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red bug or redbug
any insect of the family Pyrrhocoridae (order Heteroptera), which contains more than 300 species. The red bug-a fairly common, gregarious, plant-feeding insect found mostly in the tropics and subtropics-is oval in shape and brightly coloured with red. It ranges in length from 8 to 18 mm (0.3 to 0.7 inch). Dimorphism, a condition in which two or more visibly different forms exist, may occur in some species (e.g., Pyrrhocoris apterus can be winged or wingless)