Pachygaster atra
In 3 days ~10% in a week ~20%
Pachygaster atra, the dark-winged black, is a European species of soldier fly. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Dark-Winged Black sighting in Vienna on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 838th 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.
June
In that month about 10% of wildlife watchers report a Dark-Winged Black in Vienna on a given day, against under 5% in July to May, the lowest months. That is one of Vienna's wettest months, with about 90 mm of rain against 40 mm in February.
Among the best
Of the 5 cities where we can rate Dark-Winged Black sightings, Vienna ranks 5th at under 5%, level with the leaders once rounded. The best odds are in London (United Kingdom, under 5%), Warsaw (Poland, under 5%) and Kyiv (Ukraine, under 5%).
Same family: Stratiomyidae
The closest relatives of the Dark-Winged Black that you can see in Vienna (family Stratiomyidae, Soldier Flies) are Broad Centurion Fly (about 10%) and Actina chalybea (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dark-Winged Black is recorded against all the insects logged in Vienna (11 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.
