International Journal of Horticulture, 2024, Vol.14, No.3, 142-155 http://hortherbpublisher.com/index.php/ijh 144 robust, disease-resistant citrus varieties, thereby securing the future of citrus production against the threats posed by ACP and HLB (Chaverra-Rodriguez et al., 2023). Figure 1 Details of an orange (Citrus sinensis) seedling tree leaf where a male Diaphorina citri was feeding on the abaxial surface of the leaf (Adopted from Alba-Tercedor et al., 2021) Image caption: The image illustrates the feeding details of a male citrus psyllid on a citrus leaf, explained in four parts. Figure (a) shows the point of penetration where the male citrus psyllid's stylet inserts into the leaf surface. The entry point of the stylet is clearly visible, demonstrating how the insect begins its feeding process on the leaf. Figure (b) is a cross-sectional view of the stylet penetrating the leaf tissue, displaying the path of the stylet within the leaf and how it reaches the vascular bundle. This detail reveals the specific interaction between the stylet and the plant tissue during feeding. Figure (c) presents a cross-section of the abandoned stylet and salivary sheath within the leaf. These abandoned structures indicate possible failed feeding attempts or the insect’s behavior of relocating its stylet during the feeding process. Figure (d) shows a longitudinal section of the mid-plane of the leaf, further illustrating the position and impact of the stylet within the leaf. This figure helps in understanding the anatomical effects of the insect's feeding behavior on the internal structure of the leaf. Through these detailed images, the anatomical and behavioral details of the male citrus psyllid's feeding process are better understood, particularly how the stylet interacts with the plant tissue, affecting its feeding efficiency and the damage to the plant (Adapted from Alba-Tercedor et al., 2021)
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