Oryctes nasicornis
In 3 days ~20% in a week ~40%
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 |
With luck
About 10% of wildlife watchers report a European Rhinoceros Beetle sighting in Cologne on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 73rd most-seen of the 235 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April to June
In those months about 10% of wildlife watchers report a European Rhinoceros Beetle in Cologne on a given day, against under 5% in July to March, the lowest months.
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.
21st of 36
Of the 36 cities where we can rate European Rhinoceros Beetle sightings, Cologne ranks 21st at about 10%. The best odds are in Naples (Italy, about 30%), Yerevan (Armenia, about 30%) and Rome (Italy, about 30%).
Same family: Scarabaeidae
The closest relatives of the European Rhinoceros Beetle that you can see in Cologne (family Scarabaeidae, Scarabs) are Mediterranean Spotted Chafer (about 10%), European Rose Chafer (about 10%) and Valgus hemipterus (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 Cologne (15 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.
