Platycheirus trichopus
In 3 days ~10% in a week ~30%
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 Sacramento on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 184th most-seen of the 386 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
February, April and December
In those months about 10% of wildlife watchers report a Western Forest Sedgesitter in Sacramento on a given day, against under 5% in January, March and May–November, the lowest months. Those are among Sacramento's wettest months, with about 85 mm of rain a month against almost none in July.
Yes
Of the 6 cities where we can rate Western Forest Sedgesitter sightings, Sacramento has the highest daily chance: under 5%. Next come Vancouver (Canada, under 5%) and Portland (United States, under 5%).
Same family: Syrphidae
The closest relatives of the Western Forest Sedgesitter that you can see in Sacramento (family Syrphidae, Hover Flies) are Western Aphideater (about 20%), Margined Calligrapher (about 20%) and Oblique Streaktail (about 20%), 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 Sacramento (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.
