This project collects the sequencing data and assemblies generated for Quercusia quercus, common name purple hairstreak. The assembly is provided by the Wellcome Sanger Institute Tree of Life Programme (https://www.sanger.ac.uk/programme/tree-of-life/). The data under this project are made available subject to the Tree of Life Open Data Release Policy (https://www.darwintreeoflife.org/project-resources/).