Early evidence of an archaeological dyed textile using scale-insects: The Cave of Skulls, Israel

The color red has held significant historical symbolism and meaning throughout history and can be produced from various sources, including plants and animals. Some of the most luxurious red dyes were derived from various species of scale insects, particularly those of the Coccoidae superfamily. Today, advanced analytical methods allow to trace the origins of dyes even after thousands of years, providing insights into the technological capabilities of the ancient world as well as past economic and social conditions. In our research on textiles discovered in the Cave of Skulls in the Judean Desert, we conducted dye analyses using High-Pressure Liquid Chromatography (HPLC) and identified one unique, red-dyed textile, which was dyed with scale insects. Our analysis enables to pinpoint the precise source of the red color in archaeological textiles down to the species level, and it can be determined with a high degree of certainty that the dye used was Kermes vermilio. Direct radiocarbon dating places this textile in the Middle Bronze Age (1954–1767 BCE), shedding light on the early use of scale-insect dyes in ancient textile production.