Blepharomastix cronanalis is a species of moth in the family Crambidae. It was described by William Schaus in 1924. It is found in Peru.[1]
The wingspan is about 22 mm. The wings are white with terminal fuscous-black points. The lines are fine and buffy brown. The forewing costal margin is suffused with buffy brown and there is an outcurved antemedial line followed by a broken ocellus in the cell at the subcosta. There is a line on the discocellular of the hindwings.[2]