Somerset is one of only a few locations in the UK where the Large Blue can be seen.

Some of the butterflies in this group are actually brown rather than blue, such as the Brown Argus and the females in some of the species.

The blues include six species regularly seen in our area. A seventh, the Adonis Blue, is rare in Somerset.


Below you will find links to the individual species pages on the Butterfly Conservation website. We will in the future be adding additional pages with local information for each species - so please return sometime.

Holly Blue

Distribution: Widespread, Common

Flight period: March to October

Common Blue

Distribution:  Widespread, Common

Flight period: May to October

Brown Argus

Distribution: Localised, Uncommon

Flight period: May to September

Large Blue

Distribution: Very localised, Rare

Flight period: Mid June to mid July

Small Blue

Distribution: Very localised, Uncommon

Flight period:  Late May and June 

Chalkhill Blue

Distribution: Very localised, Uncommon

Flight period:  Mid July to early September

Adonis Blue

Distribution: Very localised, Very rare

Flight period:  Late May/June & mid August/Sept

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