Astonishing close-up of a beautiful European Common Blue (Polyommatus icarus) by user linejohnson from Quebec.
https://www.e-butterfly.org/ebapp/en/checklists/view/120032
Unfortunately, such a beautiful butterfly is an invasive species that has been displacing other native butterflies across its range.
You can read a scientific article analyzing this phenomenon using e-Butterfly data on our here: Anthropogenic disturbance promotes the abundance of a newly introduced butterfly, the European common blue (Polyommatus icarus; Lepidoptera: Lycaenidae), in Canada