Hercules Beetle

The Hercules Beetle is a Hardmode, post-Plantera accessory that increases the damage of summon weapons by 15% and increases their knockback by 2. It is sold by the Witch Doctor for if he is spoken to in the underground Jungle,  and while the Pygmy Staff is in the player's inventory.

Trivia

 * The is a real-life insect. It is the largest species of rhinoceros beetle.
 * As the item grants 15% increased summon damage and increased summon knockback, it can be considered an upgrade to the Summoner Emblem.