Frechinia lutosalis is a moth in the family Crambidae. It was described by William Barnes and James Halliday McDunnough in 1914.[1] It is found in North America, where it has been recorded from Arizona, Colorado and New Mexico.[2]
The wingspan is about 20 mm. The forewings are olive green, suffused with white and with a white basal dash. The terminal area is paler than the median area. The hindwings are dark smoky with a darker terminal line.[3] Adults have been recorded on wing from June to August.