Render

Renders are a species of insect native to Yanth. There are many forms of insects that vie for dominance across the planet, but the Render is the most feared. This beast dwarfs a tank and is covered in an impenetrable exoskeleton capable of deflecting even lascannon shots.

A Render has two rows of razor sharp claws that run along the bottom of its body, allowing it to move at great speeds. Its maw is packed with interlocking rows comprising of hundreds of teeth that enable it to burrow through the ground and process even hard rock through its mouth.

Renders are highly sensitive to vibrations and can lurk underground, rearing up instantly through the dirt and rocks to snatch a creature on the surface.

Source

 * Dark Heresy (2nd Edition): Enemies Without (RPG), pg. 98-99