Assassin Bug

Assassin Bug
Assassin bugs plague the frontier and the wilderness, where they seek to hatch their voracious maggots within incapacitated hosts. Resembling giant bluebottle flies, these insectile terrors bear stunted humanoid limbs hinting at the bizarre ceremonies that created them.
Dangerous Cultivation
While the exact origins of the assassin bug are uncertain, rumors speak of an ancient sect of druids (possibly in service to Malar or Talos) who cultivated the first of these creatures. However, it remains unknown whether their intent was to create a benign means of breaking down monstrous corpses or a more insidious means of ridding the wilderness of growing humanoid populations. Little information survives regarding this sect, but the assassin bugs' unsettling humanoid-like limbs and limited language ability suggests that the druids might have engaged in self-sacrifice to achieve their creation.
Horrific Egg Layers
An assassin bug attacks with a paralytic bite to first incapacitate its prey, making it easy to infect that paralyzed victim with eggs. However, they are able to infest any target as needed, and will do so to eliminate threats. Given their need to lay eggs in a living host, assassin bugs generally flee from constructs and undead. Once deposited within a living host, assassin bug eggs immediately hatch into assassin bug maggots that burrow toward their victim's heart, consuming it and killing the host unless they are quickly destroyed. After gorging themselves on the host's body over several days, the maggots emerge as juvenile assassin bugs, ready to continue their horrid life cycle.
An Unnatural Plague
Whole settlements along the frontier have been wiped out by plagues of assassin bugs. Without a quickly organized defense, even a single bug can infest and overwhelm an unprepared population. Desperate rulers discovering that settlements are at risk often order entire neighborhoods or whole villages burned at the first sign of infestation. Within infested areas, guards patrol with burning brands and flaming swords, ready to set suspect dwellings ablaze. Fire is an effective destroyer of assassin bug maggots, and wild creatures observed running headfirst into wildfires often reveal an infestation of assassin bugs, as they immolate themselves in an instinctive effort to rid themselves of this scourge.
Monstrous Interactions
Few creatures are able to survive an assassin bug's infestation without immediately being treated with magic or fire. Incredibly hardy monsters such as catoblepas and gorgons have sometimes been observed with deep pockmarks showing where juvenile assassin bugs have emerged from their bodies. Vile creatures such as hags sometimes cultivate assassin bugs to use their maggots in horrid recipes. And trolls have been known to intentionally allow assassin bugs to infest their bodies, which heal against the wounds of a maggot infestation and allow those maggots to be pulled out and consumed.