中国南方竹区4种竹笋夜蛾的形态比较研究

竹笋夜蛾是我国重要的一类竹子笋期害虫,种类多,形态相似,难以区分,为更为准确地识别主要竹笋夜蛾的种类,本研究通过野外取样和室内饲养,对竹笋基夜蛾Kumasia kumaso、竹笋禾夜蛾Oligia vulgaris、笋连秀夜蛾Apamea repetita conjuncta及竹笋秀夜蛾Apamea apameoides 4种竹笋夜蛾卵、幼虫趾钩、臀棘及成虫翅脉和生殖器形态进行了观察和比较。结果表明,竹笋基夜蛾在卵形态、幼虫体色和雌雄生殖器形态上与其他3种竹笋夜蛾形态差异明显,其余3种夜蛾幼虫体表背线和亚背线形态有差异,趾钩、臀棘、翅脉和雌、雄外生殖器形态差异不显著。本研究明确了我国南方竹区4种竹笋夜蛾的形态差异,为竹笋夜蛾的精准防控提供了参考。

Morphological comparison among four species of bamboo shoot borers (Lepidoptera: Noctuidae) in South China

The bamboo shoot noctuids are the dominant and most destructive insect pests of bamboo in South China, and it was very difficult to identify the species due to their similar morphological characters. To exactly distinguish the bamboo shoot borers, the morphology of eggs, crochets of larvae, cremasters of pupae, pterigostia and genitalia of adults of four bamboo noctuids, Kumasia kumaso, Oligia vulgaris, Apamea repetita conjuncta and A. apameoides were observed. The results showed that the morphological characters of eggs, larvae and genitalia of adults were significantly different from those of other three species, and the morphology of eggs, crochets of larvae, cremasters of pupae, veins and genitalia of adults among Oligia vulgaris, Apamea repetita conjuncta and A. apameoides were similar. This study explicated the difference in the morphological characters among the four bamboo noctuids, and provided the basis for the accurate control of bamboo shoot borers.