Rhombic Leatherbug

Rhombic Leatherbug

Syromastus rhombeus

Daily sighting probability ~10% · With luck
at Bucharest

In 3 days ~20% in a week ~50%

21 Verified sightings at Bucharest
46 In all 3 parks From 2019 to 2026
March Best month
☀️ Diurnal When it's spotted

About the Rhombic Leatherbug

Syromastus rhombeus, sometimes called the "rhombic leatherbug" is a species of European bugs in the family Coreidae, tribe Coreini. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Mercantour National Park 🇫🇷 France
~10%
2 Cévennes National Park 🇫🇷 France
~10%
3 Sierra de Guadarrama National Park 🇪🇸 Spain
~10%

Cities Where Found

# City Country Daily sighting probability
1 Bucharest 🇷🇴 Romania
~10%
2 Berlin 🇩🇪 Germany
~10%
3 Prague 🇨🇿 Czechia
~10%
4 Vienna 🇦🇹 Austria
<5%
5 Porto 🇵🇹 Portugal
<5%
6 Kyiv 🇺🇦 Ukraine
<5%
7 Lyon 🇫🇷 France
<5%
8 Madrid 🇪🇸 Spain
<5%
9 Paris 🇫🇷 France
<5%
10 London 🇬🇧 United Kingdom
<5%

Before you go

What are the chances of seeing a Rhombic Leatherbug in Bucharest?

With luck

About 10% of wildlife watchers report a Rhombic Leatherbug sighting in Bucharest on a given day, based on 21 verified sightings from GBIF citizen-science data. It is the 68th most-seen of the 361 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.

When is the best time to see a Rhombic Leatherbug in Bucharest?

March

In that month about 20% of wildlife watchers report a Rhombic Leatherbug in Bucharest on a given day, against under 5% in September and November–February, the lowest months.

What time of day is best to see a Rhombic Leatherbug?

Between 1 and 4 pm

Across all the parks we cover, that three-hour window holds the most Rhombic Leatherbug sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Is Bucharest the best place to see a Rhombic Leatherbug?

Yes

Of the 11 cities where we can rate Rhombic Leatherbug sightings, Bucharest has the highest daily chance: about 10%. Next come Berlin (Germany, about 10%) and Prague (Czechia, about 10%).

Which relatives of the Rhombic Leatherbug live in Bucharest?

Same family: Coreidae

The closest relatives of the Rhombic Leatherbug that you can see in Bucharest (family Coreidae, Leaf-footed Bugs) are Dock Bug (about 10%), Ceraleptus gracilicornis (about 10%) and Western Conifer Seed Bug (about 10%), with each one's daily chance of a sighting.

Where does the Rhombic Leatherbug sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Rhombic Leatherbug is recorded against all the insects logged in Bucharest (21 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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