An order of the class Insecta sometimes referred to as the Heteroptera. Both names refer to the forewings, which are differentiated into a thickened basal area and a membranous apical region. These are the true bugs. The related order, Homoptera, has forewings of uniform texture. Included in Hemiptera are such common insects as the bedbugs, stink bugs, plant bugs, lace bugs, and backswimmers.