Studies on the morphology, histology and cytology of the female sex pheromone glands of Clania variegata were made with optical microscope and scanning electron-microscope. Results show that the sex pheromone glands are isolated glandular units, each of which is composed of a gland cell and intercalary cells. The gland cell are mainly situated in the thorax terga, especially in the mesothorax tergum, with a few in its head and terga of the first and the second abdominal segments. The branched canal penetrates the gland cell to form the end apparatus, and seems to be formed by the secretion of the gland cell itself, for no canal cell exists. Thus, the gland cell of Clania variegat appears to be a new type of the insect epidermal gland cell.