This project provides the genome assembly of the butterfly species Melinaea menophilus n. ssp. AW-2005. The assembly is provided by the Wellcome Sanger Institute Tree of Life Programme (https: //www.sanger.ac.uk/programme/tree-of-life/) in collaboration with Joana Meier at the University of Cambridge. The data under this project are openly available as part of the paper by Gauthier et al (in prep). For any queries, please contact Joana Meier (jm2276@cam.ac.uk) or Marianne Elias (marianne.elias@mnhn.fr). The DNA was extracted from a pupa raised by Melanie McClure in Tarapoto, Peru.