It doesn't make much sense that the Shadow Bugs have the responsibility to protect the colony, since they have a thinner exoskeleton and are weaker than the Nymphs. Perhaps there are Soldier Bugs as well, stronger and with thicker exoskeleton and perhaps having also psy attacks.
The problem with the Soldier Bugs theory is that we didn't saw any of them in TRPG2... perhaps we went too quickly through the tunnels and managed to skip the soldiers.
The problem with the Soldier Bugs theory is that we didn't saw any of them in TRPG2... perhaps we went too quickly through the tunnels and managed to skip the soldiers.