Morphology of antennal sensilla and their distribution were investigated in male and female adults of Plautia stali,a major pest of tree fruits, using scanning electron microscopy. Antennae of P. stali was composed of a scape, a pediceland three flagella in both sexes. Four types of sensilla (s. trichodea, s. basiconica, s. chaetica, s. coeloconica) were identifiedfrom both sexes. Among them, s. trichodea and s. basiconica were multiporous, others are not. They distributed in varyingnumbers. Sexual dimorphism was not shown in the distribution of the four sensilla types. But their distribution was characterizedalong antennal segments in both sexes. This study will be useful in electrophysiological and behavioral studies on theolfactory sensory function of each morphological type of sensilla.

• Gwang Hyun Roh(Institute of Agriculture and Life Science)
• Su Bin Jo(Department of Plant Medicine (BK21+ Program), Gyeongsang National University)
• Yeon Jeong Lee(Department of Plant Medicine (BK21+ Program), Gyeongsang National University)
• Chung Gyoo Park(Institute of Agriculture and Life Science, Department of Plant Medicine (BK21+ Program), Gyeongsang National University)