complete mitochondrial genome of  Nicrophorus (Nicrophorus) quadraticollis Portevin, 1903
DNA or RNA was extracted from the sample using an optimized protocol based on the sample type. After quality control, samples passing QC were used for library preparation. Libraries were prepared via random fragmentation and adapter ligation, or alternatively by tagmentation to streamline the process. Adapter-ligated fragments were PCR-amplified and gel-purified. Sequencing was performed using Illumina's Sequencing by Synthesis (SBS) technology following cluster generation via bridge amplification. Raw BCL data were converted to FASTQ format using Illuminas bcl2fastq tool for downstream analysis.