The most common North American species belong to the genus Collops. Species Collops hirtellus LeConte, 1876 is common in the Pacific Northwest. Most “melyrid” adults and larvae are predaceous. They are generalist predators feeding on aphids, green stink bug eggs, and larvae of the alfalfa weevil. They can be found in wheat, sorghum, alfalfa, grasses, and most crops attacked by aphids.