Sinodendron cylindricum
In 3 days ~10%
Sinodendron cylindricum, the rhinoceros stag beetle, horned stag beetle, or simply the rhinoceros beetle, is a species of stag beetle native to Europe. It is characterised by a clear sexual dimorphism. The beetles reach a body length of 12 to 16 millimeters and have a very shiny, black body, sometimes with turquoise sheen. Despite being in the family Lucanidae (stag beetles), they look rather like true rhinoceros beetles, which are well known for their rhinoceros-like horn. The body is cylindrical and the elytra and thorax have distinct rows of pits and grooves. The males have a well-developed horn on their heads, which is significantly smaller in the females. In addition, the cavities on the pronotum in the female are much shallower than the distinct cavities in the male. The larvae are white and soft with brown heads.
With the exception of southwestern Spain and Portugal and northern Scandinavia, the species occurs throughout the European continent and the British Isles to western Siberia. The beetle prefers primary deciduous forests at cooler and higher altitudes, but can also be found in old willow stands, avenue and street trees... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Białowieża National Park | 🇵🇱 Poland | |
| 2 | Cairngorms National Park | 🇬🇧 United Kingdom |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Leeds | 🇬🇧 United Kingdom | |
| 2 | Nizhny Novgorod | 🇷🇺 Russia | |
| 3 | Birmingham | 🇬🇧 United Kingdom | |
| 4 | Stockholm | 🇸🇪 Sweden | |
| 5 | Copenhagen | 🇩🇰 Denmark | |
| 6 | Hamburg | 🇩🇪 Germany | |
| 7 | Helsinki | 🇫🇮 Finland | |
| 8 | Moscow | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Horned Stag Beetle sighting in Moscow on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 774th most-seen of the 1111 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Horned Stag Beetle in Moscow on a given day, so our monthly data shows no clear season.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Horned Stag Beetle sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
8th of 8
Of the 8 cities where we can rate Horned Stag Beetle sightings, Moscow ranks 8th at under 5%. The best odds are in Leeds (United Kingdom, about 10%), Nizhny Novgorod (Russia, about 10%) and Birmingham (United Kingdom, about 10%).
GBIF citizen-science records
It is estimated from how often the Horned Stag Beetle is recorded against all the insects logged in Moscow (8 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.
