# The genome sequence of the Spanish Fritillary, Euphydryas desfontainii (Godart, 1819) (Lepidoptera: Nymphalidae)

## TL;DR

This paper presents the genome sequence of the Spanish Fritillary butterfly, including gene annotations and chromosomal scaffolding.

## Contribution

The study provides a high-quality genome assembly and gene annotation for Euphydryas desfontainii as part of a broader European butterfly genomics initiative.

## Key findings

- The genome assembly includes two haplotypes totaling 755.68 and 751.57 megabases.
- 14,303 protein-coding genes were identified using Ensembl annotation.
- The mitochondrial genome was assembled with a length of 16.56 kilobases.

## Abstract

We present a genome assembly from a male specimen of
Euphydryas desfontainii (Spanish Fritillary; Arthropoda; Insecta; Lepidoptera; Nymphalidae). The assembly contains two haplotypes with total lengths of 755.68 megabases and 751.57 megabases. Most of haplotype 1 (99.77%) is scaffolded into 30 chromosomal pseudomolecules, including the Z sex chromosome. Haplotype 2 was assembled to scaffold level. The mitochondrial genome has also been assembled, with a length of 16.56 kilobases. Gene annotation of this assembly on Ensembl identified 14 303 protein-coding genes. This work is part of Project Psyche, a collaborative programme generating genomes for European butterflies and moths.