对鸭脚树星室木虱的卵和各龄期若虫的形态特征进行了扫描电镜观察和描述,测量了各龄期虫体的体长和体宽.1龄若虫体长为0.22-0.35 mm;2龄若虫体长0.35-0.60 mm,身体长椭圆形,腹部分节明显;3龄若虫体长0.51-0.83 mm,身体扁平,腹部分节不明显,沿身体一周着生截状蜡腺毛;4龄若虫体长1.0-1.5 mm,身体扁平,腹部分节明显,翅芽明显;5龄若虫体长1.2-2.0 mm,身体肥胖柔软. The morphological characteristics of the eggs and the nymphs of Picea schlegelii were observed and described by scanning electron microscopy, and the body length and body width of the parasites at different instars were measured. The body length of the first instar nymphs was 0.22-0.35 mm; 2nd instar nymph body length 0.35-0.60 mm, body oval, abdomen section obvious; 3rd instar nymph body length 0.51-0.83 mm, body flat, abdomen section is not obvious, along the body with a week Wax glandular hairy; 4th instar nymph body length 1.0-1.5 mm, flat body, abdominal section obvious, obvious wing bud; 5 nymphs body length 1.2-2.0 mm, body fat and soft.