Study species
Tettigetta isshikii (Hemiptera: Cicadettinae) is a small cicada species distributed across East Asia, including Korea, Russia (Sakhalin, Ussuri, and Siberia), and China (Lee 2008) (Figure 2A). In Korea,T. isshikii is widespread on the mainland but not on the small islands, except for Jeju Island (Lee 2008). The species is found at various altitudes, ranging from 30 metres to as high as 1,000 metres (Lee et al. 2004; Jiman Heo, personal observation). Since T. isshikii adults feed on xylem sap from herbaceous plants and lay eggs in the stem of herbaceous plants, they are rarely found on trees (Jiman Heo, personal observation). During the day, adult male T. isshikii produce long calls to attract females, but they remain silent at night (Lee et al. 2004; Jiman Heo, personal observation).