Boloria titania (syn: Clossiana titania) (NL: Titania's parelmoervlinder / EN: Titania's Fritillary, Purple Bog Fritillary/ DE: Natterwurz-Perlmuttfalter / FR: Nacré porphyrin) is a butterfly of the Nymphalidae family. The species flies from June to August depending on the location. The length of the forewings is 21-23 mm and so a mid-sized Fritillary. A detail of the rear wing, especially at the bottom, is very characteristic: the typical black crescents on the outer edge of the wings are triangular (arrowy) in shape. Boloria titania is now mainly found in the Alps and in the mountains of the Balkans and the Baltics. The cold-loving species is on the common bistort (Polygonum bistorta) as their food plant, and thus reacting very sensitively to changes. A "drifting apart" of the butterfly habitat and food plant by climate change would endanger the species in the future. These cold-loving species may be among the losers of climate change.
Image: Maloja (CH) - 18/07/2011
© Johan Dierckx
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