Yellow-legged Tortoiseshells made it through the winter

Two years ago there was less than 100 records of Y-l Tortoiseshells from Finland, but the last two summers have seen spectacular invasions of this species to the country. Last summer an estimated tens of thousands reached the country from early July onwards. It winters as a full-grown butterfly and there was some concern how they would manage the Finnish winter, but luckily the winter was a mild one. This spring Yellow-legged Tortoiseshell was the first butterfly to appear after the winter in Hanko, and for some weeks it was also the most numerous until Brimstone and Camberwell Beauty took over. This individual was photographed on the 8th of April basking in a sunny spot, when the temperature in shade was a mere 6 degrees centigrade. Hopes are high that the species will become the next addition to the country's butterfly fauna.

Two years ago there was in all less than 100 records of Yellow-legged Tortoiseshell (Nymphalis xanthomelas) from Finland, but the last two summers have witnessed spectacular invasions of this species to the country. Last summer an influx of an estimated tens of thousands reached the country, from early July and onwards. The species winters as a full-grown butterfly and there was some concern how it would manage the Finnish winter, but luckily the winter was a mild one. This spring Yellow-legged Tortoiseshell was the first butterfly to appear after the winter in Hanko, and for some weeks it was also the most numerous until Brimstone and Camberwell Beauty took over. This individual was photographed on the 8th of April basking in a sunny spot, when the temperature in shade was a mere 6 degrees centigrade. Hopes are high that the species will become the next addition to the country's regular butterfly fauna.


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