Serrated Darkling Beetle

Serrated Darkling Beetle

Iphthiminus serratus

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

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

23 Verified sightings at Yellowstone National Park From 2019 to 2026
58 In all 5 parks
June Best month
☀️ Diurnal When it's spotted

About the Serrated Darkling Beetle

Iphthiminus serratus is a species of darkling beetles in the subfamily Tenebrioninae. Originally I. sublaevis and I. salebrosus were considered subspecies of I. serratus due to minor geographical variation, but this variation is gradual and they are now considered synonyms. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Glacier National Park 🇺🇸 United States
~10%
2 Sequoia and Kings Canyon National Parks 🇺🇸 United States
~10%
3 Yellowstone National Park 🇺🇸 United States
~10%
4 Grand Teton National Park 🇺🇸 United States
~10%
5 Yosemite National Park 🇺🇸 United States
<5%

Cities Where Found

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

Before you go

What are the chances of seeing a Serrated Darkling Beetle in Yellowstone National Park?

With luck

About 10% of wildlife watchers report a Serrated Darkling Beetle sighting in Yellowstone National Park on a given day, based on 23 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 48th most-seen of the 160 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 Serrated Darkling Beetle in Yellowstone National Park?

May to September

In those months about 10% of wildlife watchers report a Serrated Darkling Beetle in Yellowstone National Park on a given day, against under 5% in October to April, the lowest months.

What time of day is best to see a Serrated Darkling Beetle?

Between 1 and 4 pm

Across all the parks we cover, that three-hour window holds the most Serrated Darkling Beetle sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Is Yellowstone National Park the best place to see a Serrated Darkling Beetle?

Among the best

Of the 5 parks where we can rate Serrated Darkling Beetle sightings, Yellowstone National Park ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Glacier National Park (United States, about 10%) and Sequoia and Kings Canyon National Parks (United States, about 10%).

Where does the Serrated Darkling Beetle sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Serrated Darkling Beetle is recorded against all the insects logged in Yellowstone National Park (23 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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