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adults feed agric agricultural aphids attack beetles best known bolls breeding buds cacao caterpillars cause cereals citrus coccids coconut cocoon coffee coloured common crop cucurbits damage defoliate develop diapause disease dry season East Eggs are laid feeders flies flowers fruit genera genus grain habit hatch host plant hundred eggs important pest infestation insects instars laid singly large numbers larvae larvae bore larvae feed Larval life lasts leaf legumes maize Malaya males Malvaceae mature larvae mealy-bug minor pests moths mouthparts natural control Noctuidae normally nymphs occurs oil palm oviposition ovipositor palms parasites parthenogenetic particularly pest of cotton predators probably produce pupae pupate Pupation takes place rice roots saliva seeds serious pest shoots silk soil sorghum southern Nigeria stem borer stored subfamilies suborder suck sugar cane surface temperate regions tissue tobacco trees tropics tunnel underside of leaves usually vector vegetable virus weevil West Africa wings