I haven't finished my thoughts on it but if you remember the giant ribcage in the chamber of night by Crotas crystal scanning it reveals they dug the tunnels in the moon for the hive but there is also this grimoire.
http://www.ishtar-collective.net/cards/ghost-fragment-the-ocean-of-storms-2
This leads me to further conclude for now the ahamkara are either enslaved or a morphologically directed worm. Similar to the tyrannids of warhammer 40K or Zerg of Starcraft. Even the locust in gears of war. The hive themselves certainly change drastically and can direct their own shape. So like my previous post the arhamkara aren't the worm gods but they could still be worms. Specifically from the "scales and teeth" line
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Edited by IamMythHunter: 6/12/2016 8:00:17 PMThe line about scales certainly is interesting. I disagree with your conclusion, but I think that is a significant piece of evidence in your favor.