What is the scientific order that includes beetles?

The scientific order that includes beetles is Coleoptera. This order is characterized by the presence of hard forewings, known as elytra, which cover the hind wings and protect the body. Coleoptera is the largest order in the animal kingdom, containing a vast diversity of species that can be found in a variety of environments. The distinguishing features of beetles, such as their biting mouthparts and complete metamorphosis life cycle, contribute to their success and adaptability.

The other options represent different orders of insects: Diptera includes flies and mosquitoes, which have two wings and undergo a different type of development; Hymenoptera encompasses ants, bees, and wasps, known for their social structures and unique reproductive strategies; and Ephemeroptera consists of mayflies, which are notable for their delicate bodies and short adult lifespan. Each of these orders displays specific characteristics that set them apart from Coleoptera, further emphasizing the distinctiveness of beetles within the insect world.