Trichocera annulata
In 3 days ~10% in a week ~20%
Trichocera annulata, commonly known as the winter gnat, is a species of winter crane fly, of the order Diptera. First described by German entomologist Johann Wilhelm Meigen in 1818, it is found in Europe and North America. In North America, it is known from Alaska south to California and in Newfoundland. It is an introduced species in New Zealand. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | Paris | 🇫🇷 France | |
| 3 | Seattle | 🇺🇸 United States | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Melbourne | 🇦🇺 Australia | |
| 6 | New York City | 🇺🇸 United States | |
| 7 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Winter Gnat sighting in Seattle on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 380th most-seen of the 428 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 Winter Gnat in Seattle on a given day, so our monthly data shows no clear season.
Among the best
Of the 7 cities where we can rate Winter Gnat sightings, Seattle ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Portland (United States, under 5%) and Paris (France, under 5%).
Same order: Diptera
The closest relatives of the Winter Gnat that you can see in Seattle (order Diptera, Flies) are Yellow-Haired Sun Fly (about 10%), Eurasian Drone Fly (about 10%) and Narcissus Bulb Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Winter Gnat is recorded against all the insects logged in Seattle (5 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.
