Mesosa nebulosa
In 3 days ~10% in a week ~20%
Mesosa nebulosa is a species of beetle in the family Cerambycidae. It was described by Johan Christian Fabricius in 1781, originally under the genus Lamia. It has a wide distribution throughout Europe and the Caucasus. It measures between 9 and 15 mm (0.35 and 0.59 in).
M. nebulosa feeds on Corylus avellana, Ficus carica, and Juglans regia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pyrénées National Park | 🇫🇷 France |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a White-Clouded Longhorn Beetle sighting in Pyrénées National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 940th most-seen of the 1277 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
May and November
In those months about 10% of wildlife watchers report a White-Clouded Longhorn Beetle in Pyrénées National Park on a given day, against under 5% in June–October and December–April, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most White-Clouded Longhorn 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.
Only Pyrénées National Park, in our data
Pyrénées National Park is the only park on Wallace's Line with enough records to rate White-Clouded Longhorn Beetle sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Cerambycidae
The closest relatives of the White-Clouded Longhorn Beetle that you can see in Pyrénées National Park (family Cerambycidae, Longhorn Beetles) are Iberodorcadion fuliginator (about 20%), Spotted Longhorn Beetle (about 20%) and Alpine Longhorn Rosalia (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-Clouded Longhorn Beetle is recorded against all the insects logged in Pyrénées National Park (7 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.
