Cteniopus sulphureus
In 3 days ~50% in a week ~80%
Cteniopus sulphureus, the sulphur beetle, is a species of comb-clawed beetles belonging to the family Tenebrionidae subfamily Alleculinae. These beetles are mainly present in Denmark, Finland, Slovenia, Italy and Sweden.
The adults grow up to 7–8 millimetres (0.28–0.31 in) long. Elytra are pale yellow, while head and pronotum are orange-yellow. The shape of the head is extended forward. These thermophilic beetles can mainly be encountered in sunny places on inflorescences of Apiaceae and Asteraceae species, especially Achillea species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Aigüestortes National Park | 🇪🇸 Spain | |
| 2 | Triglav National Park | 🇸🇮 Slovenia | |
| 3 | Cévennes National Park | 🇫🇷 France | |
| 4 | Pyrénées National Park | 🇫🇷 France | |
| 5 | Wadden Sea National Park | 🇩🇪 Germany | |
| 6 | Bavarian Forest National Park | 🇩🇪 Germany |
Possible
About 20% of wildlife watchers report a Sulphur Beetle sighting in Aigüestortes National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 105th most-seen of the 256 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.
July
In that month about 30% of wildlife watchers report a Sulphur Beetle in Aigüestortes National Park on a given day, against under 5% in February–May and August–December, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Sulphur Beetle 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 Sulphur Beetle sightings, Aigüestortes National Park has the highest daily chance: about 20%. Next come Triglav National Park (Slovenia, about 10%) and Cévennes National Park (France, about 10%).
Same order: Coleoptera
The closest relatives of the Sulphur Beetle that you can see in Aigüestortes National Park (order Coleoptera, Beetles) are Seven-Spotted Lady Beetle (about 30%), Spotted Longhorn Beetle (about 30%) and Green Tiger Beetle (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sulphur Beetle is recorded against all the insects logged in Aigüestortes 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.
