The females use their ovipositors to bore into the bark . 雌蜂用其产卵器钻入树皮。
2.
Provided with additional fresh hosts at emergence and the early stage of adult , the females showed no increased preference to volatiles in the y - tube olfactometer 羽化期和成虫初期是否投放新鲜寄主，对雌蜂的气味选择性没有明显的影响。
3.
However , the number of hosts parasitized betwween chinese cabbage cultivars , or common cabbage cultivars was no difference . ( 4 ) the role of plant volatiles from the chinese cabbage and the common cabbage in host selection behaviour of d . semiclausum females was investigated by y - tube olfactometer 当白菜和甘蓝植株是完整的、或仅遭机械损伤时，两种蔬菜的挥发物对雌蜂的引诱力相似，而当植株遭受小菜蛾取食、或正在被小菜蛾取食时，白菜挥发物对雌蜂的引诱力较甘蓝的显著要强。
4.
The results showed that the female parasitoids in different microhabitats from pine needles , pine barks , turpentine , and fir barks respectively , responded positively to the corresponding volatiles when they were offered with a two - ways choice between blank and the volatiles previously experienced at emergence and the early stage of adult , but the females showed no learning behavior to fir leaves though they had experienced the fir leaves microhabitats 结果表明，川硬皮肿腿蜂羽化期和成虫初期经历松枝皮、松针、松节油、杉枝皮等的挥发物后，雌蜂对这些挥发物的选择性明显提高，但对杉叶挥发物无明显的学习行为。
