![]() ![]() A second generation may appear about a month later. Large larvae may travel up to 12 m in search of prey. septempunctata larvae grow from about 1 mm to 4-7 mm in length over a 10 to 30 day period depending on the supply of aphids. The eggs are small (about 1 mm) and spindle-shaped.Ĭ. Eggs are usually deposited near prey such as aphids, often in small clusters in protected sites on leaves and stems. Females may lay from 200 to more than 1,000 eggs over a one to three month period commencing in spring or early summer. In spring, emerging beetles feed on aphids before laying eggs. Reported prey include pea, cowpea, green peach, potato, corn leaf, melon aphids, and greenbug.Īdults overwinter in protected sites near the fields where they fed and reproduced. Eggs are spindle shaped and small, about 1 mm long.Īphid infested crops, including potatoes, legumes, sweet corn, alfalfa, wheat, sorghum, and pecans. Lady beetle larvae are dark and alligator-like with three pairs of prominent legs, growing to 7-8 mm in length. The spot pattern is usually 1-4-2, black on the orange or red forewings. septempunctata may be a more effective predator than some native lady beetle species, displacing them in some areas.Ĭomparatively large (7-8 mm) with a white or pale spot on either side of the head. It has since spread naturally or been introduced to many northeastern and north central states. ![]() The sevenspotted lady beetle, repeatedly introduced to North America from Europe for the biological control of aphids, was established in the early 1970s in New Jersey, apparently from an accidental introduction.
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