A couple of examples of the varied bug life in Far North Queensland. The first is the nest of some Green Tree Ants getting agitated because some fool human is annoying them. They don't sting, but they have very sharp and powerful jaws which they tear your skin with before squirting formic acid into the wound. You wouldn't be too bothered by one, but accidentally disturb a nest and get a swarm of them all over you and you're in trouble.
The second is of course a mantid, ID unknown at this stage.