Anthophora retusa
In 3 days ~20% in a week ~30%
Anthophora retusa, the potter flower bee, is a species of solitary digger bee. A. retusa is generally found in Western Europe and southern Sweden. In the United Kingdom, A. retusa is thought to be limited to five sites, including Seaford Head Nature Reserve.
A. retusa can be differentiated from Anthophora plumipes by the hind-tibial spurs; in A. plumipes they are black while in A. retusa they are yellow or yellow-brown. A. retusa prefers sandy soils and is generally found on coastal dunes and cliffs as well as inland on commons and heathlands.
A. retusa has suffered population decline since the Second World War but undergone rapid decline since the 1990s, similar to that seen in some bumblebee species. It is an endangered species in Britain. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Stockholm | 🇸🇪 Sweden |
With luck
About 10% of wildlife watchers report a Potter Flower Bee sighting in Stockholm on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 94th most-seen of the 202 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
May
In that month about 20% of wildlife watchers report a Potter Flower Bee in Stockholm on a given day, against under 5% in June to March, the lowest months.
Only Stockholm, in our data
Stockholm is the only city on Wallace's Line with enough records to rate Potter Flower Bee sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Apidae
The closest relatives of the Potter Flower Bee that you can see in Stockholm (family Apidae, Honey Bees, Bumble Bees, and Allies) are Tree Bumble Bee (about 10%), Red-Tailed Bumble Bee (about 10%) and Common Carder Bumble Bee (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Potter Flower Bee is recorded against all the insects logged in Stockholm (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.
