Orthopterans are a group of insects that include species such as grasshoppers, crickets, and katydids. They are characterized by their straight wings and strong hind legs, which are adapted for jumping. Most orthopterans are herbivorous, feeding on a variety of plants, and they are known for their distinctive sounds, produced by stridulation, where they rub their wings or legs together. These insects are found in diverse habitats around the world, from grasslands to forests. Orthopterans play important roles in ecosystems as both herbivores and prey for various animals. Their presence can indicate the health of an environment, making them valuable for ecological studies.