柿树枝干新害虫二齿茎长蠹的初步观察二齿茎长蠹（ＳｉｎｏｘｙｌｏｎｊａｐｏｎｉｃｕｎＬｅｓｎｅ）属鞘翅目，长蠹科。北京地区仅发现为害枯木桩，对柿树的危害国内尚未见研究报道。１９９１年以来，笔者对其在柿树上的发生危害、形态特征和生活习性等进行了初步观察，... Preliminary observation on the new insect pest Bicodellidae of the persimmon tree. Sinoxylon japonicun Lesne is a coleoptera and long moth. In Beijing, only the dead wood stakes were found, and the damage to persimmon trees has not been reported yet in China. Since 1991, the author has made preliminary observations on its occurrence, morphological characteristics and living habits in persimmon.