From Lotro-Wiki.com

Lore

The Midgewater Marshes are home to the Neeekerbreekers, a variety of annoying insect that has recently became hostile, following the passage of Black Riders from the East. You are called to halt the plague of Neekerbreekers.

Who would ever have thought that Neekerbreekers could grow that big?

Objective

Defeat 30 Neekerbreekers in Bree-land

Reward

Title: Shell-breaker