Prismatic Lacewing

The Prismatic Lacewing is a rare flying Critter that resembles a butterfly and spawns in the Surface Hallow from dusk until midnight after Plantera has been defeated. Killing it summons the Empress of Light boss.

The Prismatic Lacewing can be caught with a Bug Net, and be used to craft a Prismatic Lacewing Jar. Releasing it from the inventory and then killing it will still summon the Empress of Light if done in the Hallow as otherwise it will immediately despawn. Only one Lacewing can be naturally spawned at a time and does not respawn in the same night. The Prismatic Lacewing can only spawn between the times 7:30 PM - 12:00 AM

It is one of the few enemies that can be detected by the Lifeform Analyzer.

It is insanely rare to find in the current patch even with the x10 spawn rate of journey mode. It could take many, many nights for one to appear. Contrary to popular rumours, it does NOT require high winds to spawn. Wind does not seem to affect rarity and/or spawn rates at all.

Tips

 * Keep the Guide to Critter Companionship with you so you may farm the Hallow without having to worry about you or a minion/summon accidentally killing it.