Tule Beetle

Tule Beetle

Tanystoma maculicolle

Daily sighting probability <5% · Rare
at Sacramento

In 3 days ~10% in a week ~20%

6 Verified sightings at Sacramento
October Best month

About the Tule Beetle

Tanystoma maculicolle is a species of beetle in the family Carabidae. It is found in southern Oregon and much of California, where it has been described as "extremely common". Its common names include tule beetle, overflow bug, and grease bug. It is especially familiar in the agricultural areas of the Central Valley of California, where it sometimes invades homes. 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 Sacramento 🇺🇸 United States
<5%
2 San Diego 🇺🇸 United States
<5%
3 Los Angeles 🇺🇸 United States
<5%
4 San Francisco 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a Tule Beetle in Sacramento?

Rare

Under 5% of wildlife watchers report a Tule Beetle sighting in Sacramento on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 318th most-seen of the 386 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.

When is the best time to see a Tule Beetle in Sacramento?

October

In that month about 10% of wildlife watchers report a Tule Beetle in Sacramento on a given day, against under 5% in November to September, the lowest months.

Is Sacramento the best place to see a Tule Beetle?

Yes

Of the 4 cities where we can rate Tule Beetle sightings, Sacramento has the highest daily chance: under 5%. Next come San Diego (United States, under 5%) and Los Angeles (United States, under 5%).

Where does the Tule Beetle sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Tule Beetle is recorded against all the insects logged in Sacramento (6 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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