Platycheirus trichopus
In 3 days ~10% in a week ~20%
Platycheirus trichopus, the western forest sedgesitter, is a species of syrphid fly in the Bacchini tribe of the Syrphidae family. This flower fly is typically found west of the Rocky Mountains in North America. Most Platycheirus species cannot be identified past genus without microscopic examination, but according to Even Dankowicz, P. trichopus has a unique set of characteristics that make it an exception when/where high quality images of the head/face are available. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sacramento | 🇺🇸 United States | |
| 2 | Vancouver | 🇨🇦 Canada | |
| 3 | Portland | 🇺🇸 United States | |
| 4 | San Francisco | 🇺🇸 United States | |
| 5 | San Diego | 🇺🇸 United States | |
| 6 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Western Forest Sedgesitter sighting in Portland on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 269th 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.
February and June
In those months about 10% of wildlife watchers report a Western Forest Sedgesitter in Portland on a given day, against under 5% in March–May and July–January, the lowest months.
Among the best
Of the 6 cities where we can rate Western Forest Sedgesitter sightings, Portland ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Sacramento (United States, under 5%) and Vancouver (Canada, under 5%).
Same family: Syrphidae
The closest relatives of the Western Forest Sedgesitter 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 Western Forest Sedgesitter is recorded against all the insects logged in Portland (15 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.
