Little Stag Beetle

Little Stag Beetle

Dorcus rectus

Daily sighting probability ~10% · With luck
at Seoul

In 3 days ~30% in a week ~50%

56 Verified sightings at Seoul
9 In 1 park From 2019 to 2026
June Best month
☀️🌙 Day & Night When it's spotted

About the Little Stag Beetle

Dorcus rectus, the little stag beetle, is a species of beetles in the family Lucanidae. It can be found in China(Liaoning), Korea, Japan, Russia. These beetles have a distinctive red shell that separates them from Dorcus curvidens. Males of this species have been observed to have mandible trimorphism, a characteristic that has only been described in two species of Lucanidae—with the other one being Odontolabis cuvera—"and a small number of other invertebrates" as of 2017. The mandibles are used by males as weapons. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Nikko National Park 🇯🇵 Japan
~20%

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Nagoya 🇯🇵 Japan
~20%
2 Busan 🇰🇷 South Korea
~20%
3 Sapporo 🇯🇵 Japan
~20%
4 Sendai 🇯🇵 Japan
~10%
5 Tokyo 🇯🇵 Japan
~10%
6 Osaka 🇯🇵 Japan
~10%
7 Seoul 🇰🇷 South Korea
~10%

Before you go

What are the chances of seeing a Little Stag Beetle in Seoul?

With luck

About 10% of wildlife watchers report a Little Stag Beetle sighting in Seoul on a given day, based on 56 verified sightings from GBIF citizen-science data. It is the 48th most-seen of the 525 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.

When is the best time to see a Little Stag Beetle in Seoul?

June

In that month about 20% of wildlife watchers report a Little Stag Beetle in Seoul on a given day, against under 5% in April and October–February, the lowest months.

What time of day is best to see a Little Stag Beetle?

Between 7 and 10 pm

Across all the parks we cover, that three-hour window holds the most Little Stag Beetle sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.

Is Seoul the best place to see a Little Stag Beetle?

7th of 7

Of the 7 cities where we can rate Little Stag Beetle sightings, Seoul ranks 7th at about 10%. The best odds are in Nagoya (Japan, about 20%), Busan (South Korea, about 20%) and Sapporo (Japan, about 20%).

Which relatives of the Little Stag Beetle live in Seoul?

Same family: Lucanidae

The closest relatives of the Little Stag Beetle that you can see in Seoul (family Lucanidae, Stag Beetles) are Titan Stag Beetle (about 10%) and Japanese Stag Beetle (about 10%), with each one's daily chance of a sighting.

Where does the Little Stag Beetle sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Little Stag Beetle is recorded against all the insects logged in Seoul (56 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.

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