落叶松种子广肩小蜂属膜翅目广肩小蜂科。幼虫食害落叶松种子,种子被害率10％左右,高者达27.9％,严重影响了种子产量和质量。广肩小蜂以老熟幼虫在种子内越冬,越冬的幼虫第一年有2/3能化蛹,第二年有1/3,还有极少数第三年才能化蛹、羽化,完成生活史。幼虫5月下旬化蛹,成虫自6月中旬开始羽化,6月下旬为羽化盛期,幼虫于7月中旬开始出现。 Larix seeds broad shoulders wasps Hymenoptera Hymenoptera small bee. Larvae eat larch seeds, seed damage rate of about 10%, up to 27.9%, seriously affecting the yield and quality of seeds. Broad-shoulders wasps to mature larvae overwinter in the seeds, overwintering larvae in the first year 2/3 can pupate, the second year of 1/3, and a very small number of the third year to pupate, eclosion, to complete the life history. Larvae in late May pupation, adults began to emerge from mid-June, late June feather period, larvae began to appear in mid-July.