Abstract
We collected two second instar larvae of Euthalia byakko in the suburbs of Xieng Khouang Province in central Laos in January 2009 and were the first to succeed in getting these larvae to emerge by rearing. As these larvae were collected on a leaf surface of Lithocarpus (Pasania) sp. along a central vein, we bred them using a leaf of Lithocarpus (Pasania) edulis as a substitute food plant and succeeded in getting adult female and male individuals to emerge.
