Definition of flour moth in US English:

flour moth

(also Mediterranean flour moth)


  • A grayish-yellow moth, the caterpillar of which is a pest of flour and cereal products.

    Ephestia kuehniella, family Pyralidae

    • ‘Twice per week, predators were fed eggs of the flour moth, Ephestia kuehniella, and provided with bean pods as oviposition substrate and supply of moisture.’
    • ‘When the same bacteria are injected into the common flour moth Ephestia kuehniella, however, they simply kill the males.’
    • ‘Fujii et al. 2001 demonstrated that the Wolbachia causing feminization in the Asian corn borer, Ostrinia scapulalis, induced male killing when transferred to the Mediterranean flour moth, Ephestia kuehniella.’