摘  要  【目的】本文研究并描述危害大叶黄杨（冬青卫矛）Euonymus japonicus Thunb的钻蛀性害虫大叶黄杨窄吉丁 Agrilus euonymi Tôyama, 1985 各虫态的形态特征及危害特性，并观察其虫道三维结构，以期为大叶黄杨窄吉丁的发生监测及防控提供依据。【方法】 查阅国内外相关文献，将大叶黄杨窄吉丁学名的变化过程进行记述整理，详细描述幼虫、蛹、成虫的形态特征；观察大叶黄杨窄吉丁危害的各个指标特征，包括虫口密度、坑道特征、羽化孔特征和蛹室特征等，明确了完整虫道的发生规律。利用分子生物学方法对大叶黄杨窄吉丁进行鉴定，提取其基因组 DNA，使用鞘翅目通用引物扩增线粒体细胞色素氧化酶亚基Ⅰ（COⅠ）序列并测序，在 NCBI 数据库进行序列比对，并构建系统发育树。基于对受害木段进行多角度，全方位的拍摄，首次在虫害木解析中使用 Image-based-Rendering(IBR) 技术对吉丁虫道三维模型进行重建。【结果】 成虫形态特征完全符合大叶黄杨窄吉丁的描述，基于 COⅠ 基因序列构建系统发育树（Mrbayes树）显示，采集到的吉丁与2个俄罗斯远东样本序列聚为一支，结合文献，进一步明确其为大叶黄杨窄吉丁。大叶黄杨窄吉丁主要危害树干韧皮部及木质部，具向阳性；在树皮下钻蛀坑道，无明显侵入孔；蛹室米粒状，位于木质部；羽化孔“D”型；坑道形状有一定规律，可分为 S 型及其变型2种，密集纵向迂回型。【结论】 详细的形态特征描述、正确的学名厘定、基因序列分析信息，有利于大叶黄杨窄吉丁的鉴定及学名的正确使用；复原完整虫道信息便于在非成虫期结合寄主种类鉴定害虫种类、评估虫口密度和危害程度，为大叶黄杨窄吉丁的监测提供了具体的判别方法，为化学防治、生物防治等提供参考与技术支持。

Abstract [Aim]  To review the nomenclature and describe the morphological characteristics and larval galleries of Agrilus euonymi Tôyama, 1985, a buprestid beetle that damages Euonymus japonicus Thunb, and thereby provide guidance and suggestions for the monitoring and prevention of this pest. [Methods]  A review of the relevant domestic and foreign literature was conducted to clarify changes to the scientific name of A. euonymi. Morphological characteristics of larvae, pupae, and adults were observed and described in detail. We analyzed the gallery characteristics of A. euonymi, including population density, gallery length and width, entrance hole, pupal chamber and emergence hole. To identify the species at the molecular level, DNA was extracted and the mitochondrial cytochrome oxidase subunit Ⅰ (COⅠ) amplified and sequenced using general coleopteran primers. Sequences were compared with existing Agrilus sequences in the NCBI database and a phylogenetic tree of closely related species constructed. A. euonymi galleries were photographed from different angles, and reconstructed in three dimensions using Image-based-Rendering, a first for a buprestid beetle. [Results]  Morphological characteristics of adults were completely consistent with the published description of A. euonyi. A Mrbayes tree based on COⅠ gene sequence variation showed that all samples clustered onto the same branch as two samples from the Russian Far East. Together with information from the literature, this confirmed that our samples were A. euonymi. A. euonymi mainly damages the phloem and xylem of the trunk and is active on the sunny side of host trees. A. euonymi bores galleries without entrance holes under the bark of host trees. The pupal chamber is shaped like a grain of rice and is in the xylem. The eclosion hole was ‘D’ shaped. Tunnels were of two types; the S-type and its variants and the dense longitudinal roundabout type. [Conclusion] Morphological characteristics, clarification of the correct scientific name and gene sequence analysis confirmed the identify of specimens as A. euonymi. A three-dimensional reconstruction of its larval gallery structure also helped with identification and assessing the damage to host trees. These findings provide technical guidance for the monitoring and control of this pest.