Genus Spodoptera is a group of moths that belongs to the Noctuidae family. Some of the common names used to refer to this genus include armyworms, cutworms, and grassworms. The term armyworms is often used to describe the destructive nature of the larvae, which can destroy large areas of crops within a short period. Cutworms, on the other hand, refer to the habit of the larvae, which cuts the stems of the host plant at the soil level. Grassworms, as the name suggests, feed on grasses and are known to cause significant damage to pastures and turfgrass. These synonyms are often used interchangeably and are useful in identifying and controlling the pests that belong to this genus.