What insects live in trees?
Almost all groups of insects have at least some members that live in trees. It is estimated that there are many millions of types of insects, perhaps up to 30 million or more, and this estimate was made by studying the canopy of the tropical rainforest. Thus, the is that most types of insects live in trees. The largest group of tree-dwelling insects would undoubtably be beetles, which comprise the largest group of insects, and the largest group of animals, in the world.