Dorcus hopei
In 3 days ~20% in a week ~40%
Dorcus hopei is a beetle in the family Lucanidae. The life history of Dorcus hopei is fairly similar to that of all beetles in the Lucanidae family. D. hopei are often in their larval state for around one to two years. D. hopei eggs are laid in decaying wood logs in forests of China, Korea, and Japan. The larvae feed on the decaying wood by utilizing a species of yeast, Pichia, that breaks down the xylose of the rotting wood. The larval stage is unique for its ability to survive the harsh winters of its native range, capable of surviving in temperatures as low as -15°C for 24 hours. This is due to their unique antifreeze proteins, a protein not found in any of their relative Lucanidae and very few insects in general.
Because of their native range, the D. hopei has developed to overwinter the icy seasons in Japan, Korea, and China. The adults live for around three to five years, often on the grounds of forests. Studies have shown that the males and females often act differently from one another, often as a result of their sexual dimorphism. The males have different mandible sizes, a common trait amongst stag beetles and often use them depending on the size of them, with... Wikipedia →
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Hope's Stag Beetle sighting in Hangzhou on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 61st most-seen of the 172 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.
January and August
In those months about 20% of wildlife watchers report a Hope's Stag Beetle in Hangzhou on a given day, against under 5% in February–April, September–October and December, the lowest months.
4th of 4
Of the 4 cities where we can rate Hope's Stag Beetle sightings, Hangzhou ranks 4th at about 10%. The best odds are in Hefei (China, about 20%), Nanjing (China, about 20%) and Shanghai (China, about 10%).
Same family: Lucanidae
The closest relatives of the Hope's Stag Beetle that you can see in Hangzhou (family Lucanidae, Stag Beetles) are Titan Stag Beetle (about 20%), Epidorcus gracilis (about 10%) and Aegus laevicollis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Hope's Stag Beetle is recorded against all the insects logged in Hangzhou (10 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.
