Abstract
This research record chronologically organizes reports on insect species and ecology in East Kalimantan, Indonesia. The reports are mainly based on fieldworks conducted by the authors since the late 1990s. Brief annotation are added to each report. A list of 45 newly described insect species collected by the authors is shown with images of the 6 new species of Scarabaeidae and the 34 new species of Cerambycidae.