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The stored grain pest beetles are economically important as they disturb the human product directly. Beetle Platynotus belli. Belonging to Tenebrionidae is rapidly spreading insect and destroys the stored product in larger areas.Platynotus belli is a black stout ground beetles belongs to family tenebrionidae, order coleoptera & commonly called as 'Pengul'. It is a stored grain pest, abundantly found is stores & granaries. The life cycle of P. belli complete with 4 stages of development i.e. egg, larva, pupa and adult. Both the larval and adult forms are harmful & destroys the stored...