核桃举肢蛾以幼虫钻入核桃青皮内蛀食,使受害果逐渐变黑而凹陷,故有“核桃黑”之称。此虫在我省多为1年1代,以老熟幼虫于土中1～2厘米处结茧过冬。老熟幼虫体长9—12毫米,浅黄白色,背中央有紫红色斑点。翌年5月中旬开始化蛹,6月上旬为盛期。5月下旬成虫开始出现,6月中旬大量出现,为小型黑褐色蛾子,翅展13—15毫米,后足发达,静止时左右上举翘于体侧。 Walnut Ligustrum moth larvae walnut peel drilled into the food, the victim gradually darken and hollow, so “walnut black,” said. This insect in our province mostly 1 year 1 generation, with mature larvae in the soil 1 to 2 cm at the cocoon winter. Mature larvae body length 9-12 mm, light yellow and white, the back of the center with purple spots. Mid-May the following year began pupation, early June for the peak. Adults began to appear in late May and appeared in large numbers in mid-June. They are small dark brown moths with a wingspan of 13-15 mm. The developed hind legs are still on the sides of the body when resting.