Chilephotopsis Cambra and Quintero, a new genus of nocturnal Mutillidae, subfamily Sphaeropthalminae, is described and illustrated based on two new species from northern Chile, known from males only: Ch. aconcagua n. sp. and Ch. brothersi n. sp. The genus can be distinguished from other sphaeropthalmine genera by the deeply emarginate medial posterior margin of metasomal tergum seven and the highly modified paramere. A discussion of possible relationships with other nocturnal sphaeropthalmine genera from South America is presented.