Tachytrechus angustipennis
In 3 days ~10%
Tachytrechus angustipennis is a species of long-legged fly in the family Dolichopodidae. It is distributed across the United States, from California and Utah to Washington, D.C., south to Florida, and south to the Neotropical realm. It is also recorded from the Hawaiian Islands. Adults inhabit algal mats at Yellowstone National Park. The species is predatory, with their primary prey being Paracoenia eggs and larvae. Males are territorial. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Los Angeles | 🇺🇸 United States | |
| 2 | San Diego | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States | |
| 4 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Tachytrechus angustipennis sighting in San Francisco on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 550th most-seen of the 737 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Tachytrechus angustipennis in San Francisco on a given day, so our monthly data shows no clear season.
Among the best
Of the 4 cities where we can rate Tachytrechus angustipennis sightings, San Francisco ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Los Angeles (United States, under 5%), San Diego (United States, under 5%) and Austin (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Tachytrechus angustipennis is recorded against all the insects logged in San Francisco (9 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.
