Predicting effects of climate change on the geographical distribution of true bugs (Heteroptera) in Korea using the Maxent model

True bugs (Heteroptera) are known as piercing-sucking insect pests to agricultural crops. Eysarcoris aeneus, and Leptocorisa chinensis damage gramineous crops, and Halyomorpha halys, Piezodours hybneri, and Riptortus pedestris cause harm to leguminous crops. Climate change can affect the distribution of these insect pests. In this study, we compared the current potential distribution of these species with the future by using Maxent model to examine the climate change effects on the potential distribution using a climatic suitability. Presence records were collected from scientific articles, specimen data and National Ecosystem Survey in Korea. To avoid sampling bias, spatial autocorrelations were measured by calculating Average Nearest Neighbor distance using ArcGIS 10.1. For habitat modelling with Maxent, 19 bioclimatic variables were created using DIVA-GIS, which are based on weather conditions recorded from 1981 to 2010. Current climate conditions recorded from 2001 to 2010, and RCP 8.5 scenario for the 2020s, 2060s, and 2090s were used to estimate the current and the future climatic suitabilities. Pearson correlation coefficient and selected climate variables were used to reduce multicollinearity. From the results, the future climatic suitability of R. pedestris was similar to the current. However, the future suitability of E. aeneus was decreased, the future suitabilities of H. halys, L. chinensis, and P. hybneri were increased.