Insight into Small Pearl-bordered Fritillary (Boloria selene): still one of the most common fritillary butterflies found in the UK although its range has retracted greatly in recent years. It’s now restricted to the south and western side of the UK extending into the far north of Scotland.
The flight period is normally a single generation flying between May and July but in the warmer south a smaller second generation is common during August.
Closely resembling the far rarer Pearl-bordered Fritillary (Boloria euphrosyne) it is best identified by the dramatic white panelling on the underside of the wing, often referred to as ‘stained-glass windows’, compared to the more creamy underside of the Pearl-bordered Fritillary.
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