Allidiostomatinae is a subfamily of beetles in the scarab beetle family, Scarabaeidae. It is distributed in southern South America. Of the ten species, seven are endemic to Argentina. Others can also be found in Chile and Peru. Little is known about the biology of these beetles. The subfamily was made up of the single genus Allidiostoma until 2009, when a second was erected for the new species Parallidiostoma tricornum. Genera and species include: Allidiostoma Allidiostoma bosqui Allidiostoma halffteri Allidiostoma hirtum Allidiostoma landbecki Allidiostoma monrosmuntanolae Allidiostoma ramosae Allidiostoma rufum Allidiostoma simplicifrons Allidiostoma strobeli Parallidiostoma Parallidiostoma tricornum References External links Allidiostoma. Tree of Life Web Project. Scarabaeidae Taxa named by Gilbert John Arrow