Toxidium fleche is a species of beetle of the family Staphylinidae. This species is found in south-eastern Brazil (Minas Gerais).
Adults reach a length of about 1.90 mm and have a dark brown body.
Adults have been collected from an undetermined crust/resupinate fungus.
The species name is a French noun in apposition, meaning âÂÂarrowâÂÂ, due to the arrow-shaped sclerite of the internal sac.