Do you know the difference between a bug and an insect? In this video, Maynard Okereke explains the key takeaways: bugs are a type of insect that are part of the order Hemiptera. This means that bugs have a non-retractable piercing mouthpart that can be used to suck juices from plants and animals, and that they undergo an incomplete metamorphosis, hatching as nymphs and transforming directly into adults. The order Hemiptera, also called true bugs, consists of over 75,000 species! Some common species of true bugs include cicadas, water bugs, and aphids.