- Family: Nymphalidae
- Scientific name: Nymphalis polychloros
- English common name: Large Tortoiseshell
- Spanish common name: Olmera, Mariposa de los olmos
The Large Tortoiseshell – Nymphalis polychloros – Olmera is a large and attractive butterfly that often sunbathes on tree trunks or rocks with its wings open. The adults hibernate through the winter but can be seen flying on warmer days.

The main upperwing colour is an orangey red with large black marks towards the front edge and blue half moons around the hind edge. The under wings have a very dark, mottled brown pattern with a roughly shaped edge.
The caterpillars of this species grow to 4.5cm in length, they are mainly black with orange spots and a broken orange line running above the legs, the spiky looking hairs are a paler orange / tan colour.
- Wing size: 50-63mm
- Altitude: Sea level to 1700m
- Flight time: Winter and Spring in hotter areas, Summer in cooler areas, in several generations.
- Over-wintering: Hibernating butterfly
- Caterpillar food plant: Poplar, Willow, Elm
- Distribution: Most of Europe, North Africa

Similar species: Comma (Nymphalis c-album) which has a very ragged edge.
Butterflies of Iberia. These are included in the list of butterflies in Andalusia. Images taken in Andalucia, Southern Spain.
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I’ve been living in western Andalucía for more than 20 years and spend much of my time researching and running English-language travel websites about Spain. My work covers destinations including Cádiz, Ronda, Grazalema and the Caminito del Rey, as well as Wildside Holidays, which focuses on walking, wildlife and nature travel in Spain.
Through Wildside Holidays, I share practical information about Spain’s natural parks, mountains, wildlife and walking destinations, drawing on many years of living and travelling in the country. The aim is to help visitors discover Spain’s natural landscapes responsibly and plan rewarding walking and wildlife experiences.