植物检疫

为了明确扶桑绵粉蚧（Phenacoccus solenopsis Tinsley）雌成虫及蜡丝的结构特征，利用场发射扫描电镜观察了该虫触角、足等主要器官及泌蜡腺、蜡丝的超微结构。结果表明，扶桑绵粉蚧雌成虫体缘具18对蜡棒，背腹面覆盖大量白色蜡粉，触角9节，眼为单眼，腹脐唇形。泌蜡腺有3种类型，为三格腺、多格腺和管腺。蜡丝相应也有3种类型，分别是三格腺分泌的中间薄两边厚的扁平蜡丝、多格腺分泌的空心扁平状蜡丝和管腺分泌的空心管状蜡丝。三格腺分泌的蜡丝大量覆盖在虫体的背腹面和体缘；多格腺分泌的蜡丝分布于虫体腹部腹面和体缘；管腺分泌的蜡丝零散分布于虫体腹面。研究结果可为从超微结构着手准确鉴定扶桑绵粉蚧提供可能，也为探明其定殖机制提供科学依据。

The main goal was to definite the structural features of Phenacoccus solenopsis Tinsley female adult and its wax filaments. Field emission scanning electron microscopy was used to observed the ultrastructure of antenna,foot,wax filaments and wax glands. The body surface of P. solenopsis female adult was covered with a lot of white wax powder. The body edge have 18 pairs of wax rod,9-segmented antenna.The eyes was ocelli and the circulus was lip-shaped. The wax glands including trilocular pores gland,multilocular pores gland and tubular ducts gland. The wax filaments including flat wax filaments secreted by trilocular pores glands which were thin in the middle and thick on both sides and widely distributed on the whole body surface,and the hollow flat-shaped wax filaments were secreted by multilocular pores glands which mainly distributed on the abdominal ventrum and margin,while the hollow wax tubes were secreted by tubular ducts glands which scattered distributed on the ventral surface. The study might provide a possibility for accurately identifying the P. solenopsis from the perspective of ultrastructure,and also provide scientific basis for exploring the colonization adaptation mechanism of P. solenopsis.