Utah State University Extension
True bugs have piercing-sucking mouthparts and belong to the order Hemiptera and suborder Heteroptera. There are more than 38,000 species of true bugs, and are most closely related to aphids, cicadas, and leaf hoppers. Although some true bugs are considered pests, about one-third are predaceous. True bugs have forewings, or hemelytra, that cross over the back at rest, but sometimes the wings are reduced.
Hodgson, Erin W. and Patterson, Ron, "Beneficial Insects: True Bugs" (2007). All Current Publications. Paper 856.