Leucorrhinia albifrons
In 3 days ~10% in a week ~20%
Leucorrhinia albifrons, the dark whiteface, is a species of dragonfly in the family Libellulidae. It is found in Austria, Belarus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Kazakhstan, Latvia, Lithuania, the Netherlands, Norway, Poland, Russia, Slovakia, Sweden, Switzerland, and Ukraine. Its natural habitats are shrub-dominated wetlands, swamps, intermittent freshwater lakes, and freshwater marshes. It is threatened by habitat loss.
The dark whiteface was described as Libellula caudalis by the German entomologist Hermann Burmeister in 1839. It is known in English as the dark whiteface or the eastern white-faced darter. It is a medium-sized Leucorrhinia dragonfly with a dark, dull appearance. The males appear frosted bluish-grey. It can be distinguished from other species in its genus by the white patches on its labium. It is smaller and sleeker than the lilypad whiteface, with a shorter and more diffuse ring at the base of the abdomen.
The dark whiteface is a palearctic species with a range that stretches from central Siberia and the Altai Mountains to southern Scandinavia and France. It is fairly... Wikipedia →
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Dark Whiteface sighting in Vienna on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 1286th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Dark Whiteface in Vienna on a given day, so our monthly data shows no clear season.
Among the best
Of the 2 cities where we can rate Dark Whiteface sightings, Vienna ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Moscow (Russia, under 5%).
GBIF citizen-science records
It is estimated from how often the Dark Whiteface is recorded against all the insects logged in Vienna (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.
