Glaresis burmitica sp. nov., the first amber inclusion of Glaresidae is described and figured based on a well preserved adult from the Upper Cretaceous Burmese amber. Glaresis burmitica differs from all extant and extinct congeners by its small body size, non-grooved pronotum, teeth on protibial outer margin, and unmodified outer margins of meso- and metatibia. The discovery of Glaresis burmitica from the Late Cretaceous suggests that the extant genus Glaresis is an ancient lineage, and its external morphologies changed very little through a long geological time. Together with previous findings in the Lower Cretaceous of northeastern China, it also highlights the palaeodiversity of the peculiar family Glaresidae. (C) 2018 Elsevier Ltd. All rights reserved.