The Green Peach aphid, Myzus persicae Sulzer, is one of the most widespread insect pests worldwide. We established the ethogram of this species during the pre-reproductive period to understand the behavioral repertoire, organization of behaviors, and the context in which they occur. The behaviors that we observed include honeydew production (HDP), walking, wagging, pre-molting and molting. We noted the frequency and the amount of time for each behavior at different nymphal stages. As the nymphal stage increased, the rate of HDP decreased. The HDP seemed to occurred at regular duration and interval in each nymphal stage, while the wagging and walking seemed to be irregular behaviors. When wagging occurred before HDP, the successive HDP was significantly delayed, suggesting that aphids might not feed during wagging. Due to regularity through all nymphal-stages, HPD can be used for a good behavioral indicator in the related bioassay.

The green peach aphid, Myzus persicae, is one of the most widespread insect pest worldwide. We documented all behaviors of this species during the pre-reproductive period to understand the behavioral repertoire, organization of behaviors, and the context in which they occur. The behaviors that we observed include honey-dew production, walking, wagging, and molting. Honey-dew production occurred regularly at every 30-60 min throughout all nymphal stages. Walking seemed to occur when the host condition was not good, probably related to searching for a new host. Wagging, which was the turning of abdomen with the stylet in the plant, was also frequently observed, but the function of this behavior was unclear. We also noted the frequency and the amount of time for each behavior at different nymphal stages.

Since its first discovery in Jinchoen in 1998, three types of Bemisia tabaci have been recorded in the Repulic of Korea. Because B. tabaci damages the high-return produce such as eggplant and bell pepper, non-chemical methods are sought to control the B. tabaci populations. We studied the mating behaviors of Q-type B. tabaci by video-recording 20 virgin pairs using digital microscopes, of which 10 had a successful mating. The mating behaviors of Q-type males can be divided into searching, paralleling to female, mounting and wing-flicking stages, whereas those of females were almost motionless throughout the mating sequence. During the paralleling stage, males also exhibited antennal drumming and undulation behavior. B. tabaci is know to use vibratory signals during mating. To understand the frequency and function of vibratory signals, we are simultaneously video-recording mating behaviors and measuring vibratory signals by means of a laser vibrometer.