Common Blue Flutterfly
From Everafter Falls Wiki
Common Blue Flutterfly is a tiny flutterfly critter that can be caught in the wild or hatched in a Critter Terrarium from a Small Cocoon or a Small Caterpillar.
Common Blue Flutterfly can be donated to the Museum as part of its Common Critters collection, placed into a terrarium together with another tiny flutterfly to produce Small Cocoons, or sold.