Codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), is a worldwide pest of apple and pear. Due to the severity of codling moth in agroecosystems, it is a quarantine pest in countries where it is not considered an established species. Detection of codling moth infestations in exports intended for these countries is crucial to the U.S. apple industry. Tests were conducted on infrared thermoimaging that demonstrate detection of infestation by codling moth larva in apples. The system is dependent on subtle but significant differences in surface temperature between infested or entry sites and nearby uninfested sites. Because the imaging data are digital, computer programs can be used to rapidly and effectively sort infested fruits from the packing line.

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