I remember that the first introduction of the Insect Spirits (The Universal Brotherhood) creeped out my players in a way no other game ever had, with the exception of Call of Cthulhu(tm).
Spider shamans might not be your friends; but if you can assist them against a hive, they might be willing to help. (Spiders are not insects, although they're not always friendly in the mythology.)
And it makes for a better story for Ares to think they can control their experimentation, and even have some successes against the bugs...right before it all falls apart.