Painted lady, or in North America as the cosmopolitan.

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The millions of black-and-orange butterflies that have carpeted flower beds across the Montreal area in recent days are waiting for winds to carry them south to warmer weather, according to an expert at the Montreal Insectarium. 

This picture was taken in Morin-Heights, in the Laurentians, north of Montreal.

Sony ILCE-7RM2
FE 90mm F2.8 Macro G OSS
1/400 sec; f/10, ISO 800