i didn't think of it before but those glowing bugs are like the Ancient drone weapon. they're yellow, make a high pitch humming sound and can pass through anything.
is it possible that this is where the Ancients got the idea to create the drone weapon? they probably saw and studied this things millions of yrs ago (while in the MW Galaxy) and determined that certain energy can pass through anything. like in SG-1 s7 finale Lost City pt. 2 when they passed through Anubis' shields and ships easily. or Atlantis s3 ep No Man's Land when they detroyed a Wraith Hive Ship. or s4 ep Harmony when they (minidrones) went through the Genii.
it's just a thought.