鞭节华扁叶蜂生物学习性研究

Bionomics of Chinolyda flagellicornis (F. Smith).

鞭节华扁叶蜂是浙江省新发现危害柳杉立木的毁灭性害虫。幼虫取食2年生枝梢的针叶和树皮,引起枝梢枯死或脱落,最后整株枯死。该虫在浙江丽水la发生1代,以预蛹在土室内越冬。幼虫5～7龄,4龄以后食量较大。成虫无明显趋光性,每雌平均产卵27.6粒,雌雄性比1:2。

Chinolyda flagellicornis (F. Smith) found at several counties in Zhe-jiang Province is a kind of destructive pest harming Cryptomeria fortunei Hooibrenk. It has one generation each year at Lishui City and the prepupa overwiters in the soil cell. The pest eats the skin and leaves at biennial branch, which could cause harmed trees died down. Larvae have 5 to 7 instars and the capacity for eating in quantity after the 4th instar. Adulta have not clear photokinesis. On an average, a female adult produces 27.6 ova. The ratio of male and female is 2:1.