Dorset butterflies in the coppers and hairstreaks family include:

Butterfly on a leaf showing orange underside with darker, white-edged, streak and some of the brown and orange upperwing

Brown Hairstreak

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A green butterfly with a small line of white streaks on the underside of its hindwing

Green Hairstreak

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Dark butterfly with bright purple patches on its forewings

Purple Hairstreak

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Orange butterfly with a lot of dark spots and darker hind wings.

Small Copper

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Side view of a butterfly with brown underwings which have a zig-zag white line and orange markings on the edge.

White-letter Hairstreak

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Notes

This website only covers butterflies found in Dorset. The Small Copper is the only copper found in the UK. There is one other hairstreak found elsewhere in the UK: the Black Hairstreak.