绿尾大蚕蛾Actias selene ningpoana Felder是森林害虫之一,也可能是资源昆虫之一。对其生物学研究国内曾有报道,但除汪广(1957)观察到其生活史为周年发生世代以外,其余只记录过一个世代的经过。近年,我们曾持续两年观察其发生过程。现把结果报道如下。一、生活史:据饲养观察,绿尾大蚕蛾在广州地区一年发生四代,以蛹越冬。各世代起迄时间是:第一代卵3月上旬至4月下旬,幼虫3月中至6月上旬、蛹5月中至6月上旬,成虫5月下旬至6月下旬,世代历期65天;第二代卵5月下旬至6月下旬、幼虫5月下旬至7月中,蛹6月中至7月下旬,成虫7月上旬至8月上旬,世代历期57天;第三代 Actias selene ningpoana Felder is one of the forest pests and may also be one of the resource insects. There have been reports of its biological research in China, except that Wang Guang (1957) observed that his life history is the generation of annals on the anniversary. Only the rest of his life has been recorded. In recent years, we have observed the course for two years. The results are reported below. First, the history of life: According to feeding observation, large green moth in Guangzhou area occurs four generations a year, with pupa overwintering. From the first generation of eggs in early March to late April, larvae from mid-March to early June, pupa mid-May to early June, adults from late May to late June, the generation of 65 Day; the second generation of eggs from late May to late June, larvae from late May to mid July, pupa mid-June to late July, adult early July to early August, 57 days of the generation period; the third generation