Cochineal Beetle

The Cochineal Beetle is an enemy that spawns rarely in the Cavern biome. When killed, it will drop the Red Husk, which can be used to make Red Dye. They are immune to the Confused debuff.

Trivia

 * The Cochineal Beetle is an insect, native to South America and Mexico, which is used to create the red dye known as cochineal or carmine. It is mainly used in food and cosmetics. It is actually a scale insect, not a beetle.