Dysoptus denticulatus is a species of moth in the family Arrhenophanidae. It is known only from Brazil, São Paulo, Boracéia Field Station, and Casa Grande.[1]
The length of the forewings is about 5 mm for males. Adults are on wing in February (based on one record).
The specific name is derived from the Latin denticulatus (with small teeth),[2] in reference to the denticulate apex of the saccular process in the male valva.