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Show 425,000 425000 , Kinds Kmds of Insects InsectsKnown InsectsKnown Known ; U OS . S . Has 81,000Of 81,000 81000 , Of 425 000 species of insects insectsknown insectsknown Insectsknown known to scientists of the world world81000 81 000 are found in m the Uruted United UnitedStates UnitedStates ' States says Collier Calher s Of these thesemore , I Imore more than 60 000 are neither harm harmful harmful harmful ful nor helpful to mankind mankindOf Of the remaining remammg species about about10 10 000 are injurious as they carry carrydIsease carrydisease carrydisease dIsease to humans and domestIc domestIcammals domesticanimals domesticanimals ammals animals or destroy crops , whIle whIlethe whilethe whilethe the other 10 000 are beneficial as asthey asthey asthey they prey on destructive insects insectscause , cause cross pollination pollmatlon of plants or orproduce orproduce orproduce produce useful substances such as asdyestuffs asdyestufls asdyestuffs dyestuffs dyestufls lac honey and silk |