Cheilosia fasciata
In 3 days ~10% in a week ~20%
Cheilosia fasciata is a European species of hoverfly. Like most Cheilosia it is mostly black, Cheilosia semifasciata (Becker, 1894) is often misidentified as Cheilosia fasciata. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vienna | 🇦🇹 Austria |
Rare
Under 5% of wildlife watchers report a Garlic Blacklet sighting in Vienna on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 760th most-seen of the 1406 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.
April
In that month about 10% of wildlife watchers report a Garlic Blacklet in Vienna on a given day, against under 5% in May to March, the lowest months.
Only Vienna, in our data
Vienna is the only city on Wallace's Line with enough records to rate Garlic Blacklet sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Syrphidae
The closest relatives of the Garlic Blacklet that you can see in Vienna (family Syrphidae, Hover Flies) are Marmalade Hover Fly (about 20%), Hornet Mimic Hover Fly (about 10%) and Common Drone Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Garlic Blacklet is recorded against all the insects logged in Vienna (13 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.
