Clearing - Deep Stratum (Resident Evil Village - Shadows of Rose)

On the east side of the clearing. One is sucking the another's face off, and the third one will rise up when you get close.

On the ground on the west side of the clearing.

On the ground next to the stone water trough on the west side of the clearing.

Appear as you approach the giant Sclerotia on the north side of the clearing.

A giant variant of this is on the north side of the clearing, blocking you access to the Pit Entrance.