Big-eyed bugs (Image 1) are general predators of small insects. Some plant bugs, e.g., tarnished plant bug, (Image 2) are widespread crop pests. Knowing the difference is valuable for pest management purposes.
Image 1. Distinguishing features of Big-eyed bug adult.
Image 2. Distinguishing features of Tarnished plant bug adult.
More about Big-eyed Bugs
More about Tarnished Plant Bugs