Lymantria xylina (casuarina moth or casuarina tussock moth) is a moth in the family Erebidae. It is found in Japan, Taiwan and China (Fujian, Guangdon). It is a very important forest pest in Taiwan, with outbreaks occurring every five to 10 years. The larvae feed on a wide range of host plants, including over 65 species of broadleaf trees At least one virus is being investigated as a possible biopesticide.