毛健夜蛾卵和幼虫及蛹形态特征研究

Morphology of Egg,Larva and Pupa of Brithys crini(Fabricius)

试验以采于杭州市西溪国家湿地植物园内葱兰叶片上并经过人工饲养的毛健夜蛾的卵和蛹为标本,观察其形态特征,以期为进一步的害虫综合治理提供了科学的基础资料。结果表明:毛健夜蛾体长42～48mm,头宽3.3～3.8mm。幼虫背部呈黑色,腹部呈灰色,头部呈橘黄色且光滑,有黑斑4枚。卵直径0.8～1.0mm,为半球形立式卵,刚生的卵为鲜黄色,中期乳黄色或紫红色。蛹长16～21mm,蛹宽5.4～7.6mm,蛹体长椭圆形,呈棕红色或黑色。

Eggs and pupae of artificial rearing Brithys crini were used as sample collected from leaf of Zephyranthes in Xixi National Wetland Botanical Gardenas in Hangzhou, it＇s morphological characteristics were observed. With a view to further integrated pest management provides a scientific basis. The results showed that body lengh was 42 - 48 mm,head width was 3. 3-3. 8 mm of Brithys crini. Larvae was back black,the abdomen was gray, the head was orange and smooth, black spot was 4. Egg diameter was 0.8-1.0 mm and was vertical hemispherical, new eggs were bright yellow,metaphase eggs were yellow or purple milk. Pupa length was 16-21 mm,pupa width 5.4-7. 6 mm. Pupa long oval, brownish-red or black.