Eristalis obscura
In 3 days ~10%
Eristalis obscura, the dusky drone fly, is a common species of syrphid fly first officially described by Loew in 1866. This species is widespread in the northern part of North America and Europe east to Siberia. The larvae are aquatic filter-feeders of the rat-tailed type. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Moscow | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Dusky Drone Fly sighting in Moscow on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 774th most-seen of the 1111 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 Dusky Drone Fly in Moscow on a given day, so our monthly data shows no clear season.
Only Moscow, in our data
Moscow is the only city on Wallace's Line with enough records to rate Dusky Drone Fly sightings: under 5% of wildlife watchers there report one on a given day.
Same genus: Eristalis
The closest relatives of the Dusky Drone Fly that you can see in Moscow (genus Eristalis, Drone Flies) are Common Drone Fly (about 10%) and Eurasian Drone Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dusky Drone Fly is recorded against all the insects logged in Moscow (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.
