The Grass Bagworm (Brachycyttarus griseus) is a moth of the Psychidae family. It is native to south-east Asia, including Vietnam, Malaysia, Sabah and the Philippines, but has been introduced in Guam and Hawaii. It is abundant in lawns, but is not considered to be a significant pest. Larvae have also been found feeding on Paspalurn conjugaturn and Zoysia pungens, but also on various ornamental plants such as Canna lilies and Anthuriums, where it scrapes holes in the leaves.