<i><a href="https://en.wikipedia.org/wiki/Achaea_janata" class="extiw" title="w:Achaea janata">Achaea janata</a></i>, Castor Semi-Looper, is a <a href="https://en.wikipedia.org/wiki/Noctuidae" class="extiw" title="w:Noctuidae">Noctuidae</a> moth, the caterpillars of which are termed 'semi-loopers' due to their mode of locomotion and feed on Castor <i><a href="https://en.wikipedia.org/wiki/Ricinus_communis" class="extiw" title="w:Ricinus communis">Ricinus communis</a></i> and both <a href="https://en.wikipedia.org/wiki/Brassica" class="extiw" title="w:Brassica">Brassica</a> and <a href="https://en.wikipedia.org/wiki/Ficus" class="extiw" title="w:Ficus">Ficus</a> species.
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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.
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<a href="//commons.wikimedia.org/wiki/User:Jkadavoor" title="User:Jkadavoor">Jeevan Jose, Kerala, India</a></div>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>