Sinodendron rugosum
In 3 days ~20% in a week ~40%
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 Portland on a given day, based on 82 verified sightings from GBIF citizen-science data. It is the 78th most-seen of the 507 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.
June
In that month about 20% of wildlife watchers report a Rugose Stag Beetle in Portland on a given day, against under 5% in August–October and December–May, the lowest months. That is one of Portland's driest months, with about 55 mm of rain against 250 mm in December.
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 3 cities where we can rate Rugose Stag Beetle sightings, Portland has the highest daily chance: about 10%. Next come Seattle (United States, about 10%) and Vancouver (Canada, under 5%).
Same order: Coleoptera
The closest relatives of the Rugose Stag Beetle that you can see in Portland (order Coleoptera, Beetles) are Asian Lady Beetle (about 30%), Seven-Spotted Lady Beetle (about 20%) and Western Polished Lady Beetle (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rugose Stag Beetle is recorded against all the insects logged in Portland (82 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.
