''Synemon laeta'' is a

moth Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyletic with respect to butterflies (s ...

in the

Castniidae Castniidae, or castniid moths, is a small family of moths with fewer than 200 species: The majority are Neotropical with some in Australia and a few in south-east Asia. These are medium-sized to very large moths, usually with drab, cryptically ma ...

family. It is found along the east coast of Queensland, Australia. The larvae feed on ''Lomandra longifolia''.Australian Insects
/ref> They feed inside the culm of the food plant at ground level.

References

Moths described in 1854 Castniidae {{Castniidae-stub