Petalium bistriatumPetalium bistriatum is a species of beetle in the family Ptinidae. It is found in North America.SubspeciesThese four subspecies belong to the species Petalium bistriatum:Petalium bistriatum arizonense FallPetalium bistriatum bicolor FallPetalium bistriatum bistriatumPetalium bistriatum debile Fall