This lady beetle has been repeatedly introduced to North America from Europe as a biological control agent. It was established in the early 1970s in New Jersey and has been spread naturally throughout North America. Both the adults and the larvae are voracious predators of aphids. C. septempunctata may be a more effective predator than some native lady beetle species, displacing them in some areas. These predator are found in aphid infested crops, including potatoes, legumes, sweet corn, alfalfa, wheat, sorghum, etc.