Twin-spot fritillary

Brenthis hecate is a large fritillary with a wingspan reaching 35–45 millimetres (1.4–1.8 in) and bright orange uppersides of the wings. The underside of the hindwings shows a double parallel line of brown spots (hence the common name). The flight period extends from May to early August. The larva feeds on Filipendula ulmaria and Dorycnium.

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  Dorsal
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  Ventral
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  Brenthis hecate caucasica in Seitz

Brenthis hecate is found in south-western Europe, southern Russia, the Balkans, Asia Minor, Iran and Central Asia.

This species is typical of dry flowery meadows with light scrub and woodland margins, at an elevation of 25–1,500 metres (82–4,921 ft) above sea level.

• Leps It
• "Brenthis Hübner, [1819]" at Markku Savela's Lepidoptera and Some Other Life Forms
• Moths and Butterflies of Europe and North Africa
• Butterfly Guide