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Insect Orders ARUN KUMAR K M I Ph.D. Agricultural Entomology UAS, GKVK, Bengaluru
Insects  History of life on earth: 4 billion years  But 99 % of the life forms met with extinction  Insects appeared 350-400 million years ago  Dinosaurs appeared 210 million years ago  Human species appeared One million years ago
 Entomology (Entomon = Insect; Logos = Study) is the branch of science that deals with the study of insects.  The word insect is derived from insecare which means “to cut in to”  Phylum- Arthropoda – Biggest phylum of animal kingdom