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采用扫描电镜技术比较了短翅材小蠹[Xylosandrus brevis(Eichhoff)]和两色材小蠹[Xylosandrus disclor(Blandford)]成虫的形态特征。结果表明,2种雌成虫体均为圆柱形,前胸背板均无刻点区。雌成虫鞘翅截面沟间部在倒伏的茸毛丛中。短翅材小蠹竖立着1列鳞片,而两色材小蠹则是有1列较粗长的茸毛。短翅材小蠹雄成虫体长明显长于两色材小蠹,前者体圆柱形,前胸背板前面部分两侧上翘,前胸背板有纵中线,鞘翅形成截面,而后者体扁平,前胸背板无纵中线,鞘翅形成斜面。2个种雌成虫非常相似,不易区别,而雄成虫则形态差异较大,较易区别。
Morphological characteristics of adults of Xylosandrus brevis (Eichhoff) and Xylosandrus disclor (Blandford) were compared using scanning electron microscopy. The results showed that the two kinds of female adults were cylindrical, no engraved area of the pronotum. Female adult coleoptera cross-sectional area in the Ministry of lodging in the hair plexus. Short-winged small beetle erected a column of scales, and two-color beetle is a row of thicker hair. The length of the male Beetles was longer than that of the Beauveria bidentis. The former was cylindrical, and the anterior part of the anterior and posterior backwards were upturned. The longitudinal line of the front and back was formed, and the coleoptile formed a cross section, while the latter was flat, No vertical midline chest thoracodorsal, beetle formed bevel. 2 kinds of female adults are very similar, not easy to distinguish, while the male adult morphological differences, easier to distinguish.