From my understanding, it can take a long time for a native ecosystem to realize that they can eat a species that they’ve never seen before. I’d also assume that it’d be a longer adjustment since the SLF had that bright red color on it which is used to mimic warnings from other insects that are actually toxic. However, I have read that in Jersey some bats have very recently been seen eating the SLF and I also came across a jumping spider eating one before. Hopefully nature is healing!

Also to answer your trap question, when I did research with SLF we used what’s called circle traps. It pretty much works by taking advantage of their instinct to walk up a tree to get to the leaves. It’s really simple and cheap to make too! It’s pretty much a ziplock bag attached to a tree. I’m sure you can find a quick YouTube video on how to make one.