Abstract
The Stag beetle (Coleoptera: Lucanidae) is a fascinating group, often considered one of the most primitive within the Scarabaeoidea. They are valuable models for studying beetle evolution. However, the lack of high-quality genomes hinders our understanding of the evolution and ecology of Lucanidae. In this study, we present a chromosome-level genome of Serrognathus titanus by combining PacBio HiFi long reads, Illumina short reads, and Hi-C data. The genome spans 384.07 Mb, with a scaffold N50 size of 75.81 Mb, and most contigs (97.45%, 374.30 Mb) were anchored into six chromosomes. Our BUSCO analysis of the assembly indicates a completeness of 97.6% (n = 1,367), with 92.8% single-copy BUSCOs and 4.8% duplicated BUSCOs identified. Additionally, we found that the genome contains 43.87% (168.50 Mb) repeat elements and identified 14,263 predicted protein-coding genes. The high-quality genome of S. titanus provides valuable genomic information for comprehending the evolution and ecology of Lucanidae.
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