Azuridae are insectoid critters.
Azuridae are mutated and enlarged insects that resemble Rhinoceros beetles, instead of horns though, they have massive brains that they use to power their psionic abilities. Azuridae are so called due to the azure hue on their carapace. Their psionic powers have granted them nicknames such as psi beetle and psi bug by residents of the Underrail.
At lower levels (1-5) even a lone Azuridae can prove to be a strong adversary, and their powers multiply in groups via Psionic Synergy, to the extent of using new, more powerful abilities, such as being able to stun and chill the target. It's a good idea to try and separate them to weaken their power output first, before directly confronting them. The psionic capabilities of a single Azuridae are limited to Neural Overload.
Their tough carapaces provides some resistance against mechanical damage, but they expose a weak spot—their brains—whenever they use psionics.
When a player chooses to fight them it is recommended to use a close offensive, trying to force the Azuridae to fight with its pincers, as this form of attack is a lot weaker then their psionic powers.