Rugose Stag Beetle

Rugose Stag Beetle

Sinodendron rugosum

Daily sighting probability <5% · Rare
at Vancouver

In 3 days ~10% in a week ~30%

58 Verified sightings at Vancouver
25 In all 2 parks From 2019 to 2026
June Best month
☀️ Diurnal When it's spotted

About the Rugose Stag Beetle

Sinodendron rugosum is a species of the family Lucanidae, the stag beetles. It is commonly referred to as the rugose stag beetle, and is the only known member of the genus Sinodendron to occur in western North America. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Olympic National Park 🇺🇸 United States
~10%
2 Great Bear Rainforest 🇨🇦 Canada
<5%

Cities Where Found

# City Country Daily sighting probability
1 Portland 🇺🇸 United States
~10%
2 Seattle 🇺🇸 United States
~10%
3 Vancouver 🇨🇦 Canada
<5%

Before you go

What are the chances of seeing a Rugose Stag Beetle in Vancouver?

Rare

Under 5% of wildlife watchers report a Rugose Stag Beetle sighting in Vancouver on a given day, based on 58 verified sightings from GBIF citizen-science data. It is the 110th most-seen of the 482 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.

When is the best time to see a Rugose Stag Beetle in Vancouver?

June and July

In those months about 10% of wildlife watchers report a Rugose Stag Beetle in Vancouver on a given day, against under 5% in August to May, the lowest months. Those are among Vancouver's driest months, with about 35 mm of rain a month against 210 mm in November.

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

Between 2 and 5 pm

Across all the parks we cover, that three-hour window holds the most Rugose 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.

Is Vancouver the best place to see a Rugose Stag Beetle?

3rd of 3

Of the 3 cities where we can rate Rugose Stag Beetle sightings, Vancouver ranks 3rd at under 5%. The best odds are in Portland (United States, about 10%) and Seattle (United States, about 10%).

Where does the Rugose Stag Beetle sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Rugose Stag Beetle is recorded against all the insects logged in Vancouver (58 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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