Abstract
We present a genome assembly from a male specimen of Sympetrum sanguineum (Ruddy Darter; Arthropoda; Insecta; Odonata; Libellulidae). The haplotype-resolved assembly contains two haplotypes with total lengths of 1,500.53 megabases and 1,304.05 megabases. Most of haplotype 1 is scaffolded into 13 chromosomal pseudomolecules, including the X sex chromosome, while haplotype 2 is scaffolded into 12 autosomes.