九华囊粉蚧幼期形态描记及其袋状附器来源讨论(同翅目:粉蚧科)

Morphological descriptions on immature stages of Porisaccus jiuhuaensis(Wu) and the origin of bag-like appendage(Homoptera: Pseudococcidae)

该文首次描述和图示了九华囊粉蚧(Porisaccus jiuhuaensis(Wu))的各龄幼期特征.基于足和漏斗状内陷从第一龄若虫至成虫的发展变化情形,作者讨论了雌成虫体腹面的袋状附器的来源,认为其乃后足退化变形之物.

In this paper, three immature stages of Porisaccus fiuhuaensis （Wu） were described and illustrated firstly and then, discussion on the origin of bag-like appendage on ventral surface of adult female showed that this bag-like appendage was vestige of the metathoracic legs based on degeneration of legs and absence of oval pore plate from the 1 st instar nymph to adult female.