Simon Colmer / Holly blue (Celastrina argiolus) Sussex, UK. June.
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David Kjaer / Holly blue butterfly (Celastrina argiolus) on brambles, Dorset, UK, August.
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Jussi Murtosaari / Holly blue butterfly (Celastrina argiolus) female (second generation) laying eggs on heather, Leivonmaki National Park, Leivonmaki, Joutsa, Keski-Suomi, Lansi- ja Sisa-Suomi / Central and Western Fin...
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Rod Williams / Male Holly blue butterfly (Celastrina argiolus) Hutchinson's Bank, New Addington, South London, England, UK, May
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Rod Williams / Male Holly Blue (Celastrina argiolus) Hutchinson's Bank, New Addington, South London, England, UK, May
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Bernard Castelein / Holly blue (Celastrina argiolus) Brasschaat, Belgium, July.
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Bernard Castelein / Holly blue (Celastrina argiolus) Brasschaat, Belgium, July.
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Bernard Castelein / Holly blue (Celastrina argiolus) resting on leaf, Brasschaat, Belgium, June.
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Rod Williams / Holly blue butterfly (Celastrina argiolus) feeding on ragwort, Lewisham, London, UK, August.
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Jussi Murtosaari / Holly Blue butterfly (Celastrina argiolus) female laying eggs on rowan tree, central Finland, May.
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Andy Sands / Holly Blue butterfly (Celastrina argiollus) On ivy leaf (Hedera sp) with wings open, Hertfordshire, England, UK, May
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Bernard Castelein / Holly Blue Butterfly (Celastrina argiolus). Belgium, April.
