Blue with partial black bars

[neil]

Photographed this Blue on the border of Beds and Northants. It has partial black bars on the white border. Doesn't seem to be an Adonis nor Common Blue. Is it a hybrid, or something else?

Neil

[Padfield]

It is a common blue. The species does sometimes show half-chequering, though rarely as prominent as this.

Adonis blue has full chequering, often (on the forewing) actually being stronger in the outer half of the white fringe.

Guy

[millerd]

Here's one from Totternhoe (Beds) earlier this year. Only Common (and Small) Blues in those parts..

Dave