# The genome sequence of the Red-underwing Skipper, Spialia sertorius (Hoffmannsegg, 1804) (Lepidoptera: Hesperiidae)

## TL;DR

This paper presents the genome sequence of the Red-underwing Skipper butterfly, including detailed assemblies of its chromosomes and mitochondrial DNA.

## Contribution

The study provides a high-quality genome assembly with two haplotypes and chromosomal pseudomolecules for Spialia sertorius.

## Key findings

- The genome assembly includes two haplotypes with lengths of 364.57 and 323.91 megabases.
- Haplotype 1 is scaffolded into 32 chromosomal pseudomolecules, including sex chromosomes W and Z.
- The mitochondrial genome is assembled with a length of 15.34 kilobases.

## Abstract

We present a genome assembly from a female specimen of
Spialia sertorius (Red-underwing Skipper; Arthropoda; Insecta; Lepidoptera; Hesperiidae). The assembly contains two haplotypes with total lengths of 364.57 megabases and 323.91 megabases. Most of haplotype 1 (99.92%) is scaffolded into 32 chromosomal pseudomolecules, including the W and Z sex chromosomes. Haplotype 2 was assembled to scaffold level. The mitochondrial genome has also been assembled, with a length of 15.34 kilobases.