采用室内观察的方法,使用万能视频成像装置(LY-WN-HP SUPERCCD),对空心莲草野螟Herpetogramma fuscescens(Warren,1892)各虫态的形态学特征进行了系统观察。结果发现:成虫体小型,灰褐色。卵椭圆形,初产时乳白色,块状,外被腊质层。孵化前,部分卵壳分离为白色蜡质外层和棕黄色内层两层。幼虫共5龄,前胸背板骨化,中、后胸背部各具4个圆形斑,排成一列,两侧各具2个圆形斑;腹部各节背部具4个圆形斑,两侧各具3个小圆黑斑,黑斑上均具细长刚毛,气门明显。蛹棕红色,臀刺近锥形,其末端具1分叉短刺。 The morphological characteristics of each species of Herpetogramma fuscescens (Warren, 1892) were systematically observed by indoor observation using the LY-WN-HP SUPERCCD. The results showed that: adult body is small, brown. Oval egg, primiparous milky, massive, waxy outer layer. Before hatching, part of the egg shell is separated into a white waxy outer layer and a yellowish brown inner layer. Larvae total 5 years old, anterior and posterior plate ossification, in the back chest with four circular spots, arranged in a row, on each side with two circular spots; abdomen with four circular spots on the back, On each side with 3 small round spots, black spots on both slender bristles, valve obvious. Pupa reddish brown, gluteal nearly conical, its end with a forked spur.