Tenthredo crassa
In 3 days ~30% in a week ~50%
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 Vanoise National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 252nd most-seen of the 308 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
June
In that month about 20% of wildlife watchers report a Tenthredo crassa in Vanoise 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.
Among the best
Of the 6 parks where we can rate Tenthredo crassa sightings, Vanoise National Park ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Triglav National Park (Slovenia, about 10%), 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 Vanoise National Park (order Hymenoptera, Ants, Bees, Wasps, and Sawflies) are Large Velvet Ant (about 20%), Early Bumble Bee (about 10%) and Brown-Black Carpenter Ant (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 Vanoise 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.
