They are bugs-like animals, living on the surface or ground of a planet. It's their native planet.
Under normal circumstances it is common to call that creatures like the planets name.
For example: If we would find animals (or life) on Mars we would call that life alltogether "Marsians" or "Marsian life-form"...
Or take Ganymede, they would be called Ganymedians.
So the question to the enemies name is the same question as to the planets name.
The problem is: We don't know the name of that planet.
If we would know it, we would know at the same time the "name of the enemy".
![Smile :)](./images/smilies/icon_e_smile.gif)
EDIT: So I suggest: As longs as we don't have a planet name we keep them as "natives".
viewtopic.php?f=6&t=1340 Call Biters/Creepers Natives