Osmia spinulosa
In 3 days ~10% in a week ~20%
Osmia spinulosa, also known as the spined mason bee, is a species of bee in the genus Osmia. 7–8 mm. Males: Tergite 15 with terminal ligaments, Tergite 7 with a thorn. To be recognized in the field with experience. Females: Tergites 1-6 with terminal ligaments. Scutellum laterally with a pointed thorn each. Tibial spur red.
Osmia spinulosa is distributed from the Spanish foothills of the Pyrenees (Girona) across Europe, Asia Minor, Caucasus and western Central Asia to the Central Siberian mountains (Tomsk, Kemerovo, Altai Republic); north to South Wales and Central England, in Scandinavia to 60°N in Norway and Sweden, in Russia to Kirov and Perm; south to Sicily and southern Bulgaria. It has been detected from all federal states in Germany with the exception of Schleswig-Holstein. It is widespread in Germany, but only sporadically in the North German lowlands. Moderately frequent, especially in the hill country and in the limestone low mountain ranges. It has been found in the Alps up to 2000 m. It has been reported in every state in Austria. It has been recorded in the Swiss cantons of Geneva, Neuchâtel, Bern, Basel, Schaffhausen, Valais, Graubünden and... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Spined Mason Bee sighting in London on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 1109th most-seen of the 1504 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 Spined Mason Bee in London on a given day, so our monthly data shows no clear season.
Only London, in our data
London is the only city on Wallace's Line with enough records to rate Spined Mason Bee sightings: under 5% of wildlife watchers there report one on a given day.
Same genus: Osmia
The closest relatives of the Spined Mason Bee that you can see in London (genus Osmia, Mason Bees) are Red Mason Bee (about 10%), European Orchard Bee (about 10%) and Blue Mason Bee (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spined Mason Bee is recorded against all the insects logged in London (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.
