The collection sites for An. balabacensis used in this study.

There were 14 sampling sites, each denoted by a different number. Seven sites were located in Kudat district, two in Banggi Island, and one each at the other five study sites. The outline of the map and the elevation map were downloaded from open source websites: http://gadm.org/country and http://www.diva-gis.org/gdata respectively, the final map was created using QGIS software version 2.18.13.