Pygmy Blue
Brephidium exilis

The western pygmy blue is one of the smallest butterflies in the world and the smallest in North America. It has reached Hawaii, as well as the Persian Gulf, including Kuwait, eastern Saudi Arabia, Bahrain and the United Arab Emirates. Source
Where is the Pygmy Blue now?
In the last 8 weeks this insect was recorded 10 times across 3 areas (each area is a 5 degree square).
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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.