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The Phycitinae comprise approximately 3500 described species in more than 550 genera (Beccaloni et al. 2003; Nuss et al. 2009). The subfamily occurs in all biogeographical regions except Antarctica, but it is poorly known outside the Holarctic biomes, and the number of species yet to be described is likely to exceed the number of species already named. The adults vary in size from very small to relatively large micro moths. The forewings are generally relatively narrow and elongate, and generally rather drab coloured; greyish-brownish in a variable pattern with white and black. But some are more brightly coloured with patterns of red, pink and yellow. A discal spot is often present, and many groups have a distinct white costal margin. The hind wings are broad, generally whitish without distinct markings. Most adults are crepuscular or nocturnal and are readily attracted to UV lights. They rest with the wings curled cigar-like around the body and the antennae pressed backwards flat along the body. The larvae are generally concealed feeders in a wide variety of plants or stored dry products. Many are serious pests, but others such as the Cactus-moth (Cactoblastis cactorum) are important biological control agents of invasive plants.