Plant penetration by aphids can be monitored electrically by the electrical penetration graph (EPG) technique. To confirm whether some behaviors are correlated to specific graph pattern in EPG, we analyzed the two synchronized data, EPG and video records. We recorded electrical penetration graph (EPG) and behaviors of aphids simultaneously. Then we compared the behaviors of aphids with the recorded EPG waveforms in order to match their visible behaviors and invisible behaviors with stylet. The visible behaviors were categorized for walking, wagging, honeydew production, and reproduction. When the aphids were generally motionless, the EPG denoted feeding-related waveforms (E1, E2, F and G). Whereas, probing waveforms (B and pd) frequently occurred when they were wagging. We aim to present the correlation between observed behaviors and EPG patterns.

• Hyoyoung Jang(Division of EcoScience, Research Institute of EcoScience, Ewha Womans University)
• Hyojoong Kim(Division of EcoScience, Research Institute of EcoScience, Ewha Womans University)
• Yikweon Jang(Division of EcoScience, Research Institute of EcoScience, Ewha Womans University)