Polydontomyia curvipes
In 3 days ~10%
Polydontomyia is a genus of rat-tail maggot flies in the family Syrphidae. The genus is monotypic, comprising a single species, Polydontomyia curvipes, also known as the dimorphic sickleleg. It was formerly a member of the genus Lejops. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Denver | 🇺🇸 United States | |
| 2 | New York City | 🇺🇸 United States | |
| 3 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Dimorphic Sickleleg sighting in San Francisco on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 416th 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 Dimorphic Sickleleg in San Francisco on a given day, so our monthly data shows no clear season.
Among the best
Of the 3 cities where we can rate Dimorphic Sickleleg sightings, San Francisco ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Denver (United States, under 5%) and New York City (United States, under 5%).
Same family: Syrphidae
The closest relatives of the Dimorphic Sickleleg that you can see in San Francisco (family Syrphidae, Hover Flies) are Oblique Streaktail (about 10%), Eurasian Drone Fly (about 10%) and Thick-Legged Hover Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dimorphic Sickleleg is recorded against all the insects logged in San Francisco (16 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.
