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Small Tortoiseshell butterfly

Small Tortoiseshell ©Scott Petrek

Small tortoiseshell

The pretty small tortoiseshell is a familiar garden visitor that can be seen feeding on flowers all year-round during warm spells. Overwintering adults may find resting spots in sheds, garages or even houses.

Scientific name

Aglais urticae

When to see

January to December

Species information

Statistics

Wingspan: 4.5-6.2cm
Common.

About

The small tortoiseshell is a medium-sized, pretty butterfly that is common in gardens where it feeds on buddleia and other flowers. It is on the wing throughout the year, having two or three broods and overwintering as an adult. The caterpillars feed on common nettle.
Male small tortoiseshells are very territorial, chasing each other, other butterflies and anything else that appears in their space. They court females by 'drumming' their antennae on the females' hindwings.

How to identify

The small tortoiseshell is mainly reddish-orange in colour, with black and yellow markings on the forewings and a ring of blue spots around the edge of the wings. The similar painted lady is also orange with black spots, but lacks the yellow and blue markings.

Distribution

Widespread.

Did you know?

The similar-looking large tortoiseshell was a common butterfly in Victorian times, but is now considered to be extinct in the UK. Sightings are usually migrants or escapees from captivity. It is thought that a range of factors caused its decline, including parasitism, climate change and Dutch Elm Disease which devastated its main foodplant.