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Reddish Vale Country Park

The Small Tortoiseshell (Aglais urticae) is a well-known colourful butterfly.

 

One of the commoner garden butterflies throughout the UK, the small tortoiseshell is bright orange and black with a row of blue crescents around the wing edges. Underneath, they are camouflaged dark grey and brown. Adults emerge from hibernation on the first warm spring days and look for mates.

 

Females usually lay their eggs on tender, young stinging nettles in batches of 60 to 100. Caterpillars hatch after about 10 days and spin a dense web over the plant’s growing tip. The caterpillars live communally for most of their lives, dispersing to pupate. Adults often hibernate in houses, outbuildings and sheds.

 

Caterpillars are bristly and black with two discontinuous yellow lines along their sides. Their bright colours warn predators that they are poisononous.

 

The butterfly is abundant in most areas of the United Kingdom and Ireland. However numbers often vary yearly. Its commonness may often depend on the status of the common wasp in that particular season, since the wasp is known to feed on the Tortoiseshell's pupae.

 

Small Tortoiseshell Butterfly

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Reddish Vale Country Park

Small Tortoieshell

Butterfly