Plantera
29 Achievements
6-8h
Steam
Entomologist
Collect 500 butterflies
28.9%
How to unlock the Entomologist achievement in Plantera - Definitive Guide
Butterflies appear right from the start of the game. In order to collect them use the on the butterfly when it appears on screen. You will need to wait for the Butterfly to have a circular glow around them before you can collect them. For every Butterfly collected you receive coins.