Polydontomyia curvipes
In 3 days ~10% in a week ~20%
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 Denver on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 414th most-seen of the 461 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 Dimorphic Sickleleg in Denver on a given day, so our monthly data shows no clear season.
Yes
Of the 3 cities where we can rate Dimorphic Sickleleg sightings, Denver has the highest daily chance: under 5%. Next come New York City (United States, under 5%) and San Francisco (United States, under 5%).
Same family: Syrphidae
The closest relatives of the Dimorphic Sickleleg that you can see in Denver (family Syrphidae, Hover Flies) are Eurasian Drone Fly (about 10%), Margined Calligrapher (about 10%) and Large-Tailed Aphideater (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 Denver (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.
