Absolute hell of a mega nest. It's a massive and sprawling network of trenches and craters with walled off alcoves protecting 3 elite bug holes.
Name references the cave housing the brain bug near the end of Starship Troopers, which the characters refer to as 'Bug City'
Visually-
High walls in a circle, huge size, deep pit
On the Map-
Massive size on the map (you can't even get the entire radar signature with one ping), shape of alcoves
Hole count:13
Elite bug holes look like the holes found in Stalker Lairs and spawn either Alpha Commanders or Bile Spewers on Bile Spewer constellation maps.
It's pretty much divided into 3 sections. Two high alcoves guarding two elite bug holes, and a deep pit in the center protected by high walls.
https://youtu.be/vK_gIPUXPqk?t=223
I start at the section of the base farthest away from the elite bug holes since it has so no walls and is the least guarded. I throw a walking barrage angled to destroy most of the holes in the pit, and then a 380 to destroy a few more holes in the interior. I run around the walls of one of the alcoves and throw a 500 inside, before moving on to destroy one of the other alcoves. Lastly I move inside the base to destroy a few holes my barrages missed.