Oryctes nasicornis
In 3 days ~60% in a week ~90%
The European rhinoceros beetle (Oryctes nasicornis) is a large flying beetle belonging to the subfamily Dynastinae. The elytra are reddish brown... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
Possible
About 30% of wildlife watchers report a European Rhinoceros Beetle sighting in Rome on a given day, based on 119 verified sightings from GBIF citizen-science data. It is the 5th most-seen of the 289 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
June
In that month about 50% of wildlife watchers report a European Rhinoceros Beetle in Rome on a given day, against under 5% in August–September and November–February, the lowest months. That is one of Rome's driest months, with about 35 mm of rain against 110 mm in November.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most European Rhinoceros Beetle sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 36 cities where we can rate European Rhinoceros Beetle sightings, Rome ranks 3rd at about 30%, level with the leaders once rounded. The best odds are in Naples (Italy, about 30%) and Yerevan (Armenia, about 30%).
Same family: Scarabaeidae
The closest relatives of the European Rhinoceros Beetle that you can see in Rome (family Scarabaeidae, Scarabs) are Mediterranean Spotted Chafer (about 30%), Pentodon bidens (about 10%) and European Rose Chafer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the European Rhinoceros Beetle is recorded against all the insects logged in Rome (119 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.
