Answer: I'd guess the damage to the leaves was caused by the storm and not by insects. Impatiens leaves are tender and can be bruised and torn by wind and heavy rain. The insect you describe sounds like the Tortoise Beetle (Metriona bicolor). It does feed on leaves, but one insect shouldn't damage an entire plant. Tortoise beetles prefer the foliage of morning glory, bindweed and sweet potato, but if it's hungry enough it might feed on impatiens. Yellowing leaves may be a sign of poor soil fertility, or of impending autumn weather. New Guinea Impatiens are perennial plants, but they're tender and are generally grown as summer annuals in cold-winter climates. Continue to give your plant regular care, but expect that it will die down at the end of the summer season.
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