If you are working on your Master Runes, then you are a fool.
With that in mind, I went to Unrest looking for Giant Fire Beetle Eyes for my Master Runes (Beza).
I was disappointed to find zero eyes, culled from about...oh twenty beetles.
Even the name "Death Beetle" is a misnomer, seeing how the 'Beetles' only drop Scarab Parts (e.g. carapace, legs, egg sack, etc).
Of course they may drop Giant Fire Beetle Eyes, but more than likely their loot tables were mixed up seeing how they are fairly similar.
Remember to drink heavily before you research; you can glean more pain that way.