[GuyF]

I spent quite a lot of time on the Dorset heaths last summer which allowed me to see lots of interesting insects but I think the rarest one I saw was a Large Marsh Grasshopper which I think is also a red data book species.
Other rare insects last year were Narrow-bordered Bee Hawkmoths, a Striped Hawkmoth (in the garden!) and Marsh Fritillaries.
Guy