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Summary The ultrastructure and development of new stylets was studied in pre-molting first instar nymph of Diaphorina citri Kuwayama (Hemiptera: Liviidae). Two oval-shaped masses of cuboidal hypodermal cells, located in the cephalic region, had long extensions that ended with developing pairs of mandibular and maxillary stylets, apparently coiled around these masses. A new structure, probably composed of softer cuticle, was found on the ventral side of each developing stylet suggesting that this structure may work as a mold during formation of the new stylets. Other organs of 1st instar nymphs, including the filter chamber and bacteriome, are also ultrastructurally described.

the florida entomologist

Ultrastructure and Development of the New Stylets Inside Pre-molting First Instar Nymphs of the Asian Citrus Psyllid<i>Diaphorina citri</i>(Hemiptera: Liviidae)

Ultrastructure and Development of the New Stylets Inside Pre-molting First Instar Nymphs of the Asian Citrus PsyllidDiaphorina citri(Hemiptera: Liviidae)