When a beholder suffers nightmares of mites and insects that sting and nip at it incessantly...
Beeholder: all its eye rays are just replaced with projectile bee swarm attacks, and it looks more like a hovering bee hive. Its central eye cone is a honey field that slows targets in it and gives them disadvantage on dexterity checks - which are the check needed to shake off the bee swarms.
I love the lore surrounding eye tyrants - it invites you to make whatever beholder variant you can imagine, no matter how ridiculous or silly, and still fit entirely within the established lore for how beholder variants come to be.