I believe these are Florida Predatory Stink Bug nymphs. I don’t know if they killed this cicada or found it already dead. Either way, their late-night feast created an eerie scene on the fence.
I am an amateur at identifying “true bugs”. Please comment to correct or confirm this ID!
Rae Spencer 
You are correct, these are the florida predatory stink bugs! what a sight you were able to catch. very well done on the photo!
Yay! I’m happy to know that I got this one right! Thank you!
Wish I could help but if it’s any consolation, these bugs are pretty. However, I dislike bugs! Have seen more this summer than ever in a lifetime!
It seems that the weather has been perfect for bugs this year. The only ones I really object to are the black widow spiders and the mosquitoes…