Malacorhinus
Malacorhinus is a genus of skeletonizing leaf beetles in the family Chrysomelidae. There are about 30 described species in Malacorhinus. They are found in North America and the Neotropics.
In Australia, the species Malacorhinus irregularis was introduced to Northern Territory in 2000 as a biological control agent against the weed Mimosa pigra.