sentences:  Convergent evolution of many groups of insects led from original biting-chewing mouthparts to different, more specialised, derived function types.These include, for example, the proboscis of flower-visiting insects such as bees and flower beetles, or the biting-sucking mouthparts of blood-sucking insects such as fleas and mosquitos.Opposable thumbs allowing the grasping of objects are most often associated with primates, like humans, monkeys, apes, and lemurs.