Sphaerophoria sulphuripes
In 3 days ~20% in a week ~40%
Sphaerophoria sulphuripes, the forked globetail, is a species of syrphid flies in the family Syrphidae native to Western North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sacramento | 🇺🇸 United States | |
| 2 | Portland | 🇺🇸 United States | |
| 3 | Seattle | 🇺🇸 United States | |
| 4 | San Francisco | 🇺🇸 United States | |
| 5 | Vancouver | 🇨🇦 Canada | |
| 6 | Los Angeles | 🇺🇸 United States | |
| 7 | San Diego | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Forked Globetail sighting in Portland on a given day, based on 108 verified sightings from GBIF citizen-science data. It is the 66th 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 40%, if each day is a fresh chance.
June
In that month about 20% of wildlife watchers report a Forked Globetail in Portland on a given day, against under 5% in September to March, the lowest months. That is one of Portland's driest months, with about 55 mm of rain against 250 mm in December.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Forked Globetail sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 7 cities where we can rate Forked Globetail sightings, Portland ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Sacramento (United States, about 10%).
Same family: Syrphidae
The closest relatives of the Forked Globetail that you can see in Portland (family Syrphidae, Hover Flies) are Yellow-Haired Sun Fly (about 10%), Narcissus Bulb Fly (about 10%) and Eurasian Drone Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Forked Globetail is recorded against all the insects logged in Portland (108 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.
