Cydalima diaphanalis

''Cydalima diaphanalis'' is a moth in the Crambidae family. It was described by Francis Walker in 1866. It is found in Burma, Indonesia , on the Solomon Islands and in Thailand and Australia, where it has been recorded from Queensland and South Australia.

The wings are white with a small black dot near the middle. The forewings have a brown costa and there are black dots on the margin near the wingtip.