Vindar

The Vindar were a species of white insectoids with four arms and a tough carapace. They possessed large black beady eyes, and they were able to fire powerful purple energy blasts from their hand. Long after the death of Luke Skywalker, they oppressed a species they referred to derogatorily as the Squidge. The Vindar considered all things not of themselves to be inconsequential, and worked to destroy the culture and heritage of those they oppressed.

They were also responsible for the "death" of C-3PO after they blasted his remaining parts to oblivion.

Text and facts from the “Vindar” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.