Sinodendron rugosum
In 3 days ~10% in a week ~30%
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 →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Olympic National Park | 🇺🇸 United States | |
| 2 | Great Bear Rainforest | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a Rugose Stag Beetle sighting in Olympic National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 105th most-seen of the 207 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.
April, June and August
In those months about 10% of wildlife watchers report a Rugose Stag Beetle in Olympic National Park on a given day, against under 5% in May, July and September–March, the lowest months. Those are among Olympic National Park's driest months, with about 100 mm of rain a month against 370 mm in November.
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.
Yes
Of the 2 parks where we can rate Rugose Stag Beetle sightings, Olympic National Park has the highest daily chance: about 10%. Next come Great Bear Rainforest (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Rugose Stag Beetle is recorded against all the insects logged in Olympic National Park (12 verified sightings from 2019 to 2026), 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.
