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Alpine Longhorn Rosalia
Rosalia alpina
- KingdomAnimalia (Animals)
- PhylumArthropoda (Arthropods)
- ClassInsecta (Insects)
- OrderColeoptera (Beetles)
- FamilyCerambycidae (Longhorn Beetles)
- GenusRosalia
- SpeciesRosalia alpina (Alpine Longhorn Rosalia)
In 3 days ~50% in a week ~80%
34 Verified sightings at Triglav National Park From 2019 to 2026
212 In all 5 parks
July Best month
☀️ Diurnal When it's spotted
About the Alpine Longhorn Rosalia
The rosalia longicorn (Rosalia alpina) or alpine longhorn beetle is a large longicorn (family Cerambycidae) that is distinguished by its distinctive markings. The beetle lives in beech forests with sun exposure and clearings. It is a captivating and endangered species that graces the Euro-Caucasian region with its presence and lay eggs on stacked timber especially often in beech wood storage.
The species was first described as Cerambyx alpinus by Carl Linnaeus in his 1758 work Fauna Svecica. The description was written based on a specimen collected more than fifty years earlier by another scientist in the Swiss Alps. Linnaeus wrote that it was found in Scania and Blekinge.
The rosalia longicorn is 15 to 38 mm (0.59 to 1.50 in) long. The antennae can be up to twice as long as the rest of the body in males, and the same length in females. The elytra are flat, blue-gray, with variable black spots, including a prominent one on the thorax, a silky one in front, and a small one in back. Both the antennae and the legs have the same coloration as the body. The coloration serves as good camouflage with their preferred habitat, the European beech.
They... Wikipedia →
Recent sightings of Alpine Longhorn Rosalia in Triglav National Park
LIVEiNaturalistGlobal Distribution
Parks Where Found
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Triglav National Park | 🇸🇮 Slovenia | |
| 2 | Pyrénées National Park | 🇫🇷 France | |
| 3 | Picos de Europa National Park | 🇪🇸 Spain | |
| 4 | Cévennes National Park | 🇫🇷 France | |
| 5 | Aigüestortes National Park | 🇪🇸 Spain |
Cities Where Found
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vienna | 🇦🇹 Austria |
Closest Relatives at Triglav National Park
Before you go
What are the chances of seeing an Alpine Longhorn Rosalia in Triglav National Park?
Possible
About 20% of wildlife watchers report an Alpine Longhorn Rosalia sighting in Triglav National Park on a given day, based on 34 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 78th most-seen of the 260 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
When is the best time to see an Alpine Longhorn Rosalia in Triglav National Park?
July
In that month about 30% of wildlife watchers report an Alpine Longhorn Rosalia in Triglav National Park on a given day, against under 5% in September to May, the lowest months.
What time of day is best to see an Alpine Longhorn Rosalia?
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Alpine Longhorn Rosalia sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Is Triglav National Park the best place to see an Alpine Longhorn Rosalia?
Yes
Of the 5 parks where we can rate Alpine Longhorn Rosalia sightings, Triglav National Park has the highest daily chance: about 20%. Next come Pyrénées National Park (France, about 10%) and Picos de Europa National Park (Spain, about 10%).
Which relatives of the Alpine Longhorn Rosalia live in Triglav National Park?
Same family: Cerambycidae
The closest relatives of the Alpine Longhorn Rosalia that you can see in Triglav National Park (family Cerambycidae, Longhorn Beetles) are Spotted Longhorn Beetle (about 40%), Morimus funereus (about 30%) and Red Pine Longhorn Beetle (about 30%), with each one's daily chance of a sighting.
Where does the Alpine Longhorn Rosalia sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Alpine Longhorn Rosalia is recorded against all the insects logged in Triglav National Park (34 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.
