Eupeodes fumipennis
In 3 days ~20% in a week ~50%
Eupeodes fumipennis, the western aphideater, is a species of hover fly in the family Syrphidae. As the common name implies, larvae prey on plant-sucking insects, primarily aphids. Like other members of the family, adults often hover over the plants they visit. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Channel Islands National Park | 🇺🇸 United States | |
| 2 | Great Bear Rainforest | 🇨🇦 Canada | |
| 3 | Banff National Park | 🇨🇦 Canada | |
| 4 | Joshua Tree National Park | 🇺🇸 United States | |
| 5 | Yosemite National Park | 🇺🇸 United States | |
| 6 | Olympic National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sacramento | 🇺🇸 United States | |
| 2 | Portland | 🇺🇸 United States | |
| 3 | Vancouver | 🇨🇦 Canada | |
| 4 | Seattle | 🇺🇸 United States | |
| 5 | San Francisco | 🇺🇸 United States | |
| 6 | Los Angeles | 🇺🇸 United States | |
| 7 | San Diego | 🇺🇸 United States | |
| 8 | Calgary | 🇨🇦 Canada | |
| 9 | Salt Lake City | 🇺🇸 United States | |
| 10 | Phoenix | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Western Aphideater sighting in Portland on a given day, based on 128 verified sightings from GBIF citizen-science data. It is the 55th most-seen of the 507 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
February to October
In those months about 10% of wildlife watchers report a Western Aphideater in Portland on a given day, against under 5% in November to January, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Western Aphideater sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 10
Of the 10 cities where we can rate Western Aphideater sightings, Portland ranks 2nd at about 10%. The best odds are in Sacramento (United States, about 20%).
GBIF citizen-science records
It is estimated from how often the Western Aphideater is recorded against all the insects logged in Portland (128 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.
