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3.小蠹虫小蠹虫属鞘翅目小蠹科。多为小形甲虫,体色深暗,头部较胸部狭窄,触角曲柄状呈锤形,口吻短而幅广,上颚大而弯曲,内侧有齿。前胸与鞘翅同宽,两侧无凹陷。鞘翅有光泽,上有茸毛、刺或小点刻,末端常有乳头状、叉状突起。前足胫节外侧长有并列的小齿或锯齿,跗节粗短,第一跗节较其它跗节之和还长,第三跗节分为两叶。幼虫无足或仅有痕迹状的胸足,体软,乳白色多弯或呈“C”
3. Bark beetles Beetles Coleoptera small moths Branch. Mostly small beetles, body color darker, the head than the chest narrow, tentacles crank-shaped hammer, short and wide mouth, palate big curved, medial teeth. The chest and coleopterygium width, no depression on both sides. Cole wings glossy, hairy, stinging or small moment, the terminal often papillary, fork-like protrusions. Front foot tibia lateral juxtaposed with small teeth or serrated, stubby stubby, the first knot than the other knot and the total length of the third knot is divided into two leaves. Larval footless or only traces of the chest and feet, soft, milky white or curved “C”