Osmia aurulenta
In 3 days ~10% in a week ~20%
Osmia aurulenta is a Palearctic species of mason bee. 8–10 mm. Males in the field cannot be distinguished from similar Osmia species, especially when they are older. Females in a fresh state may be confused with the slimmer Osmia rufohirta due to the bright rust-red hairs of the thorax, the rust-red narrow tergite bandages and the rust-red belly brush. Females that are old are similar to Osmia tridentata.
From Portugal through Europe and Asia Minor to the Caucasus; north to Ireland and southern Scotland, to 59.5° N in Norway, 58° N in Sweden, in Russia to Udmurtia; south to Sicily, Greece and Lebanon. On calcareous subsoil. Inland dunes, rocky slopes, extensively grazed or fallow sheep pastures (juniper heaths), old fallow vineyards, structurally rich forest edges, abandoned quarries, in the limestone low mountain ranges also stony and sparsely overgrown road embankments, there occasionally also in the settlement area. From the lowlands to the montane, in southern Switzerland to the subalpine altitude.
The flight period ranges in a generation from March to July, beginning of March to the beginning of September in Switzerland... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Gold-Fringed Mason Bee sighting in Vienna on a given day, based on 5 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 Gold-Fringed Mason Bee in Vienna on a given day, so our monthly data shows no clear season.
Among the best
Of the 3 cities where we can rate Gold-Fringed Mason Bee sightings, Vienna ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Warsaw (Poland, under 5%) and Berlin (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Gold-Fringed Mason Bee is recorded against all the insects logged in Vienna (5 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.
