日本松干蚧,又名松干蚧或松干蚧壳虫。它是我国松林中的主要枝梢害虫之一,在我省主要为害油松和赤松。树木受害后,由于皮层组织被破坏,造成树势衰弱,生长不良,针叶枯黄,芽梢枯萎。以后树皮增厚、硬化、卷曲翘裂。被害严重的幼树,常发生软化垂枝和树干弯曲。 Japan Song Kuwana, also known as Song Kuwana or Song Kuang insects. It is one of the main shoots of pests in pine forests in our country, mainly in the province of pine and red pine. After the trees have been harmed, the cortical tissue is destroyed, resulting in weakening of the tree, poor growth, yellowish needles and withered shoots. After bark thickening, hardening, curling cracked. Sick saplings often soften weeping twigs and trunks.