Lucanus mazama
In 3 days ~10% in a week ~20%
Lucanus mazama is a beetle of the family Lucanidae. Its common name is the cottonwood stag beetle. It is considered "scaraboid" but is not necessarily confined to deserts. They are often found in the wood chip ground covering at playgrounds. It is located primarily in the western and southwestern United States. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Zion National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Salt Lake City | 🇺🇸 United States | |
| 2 | Denver | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Cottonwood Stag Beetle sighting in Denver on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 216th most-seen of the 461 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
July
In that month about 10% of wildlife watchers report a Cottonwood Stag Beetle in Denver on a given day, against under 5% in August to June, the lowest months. That is one of Denver's wettest months, with about 60 mm of rain against 15 mm in January.
Between 5 and 8 am
Across all the parks we cover, that three-hour window holds the most Cottonwood Stag Beetle sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
2nd of 2
Of the 2 cities where we can rate Cottonwood Stag Beetle sightings, Denver ranks 2nd at under 5%. The best odds are in Salt Lake City (United States, about 10%).
Same order: Coleoptera
The closest relatives of the Cottonwood Stag Beetle that you can see in Denver (order Coleoptera, Beetles) are Japanese Beetle (about 30%), Seven-Spotted Lady Beetle (about 20%) and Convergent Lady Beetle (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cottonwood Stag Beetle is recorded against all the insects logged in Denver (16 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.
