Aphaenogaster occidentalis
In 3 days ~10% in a week ~30%
Aphaenogaster occidentalis is a species of ant in the family Formicidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yosemite National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Western Collared Ant sighting in Yosemite National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 192nd most-seen of the 227 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.
April
In that month about 10% of wildlife watchers report a Western Collared Ant in Yosemite National Park on a given day, against under 5% in May to March, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Western Collared Ant sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Only Yosemite National Park, in our data
Yosemite National Park is the only park on Wallace's Line with enough records to rate Western Collared Ant sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Formicidae
The closest relatives of the Western Collared Ant that you can see in Yosemite National Park (family Formicidae, Ants) are Western Black Carpenter Ant (about 10%) and Western Velvety Tree Ant (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Western Collared Ant is recorded against all the insects logged in Yosemite National Park (6 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.
