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 Mercantour National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 348th most-seen of the 412 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 30% of wildlife watchers report a Rhombic Leatherbug in Mercantour National Park on a given day, against under 5% in May, August and October–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.
Yes
Of the 3 parks where we can rate Rhombic Leatherbug sightings, Mercantour National Park has the highest daily chance: about 10%. Next come Cévennes National Park (France, about 10%) and Sierra de Guadarrama National Park (Spain, about 10%).
GBIF citizen-science records
It is estimated from how often the Rhombic Leatherbug is recorded against all the insects logged in Mercantour National Park (5 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.
