Morphology and ultrastructure of the sex pheromone gland of lepidopteran pest Heortia vitessoides
To further understand the biosynthesis and release mechanism of the sex pheromone gland in female adult of lepidopteran pest Heortia vitessoides,we used a combination of optical microscopy,scanning electron microscopy,and transmission electron microscopy techniques to observe its sex pheromone gland.The results showed that the sex pheromone gland of female adults of H.vitessoides manifests as a ring-shaped epithelial structure located on the intersegmental membrane between the 8th and 9th segments.A total of eight subtypes of sensilla in three groups were identified on the sensilla of the sex pheromone gland of female adults of H.vitessoides:four subtypes of sensilla trichodea Ⅰ-Ⅳ,two subtypes of sensilla chaetica Ⅰ-Ⅱ,and two subtypes of sensilla basiconica Ⅰ-Ⅱ,respectively.Gland cells were densely arranged in a single layer on the inner surface of the stratum corneum,ranging from columnar to round in shape,and the epidermis was divided into epicuticle and endocuticle.In addition,the gland cells exhibited a well-developed muscle layer,lipid droplets,and mitochondria,among other features.
Heortia vitessoidessex pheromone glandsensillaultrastructurescanning electron mi-croscopytransmission electron microscopy
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