Abstract
The feeding habits of the green rice leafhopper Nephotettix cincticeps UHLER in each developmental stages from 1st instar larva to adult were compared histologically with the salivary sheaths or feeding tracks remained in the tissues of the test plant, sorgham leaf. The basic type of their feeding habits did not change through all stages, but some differences were found. A few salivary sheaths of a 1st instar larva terminated in the large vascular bundles. This seems to be related with the length of the stylets. In all larval stages more salivary sheaths terminated in the xylem tissue than in the phloem tissue. It may have some relation with their nutritional requirement in the growing stages. The frequency of plagging in the conducting phloem and xylem tissues with the sheath materials increased according to the developmental stages of the larva.
