Rocky Mountain Billbug

Rocky Mountain Billbug

Sphenophorus cicatristriatus

Daily sighting probability ~10% · With luck
at Denver

In 3 days ~10% in a week ~30%

38 Verified sightings at Denver
May Best month

About the Rocky Mountain Billbug

Sphenophorus cicatristriatus, known generally as the Rocky Mountain billbug or Denver billbug, is a species of true weevil in the beetle family Curculionidae. It is found in North America. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Denver 🇺🇸 United States
~10%
2 Mexico City 🇲🇽 México
<5%

Before you go

What are the chances of seeing a Rocky Mountain Billbug in Denver?

With luck

About 10% of wildlife watchers report a Rocky Mountain Billbug sighting in Denver on a given day, based on 38 verified sightings from GBIF citizen-science data. It is the 131st 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 30%, if each day is a fresh chance.

When is the best time to see a Rocky Mountain Billbug in Denver?

May–June and August

In those months about 10% of wildlife watchers report a Rocky Mountain Billbug in Denver on a given day, against under 5% in July and September–April, the lowest months.

Is Denver the best place to see a Rocky Mountain Billbug?

Yes

Of the 2 cities where we can rate Rocky Mountain Billbug sightings, Denver has the highest daily chance: about 10%. Next come Mexico City (México, under 5%).

Where does the Rocky Mountain Billbug sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Rocky Mountain Billbug is recorded against all the insects logged in Denver (38 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.

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