桉树枝瘿姬小蜂生物学特性研究

Bionomics of Leptocybe invasa Fisher & La Salle

通过林间观察和室内试验相结合,对桉树枝瘿姬小蜂(Leptocybe invasa Fisher&La Salle)生物学特性进行了研究。该虫在成都等地1 a发生2代~3代,世代重叠,以幼虫在虫瘿越冬。5月下旬~10月上旬均有成虫羽化。成虫羽化出孔集中在上午8时至下午2时,数量占全天羽化量83.58%。成虫飞行能力较弱,多在晴天活动,有趋上和趋光的特性。

According to the observations both outside and in lab, Leptocybe invasa had 2 or 3 generations a year in Chengdu area and the generations were overlapped.The larvas overwintered in the galls .The adults of the overwintering generation began to emerge in last ten days of May.And the adults would be seen until the first ten days of October.About 83.58% of the adults flew out of the eclosion holes between 08：00 and 14：00.The adults preferred to move than fly,with phototaxis and upward-taxis.