Three-Ribbed Darkling Beetle

Three-Ribbed Darkling Beetle

Eleodes tricostata

Daily sighting probability ~10% · With luck
at Rocky Mountain National Park

In 3 days ~20% in a week ~40%

15 Verified sightings at Rocky Mountain National Park From 2019 to 2026
15 In 1 park
June Best month
☀️ Diurnal When it's spotted

About the Three-Ribbed Darkling Beetle

Eleodes tricostata is a species of desert stink beetle in the family Tenebrionidae. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Rocky Mountain National Park 🇺🇸 United States
~10%

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Denver 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a Three-Ribbed Darkling Beetle in Rocky Mountain National Park?

With luck

About 10% of wildlife watchers report a Three-Ribbed Darkling Beetle sighting in Rocky Mountain National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 81st most-seen of the 191 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.

When is the best time to see a Three-Ribbed Darkling Beetle in Rocky Mountain National Park?

May to July

In those months about 10% of wildlife watchers report a Three-Ribbed Darkling Beetle in Rocky Mountain National Park on a given day, against under 5% in August to April, the lowest months.

What time of day is best to see a Three-Ribbed Darkling Beetle?

Between 7 and 10 am

Across all the parks we cover, that three-hour window holds the most Three-Ribbed Darkling 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.

Where else can you see a Three-Ribbed Darkling Beetle?

Only Rocky Mountain National Park, in our data

Rocky Mountain National Park is the only park on Wallace's Line with enough records to rate Three-Ribbed Darkling Beetle sightings: about 10% of wildlife watchers there report one on a given day.

Where does the Three-Ribbed Darkling Beetle sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Three-Ribbed Darkling Beetle is recorded against all the insects logged in Rocky Mountain National Park (15 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.

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