The largest of the UK banded Colletes species. The forewing of the female measures 9.5-10mm, the male 8-8.5mm. The broad buff-coloured bands and orange thorax of a freshly emerged female are distinctive, though care needs to be taken with males or faded specimens.

The Ivy Bee nests in loose soil, favouring sparsely vegetated south-facing banks. Nesting aggregations can be huge in suitable locations with thousands of nests. Pollen is collected almost exclusively from Ivy which must be available near to the nest sites.

This species has a single flight period from early September to the start of November. The males emerge first.

This species was only described as new to science in 1993 and first recorded in the UK in 2001. It is now widespread along most of the south coast, south Wales and East Anglia, and extending its range steadily northwards.

This species was first found in VC55 on 03 Oct 2017 and has expanded its range considerably since then.