Abstract: Objective Objective To observe the Tyrophagus palmarum and its hypopus in feed of Tenebrio molitor. Methods Methods Feed samples were collected from T. molitor farms，and T. palmarum and its hypopus were separated from the samples by the vibra? tion sieve method and floating method. The glass specimens were prepared and T. palmarum and its hypopus were observed un? der an optical microscope. Results Results Under the light microscope，the skin of T. palmarum was smooth and bright，the color of legs and chelicerae was relatively dark，the length of dorsal seta d2 was 3?4 times longer than d1 and la；The ω1 in tarsus of leg Ⅰ，Ⅱ was short rod，and its top was not tapered；the sucker plate in tarsus of leg Ⅳ located in the middle of the section. The hypopus was oblate，and there were two pairs of legs in front which extended to body. The rear end of hypopus became pointless and round，wrapping around a transparent and ossification skin. Conclusion Conclusion Light microscopy shows the morphological charac? teristics of T. palmarum and its dormant body， providing the basis for identifying the hypopus.

Key words: Tyrophagus palmarum, Hypopus, Morphology

摘要： 目的 目的 观察黄粉虫养殖饲料中阔食酪螨及其休眠体的形态。方法 方法 采集某黄粉虫养殖场的饲料样本， 采用振 筛分离法和漂浮法分离其中的阔食酪螨及其休眠体， 制备标本玻片， 光镜下观察鉴定。结果 结果 光镜下可见阔食酪螨表皮 光滑明亮， 足和螯肢颜色较深， 背毛d2长度为d1、 la的3 ~ 4倍； 足Ⅰ、 Ⅱ跗节ω1呈短杆状， 顶端不逐渐变细； 足Ⅳ跗节端部 吸盘位于该节中间。休眠体躯体扁圆， 前端有2对足伸出， 后缘渐钝圆， 周围包绕一层透明且骨化明显的表皮。结论 结论 光镜下观察了阔食酪螨及其休眠体的形态特征， 为鉴定提供依据。

关键词: 黄粉虫, 阔食酪螨, 休眠体