Syromastus rhombeus
In 3 days ~20% in a week ~50%
Syromastus rhombeus, sometimes called the "rhombic leatherbug" is a species of European bugs in the family Coreidae, tribe Coreini. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mercantour National Park | 🇫🇷 France | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
With luck
About 10% of wildlife watchers report a Rhombic Leatherbug sighting in Cévennes National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 304th most-seen of the 996 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.
April
In that month about 20% of wildlife watchers report a Rhombic Leatherbug in Cévennes National Park on a given day, against under 5% in September and November–March, the lowest months.
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.
Among the best
Of the 3 parks where we can rate Rhombic Leatherbug sightings, Cévennes National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Mercantour National Park (France, about 10%).
Same family: Coreidae
The closest relatives of the Rhombic Leatherbug that you can see in Cévennes National Park (family Coreidae, Leaf-footed Bugs) are Dock Bug (about 20%), Western Conifer Seed Bug (about 20%) and Box Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rhombic Leatherbug is recorded against all the insects logged in Cévennes National Park (24 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.
