Stick insects are primarily nocturnal herbivores. They display an extreme type of masquerade crypsis, showing morphological and behavioural characteristics similar to twigs, bark, lichens, mosses, and leaves. The eggs of stick insects vary in size and shape, featuring exquisite sculptures and patterns. The authors studied the egg structure and egg mass of 39 eggs of Trachythorax illaesa. The study provides a detailed examination of the egg mass and egg structure.