Brachycentrus subnubilis
In 3 days ~20% in a week ~30%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vienna | 🇦🇹 Austria |
With luck
About 10% of wildlife watchers report a Grannom Caddisfly sighting in Bavarian Forest National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 585th 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 30%, if each day is a fresh chance.
April
In that month about 20% of wildlife watchers report a Grannom Caddisfly in Bavarian Forest National Park on a given day, against under 5% in May to March, the lowest months.
Between 5 and 8 pm
Across all the parks we cover, that three-hour window holds the most Grannom Caddisfly sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
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 Grannom Caddisfly sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Trichoptera
The closest relatives of the Grannom Caddisfly that you can see in Bavarian Forest National Park (order Trichoptera, Caddisflies) are Mottled Sedge (about 10%) and Cinnamon Sedge (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Grannom Caddisfly is recorded against all the insects logged in Bavarian Forest National Park (9 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.
