Prismatic Lacewing

The Prismatic Lacewing is a rare flying critter that spawns in the surface Hallow from dusk until midnight after Plantera has been defeated. When killed by a player, it summons the Empress of Light; death from non-player sources other than Fallen Stars will not result in summoning.

The Prismatic Lacewing can be caught with a Bug Net. Releasing it from the inventory (with ) and killing it will still summon the Empress of Light (though it will quickly disappear if released outside of the Hallow). Only one Lacewing can be naturally spawned at a time. Because it can only spawn between dusk and midnight, its spawn is limited to between the times of 7:30PM and 12:00AM. It can also be used to craft a Prismatic Lacewing Jar.

Tips

 * Using a Bug Net, it can be kept in the player's inventory to later release it at a more appropriate time, such as to fight the Empress of Light when better prepared.
 * The Guide To Critter Companionship can be helpful to prevent accidentally summoning the Empress of Light.
 * A Lifeform Analyzer can be used to see if a Lacewing is nearby.
 * Using a Battle Potion and Water Candle increases its spawn rate, like other monsters.
 * Similarly, because it is considered an enemy, its spawn rate is increased during the Blood Moon event and can be easily farmed using a Bloody Tear.
 * Building a platform roughly 35 tiles above a Hallow biome while under the influence of a Water Candle, the player can expect 3-8 Lacewings to spawn, provided they are there from 7:30PM to 12:00AM.
 * If the player does not have a surface Hallowed biome in their world, a Clentaminator with Blue Solution can be used to create one.

History
Chrysope prismatique 七彩草蛉