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宽肩象(Ectatorrhinus adamsi pascoe)是青麸杨(Rhus potaniniMaxim)的蛀干性害虫。在汉中地区一年发生一代,以成虫越冬,4月初开始活动5月中旬产卵于树皮内,卵期10天。幼虫取食形成层,然后进入木质部。8月中旬化蛹,9月羽化为成虫。成虫不善活动,假死性很强,每雌产卵量平均为7.8粒。此虫的发生与品种、树龄、树势、树干部位,以及林木的立地条件均有一定关系。林间试验结果表明:50％杀螟松,300倍液和每毫升2亿孢子的白僵菌液防治效果较好。
Ectatorrhinus adamsi pascoe is a borer pest of Rhus potanini Maxim. Occurred in Hanzhong a generation a year, with adult wintering, beginning activities in early April mid-May spawning in the bark, the egg period of 10 days. Larvae feed on the formation of layers, and then into the xylem. Mid-August pupation, September emergence into adults. Adults do not do well, and have a good lethality. The average fecundity per female is 7.8 grains. The incidence of insects and species, age, tree potential, trunk parts, as well as the site conditions of trees have a certain relationship. The results of inter-forest experiment showed that 50% fenitrothion, 300 times liquid and 2 million spores per milliliter of Beauveria bassiana liquid had better control effect.