Aphaenogaster occidentalis
In 3 days ~10% in a week ~20%
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 San Francisco on a given day, based on 21 verified sightings from GBIF citizen-science data. It is the 356th most-seen of the 737 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Western Collared Ant in San Francisco on a given day, so our monthly data shows no clear season.
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.
Among the best
Of the 2 cities where we can rate Western Collared Ant sightings, San Francisco ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Portland (United States, under 5%).
Same family: Formicidae
The closest relatives of the Western Collared Ant that you can see in San Francisco (family Formicidae, Ants) are Argentine Ant (about 10%) and American Winter 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 San Francisco (21 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.
