What order includes both moths and butterflies?

The order that includes both moths and butterflies is Lepidoptera. This order is characterized by having two pairs of wings that are covered in tiny scales, which is a distinctive feature that sets them apart from other insect orders. Moths and butterflies within Lepidoptera show significant variation in size, color, and behavior, but they share common characteristics such as a coiled proboscis for feeding and a complete metamorphosis life cycle that includes larval (caterpillar), pupal (chrysalis or cocoon), and adult stages. Lepidoptera is derived from the Greek words "lepido," meaning scale, and "ptera," meaning wings, emphasizing the scale-covered wings that are characteristic of this order. Understanding this classification helps in identifying various species and their ecological roles.