Introduction
As environmental changes due to climate warming have recently become known as serious problems, social demands for studies focusing on the influences of climate changes on the ecosystem have gradually increased (Choi and Choi, 2011). The first step for such climate change impact research is to select indicator species suitable for the research. For insects, research studies have been most actively conducted on butterflies. Although there were many attempts to study other insects such as beetles, significant results like those found in butterflies have not yet been produced. Ants are very likely to be an indicator species for monitoring environmental changes owing to their sedentary habit, long activity season, high diversity and density, and high relation with environmental factors. For these reasons, 31 researchers in six countries proposed a standard monitoring method to activate monitoring of ants (Agosti et al., 2000). There have been many studies that have used ants as an indicator species for various environmental changes (e.g. changes in habitats). Oddly enough, studies on the influence of climate changes with ants are rare: only results of research on changes in the distribution of harmful ants that emerged as a global challenge were reported.