You can use them to fart on your crops to help them grow.

These are the friggin cutest thing ever (in my opinion) to tame and make little chirrup sounds so I would recommend just getting an army of them and putting them inside your personal base (not for Dinos) on a PVE or single player and just chill, very stress relieving to just have a bunch of cuddly moths around you for me. Helps me at least when stressed on ark, not being stressed helps a lot. Pretty random but idk

On a pvp server the lymantria can be used as a bio weapon, as its toxic attack has a chance to give players and dodos swamp fever.

Lol wild lymantria use stun spore. Player attack speed has fallen.

Don't listen to the tips that say you can steal Wyvern eggs with this thing...

Well you can, but you will die while trying to get away. A Wyvern is waaaaay faster than a moth

You can use this big ass moth as a lift truck inside your base since it can fit through double doors and is very easy to manoeuvre in closed spaces, unlike the Ptera. You can easily move thousands of metal ingots from and Industrial Forge to a Fabri, or loads of stone from a Doed to a Chen bench, etc etc. Its starting weight is quite shitty but you can allocate every single level on it since it’s the only thing you need. This role works particularly well on unofficial servers in where the weight stat is boosted.

Since TLC 3 , this creature is breedable. You cannot pick up it's fertilized eggs , so make sure you have a proper breeding area.

With teamwork, it can be used to help tame other animals. One team member on Lymantria, the other ones shooting tranq. The slow effect is 90%, therefore, plenty to slow down any creature enough for a person to type it while shooting tranq shots.

Put a green glow stick on it and fly around as a giant glowbug.