Pixie

Encyclopedia Entry:
Though they resemble fairies, pixies are a separate race of fey. They are said to be born from the spirits of dead children. Extremely fond of pranks, pixies delight in humiliating any human who enters their forest.

Pixies are similar to succubi in that they seek to collect the spirit energy of human men. They swoop down en masse on any man who losses his way in the forest, and use the entirety of their small bodies to extract the spirit energy through his semen.