Ay, when he was not racked and harrowed by nightmares, he was either disturbed by the angels of his visions or the Succubi of his dreams.
"The Book of Khalid"
Ameen Rihani
Del Rio and Bodin, for instance, consider the incubi as masculine demons which couple with women and the Succubi as demons who consummate the carnal act with men.
"Là-bas"
J. K. Huysmans