"Achaea janata", Castor Semi-Looper, is a Noctuidae moth, the caterpillars of which are termed 'semi-loopers' due to their mode of locomotion and feed on Castor "Ricinus communis" and both Brassica and Ficus species. The caterpillars are black in colour with white head and have a red knob on a tail. In the last stages the body turns brown or bluish-grey and the tail becomes black as well with the belly and the legs becoming orange.