栓皮栎栎链蚧生态二型性的研究(同翅目,蚧总科,链蚧科)

ASTUD YOU THE DTMORPHESM OF ASTERODIASPISV ARIABILE (RUSSELL)(HOMOPTERA, COCCOIDEA, ASTEROLECANIIDAE)

蚧的生态二型(或多型)性研究,是近年来蚧虫学研究领域中较为活跃且进展迅速的内容,为澄清许多属、种的关系提供了重要依据。同时,也从一个侧面反映了昆虫和其寄主植物的协同演化关系。本文通过移接虫试验的方法和对一龄若虫结合雌成虫形态的研究,确证栓皮栎栎链蚧Asterodiaspis variabite(Russell)的雌成虫受其寄主不同部位(干、枝和叶片)的影响而表现出生态二型性,描述了食干型、食叶型雌成虫和一龄若虫的形态,并绘图,补充订正了前人的研究,为首次报道。

In recent years, the study of ecological dimorphism (or polymorphism) of scale insectshas been developed rapidly, which has provided important basis for identifying some relat-ed species or genera. The adult female of the species Asterodiaspis variabile (Russell) hadecological dimorphism under the influence of different parts (stems or leaves) of its planthost by artificially transferring first instar nymphs in light of the study on morphology ofadult females and first instar nymphs. The morphology of leaf-form, stem-form adult fe-males and first instar nymphs is described and drawed. The main differences betweenleaf-form and stem-form adult females as follows:(1) Leaf-form adult female is circular,obviously larger than the stem-form. (2) The dorsal 8-shaped pores of the leaf-form arefewer than those of the stem-form. The morphology of first instar nymphs under twoforms of adult females is unique.