From its first sighting in Dorset the Ivy bee (Colletes hederae) has spread to cover much of England south of a rough line from Nottingham to Norfolk, with scattered sightings in the north of England and just one verified record in Scotland thus far. There have also been verified sightings around most of coastal Wales, though the rugged Welsh hinterlands remain unconquered by this handsome little bee, as do large parts of inland Devon. Considering the first confirmed record of Colletes hederae in Britain came just 21 years ago, it’s an impressive colonisation effort. You can see the latest map on the NBN Atlas website here, and you can contribute to the BWARS mapping project here.