DNA Barcoding in Insects

DNA barcoding has become an invaluable tool in modern taxonomy and is proving exclusively useful for identifying species as well as uncovering hidden diversity. The barcoding method primarily relies on analyzing standardized gene regions, such as COI, for animals that show enough interspecific variability while remaining conserved within species. These barcode regions can frequently be amplified and sequenced from very small or degraded samples, making the technique highly accessible and practical. Once the particular section of DNA is sequenced, it can be compared to reference libraries to determine species’ identity. The utility of DNA barcoding extends across several disciplines, including biodiversity assessments, invasive species detection, tracking of disease vectors, agricultural pest surveillance, and ecosystem monitoring. This chapter examines various primary applications of DNA barcoding in hexapods, highlighting its increasing importance in entomological research and practical applications.