Lepidopterans are insects that belong to the order Lepidoptera, which includes butterflies and moths. They are characterized by their large, often colorful wings covered in tiny scales. These insects undergo a complete metamorphosis, transitioning from egg to larva (caterpillar), then to pupa (chrysalis or cocoon), and finally to adult. Lepidopterans play essential roles in ecosystems as pollinators and as a food source for other animals. They are also important for scientific research and are often studied for their behaviors, life cycles, and ecological impacts.