Ultrastructural Observation of Antennal Sensilla of Euzophera pyriella ( Lepidoptera: Pyralididae)

The aim of the study was to understand the antennal sensilla type,distribution and shape of the Euzophera pyriella Yang.The sensilla of adult antennae were observed by using scanning electron microscope(SEM).The results showed that six types of sensilla were found on male and female E.pyriella Yang,namely sensilla trichodea,sensilla chaetica,sensilla cylindric,sensilla auricillica,sensilla coeloconica,and sensilla squamiformia,among which the sensilla trichodea was the most numerous and the sensilla cylindric was found only in male.The sensilla were not observed on the antennal scape and pedicel.The paper provides basic data for its further study about ecology,behavior and electrophysiology,at the same time,differences between antennae of E.pyriella Yang and other similar insects and physiological functions on some sensilla are to be analyzed.