Stenopterus ater
In 3 days ~50% in a week ~80%
Stenopterus ater is a species of longhorn beetle found across the Western Mediterranean region from North Africa to France and Italy. The larvae grow in dead wood and the adults visit Umbelliferae flowers in summer. They are about 6 to 14 mm long with males and females being differently coloured. The elytra are all black in females and yellowish brown in males. A case of gynandromorphism has been recorded in the species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
Possible
About 20% of wildlife watchers report a Stenopterus ater sighting in Sierra Nevada National Park on a given day, based on 26 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 52nd most-seen of the 479 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.
June and July
In those months about 40% of wildlife watchers report a Stenopterus ater in Sierra Nevada National Park on a given day, against under 5% in September to May, the lowest months.
Between 6 and 9 pm
Across all the parks we cover, that three-hour window holds the most Stenopterus ater sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
Yes
Of the 2 parks where we can rate Stenopterus ater sightings, Sierra Nevada National Park has the highest daily chance: about 20%. Next come Sierra de Guadarrama National Park (Spain, about 10%).
Same family: Cerambycidae
The closest relatives of the Stenopterus ater that you can see in Sierra Nevada National Park (family Cerambycidae, Longhorn Beetles) are Chlorophorus trifasciatus (about 20%), Fairy-Ring Longhorn Beetle (about 20%) and Stictoleptura otini (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Stenopterus ater is recorded against all the insects logged in Sierra Nevada National Park (26 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.
