Buffy the Vampire Slayer Classic #33. Hive Mentality

Giles' new girlfriend is still missing and possibly in the clutches of the bugmen. Willow and Tara come across a possible solution to Sunnydale's insect problem in a dusty volume called Demonic Entomology. Giles, worried that he's about to lose another lover to Sunnydale's prolific obituary page, isn't able to conjure up the requisite magical pesticide, leaving Buffy to face the hive on her own!