The Common Blue

Male common blues have violet-blue upper wings with grey-beige undersides. However, females vary from those with predominantly brown upper wings and orange crescents, usually more common in the south, to those with more blue, found farther north and west.

This butterfly is common throughout the UK. There are often two broods, with eggs laid in June, then August and September. Common blue caterpillars hibernate and pupate in April and May giving rise to adults in May and June.