二点委夜蛾是鲁南地区2011年新发生的一种害虫,由于其侵害部位及幼虫形态与小地老虎相近,许多农民把二点委夜蛾误称为“地老虎”。其老熟幼虫体长20毫米左右,体色灰黄色,头部褐色,幼虫比较明显的特征是各体节有一个倒三角的深褐色斑纹,腹部背面有两条褐色背侧线,到胸节消失。蛹长10毫米左右,化蛹初期淡黄褐色,逐渐变为褐 It is a new pest that occurred in the Lunnan area in 2011. Many peasants misunderstood the two-spotted southern armyworm as the “tiger” due to the similar morphology and larvae’s morphology as the small tiger. Its mature larvae body length of about 20 mm, body color gray yellow, brown head, larvae more obvious feature is the sarcophagus has an inverted triangle dark brown markings, the back of the abdomen with two brown dorsal line to the chest section disappear . Pupae about 10 mm long, early pupation of light yellowish brown, gradually turned brown