The mature one is a type of the longhorn beetle. The newly hatched worn has creamy white color which burrows under the bark. Its flaky dung sticks outside at the intervals. The mature worm is 8-10 cm. long and a larva stage is 280 days.
The worm eats a durian peel when the fruit is 2-month-old to the mature phase. The worm lives in the fruit at the contacting spot or inside the fruit near the calyx; it does not drill through the seed. Therefore, the fruit is rotten and destroyed by fungi. As a result, the price is very low in the market.
Jack Beardsley Mealybug ruins durian by sucking the nutrients from every part, especially the fruit. As a result, the fruit is small and dwarfed. Moreover, Jack Beardsley Mealybug excretes the juice for ants, which brings Jack Beardsley Mealybug to the fruit and causes the kernel smut that makes the fruit looks dirty and gets low price.
There are many species of durian thrips. The caterpillar and mature thrips suck the nutrient from the bud, flowers and young fruit. The destroyed leaf has the burning mark and be crooked. The flower has the silver gray or black scar so it is imperfect and finally falls.
The grub and mature African red mite suck the nutrients from the leaf, upper side and lower side, so it turns pale green. The surface of lower side has the mark of the red mite which looks like dust. Finally, it would fall. It affects durian flowering and fruitage.