泰加大树蜂生物学特性的研究

Bionomics of Urocerus gigas taiganus

泰加大树蜂UrocerusgigastaiganusBenson是落叶松、云杉、冷杉的蛀干害虫。主要危害林中的濒死木、枯立木及新伐倒的原木、伐根。该虫在辽宁抚顺地区 1年 1代 ,以 2～ 5龄幼虫在木质部蛀道内越冬 ,第 2年 5月上旬老熟幼虫开始化蛹 ,成虫 5月下旬开始羽化并产卵 。

Urocerus gigas taiganus is a pest boring Larix gmelinii,Picea asperata and Abies fabri.It mainly attacks dying trees,snags,fresh logs and stumps.It has one generation a year and overwinters as the 2nd-5th instar larvae in the tunnels in xylems.The matured larva begins to pupate in the first ten days of May the next year.The adult emerges and lays eggs in the last ten days of May.The larva hatches in mid June.