‘White Holes’ are our term for kilometre squares where no butterflies have been reported in the current five-year recording cycle – of which 2019 is the last year.You can see more up to date information on each kilometre square in the county on our interactive map but one or two people have been asking for a list, so click here: White Holes to end of 2018 for a pdf version. This list covers 2015 – 2018; some 2019 information is also shown on the interactive map. If you would like the list in an Excel spreadsheet, please contact us via our online Contact Form.
Please remember that we want to record as many species in every square as possible, so although our top priority is filling white holes, the interactive map also shows squares where less species have been recorded: the pink squares as opposed to the better-recorded red squares. Common species are every bit as important as rare ones, so do your best to identify those Whites!
Do remember not to trespass on private land and to be careful surveying roadside verges. White hole filling can take you into parts of Dorset you haven’t seen before, and there are some lovely areas in this county.
You can send in your sightings via our online Recording Form.
Thank you for your help: your records will help us to assess the fortunes of butterflies in Dorset and do what we can to help them.