I'm planning a trip to Dorset this weekend and am hoping some lovely people on here will be able to offer me guidance on sites for the following species - 

White Legged Damselfly, Scare Blue Tailed Damselfly, Southern Damselfly, Scarce Chaser, Downy Emerald

I'm aware that we will be hitting it a bit early for some, if not all, of those species but I'm ever hopeful. Any information would be hugely appreciated and I would be willing to compensate with chocolate or sweets of your choosing (up to a market value of £1.50). 

Any info on sites for brilliant emerald or any other interesting dorset species would also also earn a sugary reward and my eternal gratitude.