Miridae are a large and diverse insect family previously known as Capsidae. Species in the family may be referred to as capsid bugs or “mirid bugs”. Common names include plant bugs, leaf bugs, and grass bugs. It is the largest family of true bugs in the suborder Heteroptera, and includes over 10,000 species, with new ones being described constantly. Most widely known mirids are species that are notorious agricultural pests that pierce plant tissues, feed on the sap, and sometimes transmit viral plant diseases. Some species are, however, predatory.