The genome sequence of the Short-tailed Blue, <i>Cupido argiades</i> (Pallas, 1771) (Lepidoptera: Lycaenidae)

We present a genome assembly from a female specimen of <i>Cupido argiades</i> (Short-tailed Blue; Arthropoda; Insecta; Lepidoptera; Lycaenidae). The assembly contains two haplotypes with total lengths of 445.87 megabases and 384.46 megabases. Most of haplotype 1 (99.85%) is scaffolded into 25 chromosomal pseudomolecules, including the W, Z ₁, and Z ₂ sex chromosomes. Haplotype 2 was assembled to scaffold level. The mitochondrial genome has also been assembled, with a length of 15.41 kilobases. This work is part of Project Psyche, a collaborative programme generating genomes for European butterflies and moths.