Prosopocoilus astacoides
In 3 days ~20% in a week ~50%
Prosopocoilus astacoides is a beetle of the family Lucanidae. It lives 8–10 months and is around 50–70 mm. Like all beetles in the Prosopocoilus genus they have sharp mandibles used for fighting. They will shake their antenna when angry. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Beijing | 🇨🇳 China |
With luck
About 10% of wildlife watchers report a Common Red Stag Beetle sighting in Beijing on a given day, based on 61 verified sightings from GBIF citizen-science data. It is the 53rd most-seen of the 401 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.
July and August
In those months about 20% of wildlife watchers report a Common Red Stag Beetle in Beijing on a given day, against under 5% in November to May, the lowest months. Those are among Beijing's wettest months, with about 130 mm of rain a month against almost none in January.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Common Red Stag Beetle sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Only Beijing, in our data
Beijing is the only city on Wallace's Line with enough records to rate Common Red Stag Beetle sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Coleoptera
The closest relatives of the Common Red Stag Beetle that you can see in Beijing (order Coleoptera, Beetles) are Asian Lady Beetle (about 30%), Carabus brandti (about 10%) and Eucryptorrhynchus scrobiculatus (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Red Stag Beetle is recorded against all the insects logged in Beijing (61 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.
