Tropical assassin bugs come in an amazing variety of forms. This one reminds me of a bee, though I didn’t see anything on my trip that might serve as a model. Despite extensive searching of the internet, I didn’t turn up any photos of a species resembling this individual.
A couple of my books do mention assassin bugs that mimic bees and wasps, so I think that’s probably what’s going on here.
A Photo Guide
by James L. Castner
by Charles L. Hogue