Observation on Antennal Sensilla of Geisha distinctissima Walker Adult with Scanning Electron Microscope

Antennal morphology and sensilla on the antennae of Geisha distinctissima Walker have been observed with scanning electron microscopy.The results show that the setaceous antenna is comprised of a scape,pedicel and flagellum.The antennae of females are longer than those of males.The number of sensilla is not much,but the types of sensilla are rich.There are two types of sensilla trichodea,bent-tipped sensilla,zonated sensilla,sensilla coeloconica,ear-shaped sensilla,sensilla triangle and sensilla auricillica.Bent-tipped sensilla and ST2 are only found on the antennae of males,instead,zonated sensilla and sensilla auricillica have observed on that of females.There are no any sensilla on flagellum.