Investigation of Cicada Density in Urban Park

Abstract

In this study, we investigated the occurrence patterns and densities of cicadas in 18 urban parks in Seoul, Korea. Considering the ecological characteristics of cicadas that occured only in summer, the temporal changes of cicadas were investigated every week from June to September in 2017. Cicadas densities were measured using the final instar exuviae of cicada, which showed distinct morphological differences between species. A total of 7,369 cicada exuviae of six species were collected, and the dominant species in urban park were <i>Hyalessa fuscata</i> (44.8%) and <i>Cryptotympana atrata</i> (41.7%). There was no clear difference in the pattern of occurrence by species, but it occurred most frequently around August when the rainy season ended.