Which type of insect is commonly associated with the infection of pear trees?

The codling moth is commonly associated with the infection of pear trees because it is a significant pest that specifically targets varieties of pome fruits, including pears and apples. The larvae of the codling moth burrow into the fruit, leading to direct damage and often causing fruit drop or creating entry points for diseases. This makes them particularly problematic for pear tree cultivation.

In contrast, butterflies primarily serve as pollinators and do not harm the pear tree itself. Ladybugs are known for their beneficial role in gardens as they feed on aphids and other pests, while grasshoppers are generalists that might feed on various plants but are not specific pests of pear trees. Understanding the specific threats posed by the codling moth is essential for effective pest management in pear orchards.