Jenyns’ records show this to have been a rare (“found sparingly”) and localised species. Today it is much the same, with locations such as “Devil’s Ditch”, as mentioned by Jenyns, still being the best places to see them. However, there has been a recent expansion into new areas in the north of the county, including brownfield and mineral extraction sites, but also some well-established nature reserves where butterfly monitoring has been undertaken for many years. This expansion has likely come from Northamptonshire and Rutland rather than from the existing colonies in Cambridgeshire.