Brassy False Long-Horned Beetle

Brassy False Long-Horned Beetle

Stenotrachelus aeneus

Daily sighting probability ~10% · With luck
at Sierra de Guadarrama National Park

In 3 days ~10% in a week ~30%

17 Verified sightings at Sierra de Guadarrama National Park From 2019 to 2026
64 In all 4 parks
May Best month
☀️ Diurnal When it's spotted

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Doñana National Park 🇪🇸 Spain
~20%
2 Sierra Nevada National Park 🇪🇸 Spain
~10%
3 Sierra de Guadarrama National Park 🇪🇸 Spain
~10%
4 Pyrénées National Park 🇫🇷 France
<5%

Cities Where Found

# City Country Daily sighting probability
1 Algiers 🇩🇿 Algeria
~10%
2 Barcelona 🇪🇸 Spain
<5%
3 Lisbon 🇵🇹 Portugal
<5%

Before you go

What are the chances of seeing a Brassy False Long-Horned Beetle in Sierra de Guadarrama National Park?

With luck

About 10% of wildlife watchers report a Brassy False Long-Horned Beetle sighting in Sierra de Guadarrama National Park on a given day, based on 17 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 281st most-seen of the 597 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.

When is the best time to see a Brassy False Long-Horned Beetle in Sierra de Guadarrama National Park?

May and June

In those months about 10% of wildlife watchers report a Brassy False Long-Horned Beetle in Sierra de Guadarrama National Park on a given day, against under 5% in July to April, the lowest months.

What time of day is best to see a Brassy False Long-Horned Beetle?

Between 11 am and 2 pm

Across all the parks we cover, that three-hour window holds the most Brassy False Long-Horned Beetle sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Is Sierra de Guadarrama National Park the best place to see a Brassy False Long-Horned Beetle?

3rd of 4

Of the 4 parks where we can rate Brassy False Long-Horned Beetle sightings, Sierra de Guadarrama National Park ranks 3rd at about 10%. The best odds are in Doñana National Park (Spain, about 20%) and Sierra Nevada National Park (Spain, about 10%).

Which relatives of the Brassy False Long-Horned Beetle live in Sierra de Guadarrama National Park?

Same order: Coleoptera

The closest relatives of the Brassy False Long-Horned Beetle that you can see in Sierra de Guadarrama National Park (order Coleoptera, Beetles) are Seven-Spotted Lady Beetle (about 20%), Physomeloe corallifer (about 20%) and Heliotaurus ruficollis (about 10%), with each one's daily chance of a sighting.

Where does the Brassy False Long-Horned Beetle sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Brassy False Long-Horned Beetle is recorded against all the insects logged in Sierra de Guadarrama National Park (17 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.

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