How to identify it?
Larva
Lower-instar larva red, head capsule black, body surface with white longitudinal lines and a few white hairs.
Pupa
Adult
A pair of antennae on the head. Pronotum densely tangerine pubescent. Fore wing with 4 dark-colored curved lines.
Photo By Smithsonian Environmental Research Center , used under CC-BY-2.0 /Cropped and compressed from original 
Scientific Classification
Phylum
Arthropods Class
Bugs Order
Moths and butterflies Family
Prominents Genus
Datana Species
Walnut caterpillar 
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