Today this species is still widespread across Cambridgeshire and the rest of the UK. However, numbers may have dipped a little since Jenyns’ day, with the species now being slightly less common throughout gardens in the county. A parasitic fly has appeared in recent years, which probably spread from the continent along with a suite of other colonising species helped by climate change and accidental human importation. This caused a noticeable drop in numbers, but some resurgence has subsequently occurred thanks perhaps to natural selection for resistance.