show Abstracthide AbstractThe Mediteranean flour moth, Ephestia kuehniella, represents an early model in lepidopteran genetics later also exploited in sex chromosome research. While it used to be a major pest of dried food products, nowadays it is considered a factitious host used as a food source for a broad range of beneficial arthropods used in biological control. Here we generated Oxford Nanopore reads to study sex determination in E. kuehniella.