How did the Wraith Originate?

[garhkal]

What you have to remember is the wraith may have come from the iratus bug, but that was the result of iratus dna mixing with human dna. So they would have common lineage still left from the ancestors of the first humans to come in contact with the bugs.

And as that young one showed, younger wraith still eat proper food, till a certain age..

[Bhousden]

And as that young one showed, younger wraith still eat proper food, till a certain age..

That was what I was implying. They came from humans originally, so they can still eat real food. What makes me wonder if how do young iratus bugs eat?