Haven’t seen this yet so I decided to make a walkthrough. Basically an Atlas Moth and Tarantula spawn. Pretty simple setup, thought it was cool! Just made a new channel so feel free to subscribe, I’ll be posting more tricks I find.
Ok so the reason why you don't see many tarantulas is because of water bugs but they only spawn in rivers. If you find a bamboo island, you should go after tarantulas and only go after moth when on islands with rivers. Although, Water bugs do sorta screw you over both ways.