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 Portland on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 358th most-seen of the 507 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.
September
In that month about 10% of wildlife watchers report a Western Collared Ant in Portland on a given day, against under 5% in October to August, the lowest months. That is one of Portland's driest months, with about 55 mm of rain against 250 mm in December.
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.
Yes
Of the 2 cities where we can rate Western Collared Ant sightings, Portland has the highest daily chance: under 5%. Next come San Francisco (United States, under 5%).
Same family: Formicidae
The closest relatives of the Western Collared Ant that you can see in Portland (family Formicidae, Ants) are American Winter Ant (about 10%), Immigrant Pavement 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 Portland (9 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.
