Woodland Trust

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Holly blue. Roy Battellholly blue

celastrina argiolus

  • Shining, sky blue upperside wings with fine borders
     
  • The female has heavy dark borders to its forewings
     

Where found

Bushy, wooded habitat, often in woodland clearings and margins where its larvae feed on many plants, eg holly, bramble, gorse and ivy.

Common in Southern England, Wales and parts of Northern Ireland.
 

When to look for

Usually end of April / June