通过直接观察和摄像机同步记录的方式，观测大华丽蜾蠃[Delta petiolata (Fabricius)]的筑巢与育幼行为，包括选址、取水、取泥、筑巢、产卵、捕虫和封口等环节。结果表明，大华丽蜾蠃一天的活动时间为8：00～18：00，完成1穴需要制作和搬运15～18个泥球，单次取泥时间为33～75 s，单次取水时间为15～22 s，筑巢耗费1个泥球的时间为41～209 s，单穴储存2～4只夜蛾幼虫；每天筑1穴，连筑8穴，每穴产卵1粒，共8粒，幼虫发育30 d左右，2只破巢而出，羽化为成虫，其余被寄生而未
Delta petiolata (Fabricius) is a kind of important insect. The method of direct observation and simultaneous video recording was used to observe the nesting and nursing behavior of Delta petiolata (Fabricius), including selecting the site, bringing the water and mud, nesting, ovipositing, catching insects and sealing the hole, and etc. The results showed that Delta petiolata (Fabricius) worked during 8 : 00 to 18 : 00, used 15～20 s for bringing the water, 33～64 s for bringing the mud, 50～180 s for one mud ball to nest. One hole needed 15～18 mud balls. One hole was built in one day, and 8 holes were built consecutively. One egg was laid in a hole. 2～4 noctilarvas were in one hole. Larva grew about 30 d, and then two ones became imagoes and successfully broke out of the nest. The others were parasitized and failed to grow. Besides, the whole process was successfully shot, including other behavior in the nest, and a video was made.