[Morphological observation on hypopus of by optical microscope].

To observe the external morphology of hypopus under an optical microscope. The samples were collected in a store of Chinese medicinal herbs in Huainan City in September, 2016, the and the hypopus were isolated, and then made of slide specimens. The slide samples were prepared and observed under an optical microscope. The hypopus and protonymph were found. The inactive hypopus was oval in shape, the feet were not welldeveloped, there was a distinct transverse seam on its back, and there were 2 pairs of genital sensory organs. The optical microscopy shows the morphological characteristics of hypopus, which can provide the basis for the biological classification and the prevention.