reported that eggs of several stored-product insects including T. castaneum, T. confusum, O. surinamensis, C. cephalonica, Lasioderma serricorne (F.) (cigarette beetle), Rhyzopertha dominica (F.) (lesser grain borer), Ephestia kuehniella Zeller (Mediterranean flour moth) and Plodia interpunctella (Hu¨ bner) (Indian meal moth) were fluorescent under long-wave (365 nm) UV excitation.