Small Tortoiseshell

The Small Tortoiseshell is a well-known nymphalid butterfly found across Europe and temperate Asia, closely related to the Peacock Butterfly and sharing the same larval host plant, stinging nettle. Its bright, warm coloration and bold pattern have made it one of the most familiar and frequently recorded butterflies in gardens and countryside throughout its range.

Like its relative the Peacock, the Small Tortoiseshell overwinters as an adult, tucking into sheltered crevices, sheds, or buildings during the cold months and re-emerging on mild days, sometimes even indoors during warm spells in winter. This makes it one of the earliest butterflies typically seen each spring.

Despite periodic population fluctuations linked to parasites and weather, it remains one of the most widely distributed and easily recognized butterflies across its Eurasian range.

• Bright orange-red wings marked with bold black and yellow blocks near the forewing tip and black spots along the wing.
• A border of small blue crescent-shaped spots runs along the outer margin of both wings.
• Wing edges are scalloped, giving a slightly notched outline typical of the genus.
• Underside is dark brown to blackish, camouflaging the butterfly when at rest with wings closed.
• Distinguished from the Peacock Butterfly by its smaller size, brighter orange base color, and lack of large true eyespots.

Widely distributed across Europe and temperate Asia, occurring in gardens, meadows, hedgerows, woodland edges, and urban parks wherever nettles grow. Adults are active from early spring through autumn, with hibernating adults sometimes seen on warm winter days in sheltered locations such as garages, sheds, and window frames.

Adults are frequent visitors to garden flowers, especially buddleia, asters, and other nectar-rich blooms, and are often seen basking with wings open in sunny spots. When disturbed while at rest, they may flick their wings open to reveal the bright upper pattern as a startle response. Caterpillars feed gregariously in silk webs spun over nettle foliage before dispersing to pupate individually, and the species is an important nectar pollinator in gardens across its range.

Eggs are laid in large batches on the undersides of nettle leaves. Caterpillars are black with yellow stripes and branching spines, feeding communally in silked nettle tops during early instars. There are typically two or more generations per year in much of the range, and adults of the final brood overwinter in sheltered locations, emerging again in early spring to mate and lay eggs.