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1982—1986年,对河南各小麦产区的蚜茧蜂发生情况进行了调查,共发现7种蚜茧蜂,其中以烟蚜茧蜂和燕麦蚜茧蜂发生量最大,持续时间最长。在麦田,蚜茧蜂主要寄生麦长管蚜和麦二叉蚜的2—3龄若虫,麦长管蚜的被寄生率最高,占总寄生量的79%。室内饲养和田间观察表明,蜂羽化后半小时即可交尾,盛期在早上6—8点半和下午5—7点,产卵盛期在早上8—10点和下午4—6点。一头雌蜂可连续寄生3—5头蚜虫,多者达18头。每头蚜虫只被蜂产卵一次,发育成僵蚜后只出一头蜂,凡是出多头蜂者均为重寄生蜂,蚜茧蜂有产雄孤雌生殖现象。
From 1982 to 1986, the occurrence of Aphidius pulchricornis in various wheat producing areas of Henan Province was investigated. Seven kinds of Aphidius pulchricornis were found, of which Aphidium brassicae and Aphidius pulchricornis occurred most frequently and the longest duration. In the field of wheat, aphids mainly parasitize the 2-3-year-old nymphs of wheat aphid and wheat aphid, and the highest parasitic rate is aphid, accounting for 79% of the total parasitism. Indoor rearing and field observations showed that the bee eclosion could be done within half an hour after mating, with peak periods between 6:30 AM and 5 PM and 5-7 PM in the morning, with spawning periods between 8-10 AM and 4-6 PM in the morning. A female bee can parasitize 3-5 consecutive aphids, as many as 18. Each aphid was bee eggs only once developed into a dead aphid queen bee, who are all bees are heavy parasitoe aphid, bees have genital parthenogenesis.