Tenthredo crassa
In 3 days ~40% in a week ~70%
Tenthredo crassa is a sawfly species belonging to the family Tenthredinidae (common sawflies). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Triglav National Park | 🇸🇮 Slovenia | |
| 2 | Tatra National Park | 🇸🇰 Slovakia | |
| 3 | Hohe Tauern National Park | 🇦🇹 Austria | |
| 4 | Vanoise National Park | 🇫🇷 France | |
| 5 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 6 | Pyrénées National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Tenthredo crassa sighting in Triglav National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 121st most-seen of the 260 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Tenthredo crassa in Triglav National Park on a given day, against under 5% in September to May, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Tenthredo crassa sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 6 parks where we can rate Tenthredo crassa sightings, Triglav National Park has the highest daily chance: about 10%. Next come Tatra National Park (Slovakia, about 10%) and Hohe Tauern National Park (Austria, about 10%).
Same order: Hymenoptera
The closest relatives of the Tenthredo crassa that you can see in Triglav National Park (order Hymenoptera, Ants, Bees, Wasps, and Sawflies) are Common Carder Bumble Bee (about 20%), Brown-Black Carpenter Ant (about 20%) and European Hornet (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tenthredo crassa is recorded against all the insects logged in Triglav National Park (13 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.
