Coastal Groundbug

Coastal Groundbug

Beosus maritimus

Daily sighting probability ~10% · With luck
at Madrid

In 3 days ~20% in a week ~30%

18 Verified sightings at Madrid
35 In all 4 parks From 2019 to 2026
June Best month
☀️🌙 Day & Night When it's spotted

About the Coastal Groundbug

Beosus maritimus is a species of dirt-colored seed bug in the family Rhyparochromidae, found mainly in Europe and western Asia. Wikipedia →

Global Distribution

Parks Where Found

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

Cities Where Found

# City Country Daily sighting probability
1 Bucharest 🇷🇴 Romania
~20%
2 Lyon 🇫🇷 France
~10%
3 Budapest 🇭🇺 Hungary
~10%
4 Paris 🇫🇷 France
~10%
5 Kyiv 🇺🇦 Ukraine
~10%
6 Madrid 🇪🇸 Spain
~10%
7 Barcelona 🇪🇸 Spain
<5%
8 Porto 🇵🇹 Portugal
<5%
9 Lisbon 🇵🇹 Portugal
<5%
10 Berlin 🇩🇪 Germany
<5%

Before you go

What are the chances of seeing a Coastal Groundbug in Madrid?

With luck

About 10% of wildlife watchers report a Coastal Groundbug sighting in Madrid on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 186th most-seen of the 457 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.

When is the best time to see a Coastal Groundbug in Madrid?

June and July

In those months about 10% of wildlife watchers report a Coastal Groundbug in Madrid on a given day, against under 5% in August to May, the lowest months. Those are among Madrid's driest months, with about 15 mm of rain a month against 65 mm in October.

What time of day is best to see a Coastal Groundbug?

Between noon and 3 pm

Across all the parks we cover, that three-hour window holds the most Coastal Groundbug sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.

Is Madrid the best place to see a Coastal Groundbug?

6th of 13

Of the 13 cities where we can rate Coastal Groundbug sightings, Madrid ranks 6th at about 10%. The best odds are in Bucharest (Romania, about 20%), Lyon (France, about 10%) and Budapest (Hungary, about 10%).

Where does the Coastal Groundbug sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Coastal Groundbug is recorded against all the insects logged in Madrid (18 verified sightings), 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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