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Is this a Small Blue ? Dublin in Ireland (1 Viewer)

[Small Blue is dark. Holly Blue has distinctive pale powder blue under surfaces which you can easily see in flight (and here). Generally speaking, small blue is rare, restricted and holly blue is widespread, common. Its host plants are (the) holly and (the) ivy]
 
[Small Blue is dark. Holly Blue has distinctive pale powder blue under surfaces which you can easily see in flight (and here). Generally speaking, small blue is rare, restricted and holly blue is widespread, common. Its host plants are (the) holly and (the) ivy]
many thanks
 

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