Diaphania infimalis is a moth in the family Crambidae. It was first described by Achille Guenée in 1854. It is found in Florida, Mexico, Guatemala, Belize, the Bahamas, Cuba, Jamaica, Panama, Venezuela and Bolivia.
The length of the forewings is 9âÂÂ10 mm for males and 9âÂÂ11 mm for females.
The larvae have been recorded feeding on Melothria grendula.