Petersburg | 🇷🇺 Russia | |
| 3 | Moscow | 🇷🇺 Russia |
With luck
About 10% of wildlife watchers report a Birch Leaf-Rolling Weevil sighting in Bavarian Forest National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 727th most-seen of the 1115 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.
May and June
In those months about 10% of wildlife watchers report a Birch Leaf-Rolling Weevil in Bavarian Forest National Park on a given day, against under 5% in July to April, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Birch Leaf-Rolling Weevil sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Birch Leaf-Rolling Weevil sightings, Bavarian Forest National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Cairngorms National Park (United Kingdom, about 10%).
Same family: Attelabidae
The closest relatives of the Birch Leaf-Rolling Weevil that you can see in Bavarian Forest National Park (family Attelabidae, Leaf-rolling Weevils) are Byctiscus populi (about 10%) and Hazel Leaf-Roller Weevil (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Birch Leaf-Rolling Weevil is recorded against all the insects logged in Bavarian Forest National Park (7 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.
