Ceriana tridens
In 3 days ~10% in a week ~20%
Ceriana tridens is a species of syrphid fly found within the family Syrphidae. It can be found in 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 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Western Wasp Fly sighting in Sacramento on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 350th 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 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Western Wasp Fly in Sacramento on a given day, so our monthly data shows no clear season.
Yes
Of the 2 cities where we can rate Western Wasp Fly sightings, Sacramento has the highest daily chance: under 5%. Next come Los Angeles (United States, under 5%).
Same family: Syrphidae
The closest relatives of the Western Wasp Fly 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 Wasp Fly is recorded against all the insects logged in Sacramento (6 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.
