Xan

The Xan are monstrous creatures from Mayan myth, mentioned in the Popul Vuh. They resemble mosquitos with stingers large enough to kill a man. After killing their victims, they drain the bodies of blood.

Citations:

Bane, Theresa. Encyclopedia of Beasts and Monsters in Myth, Legend and Folklore. United States, McFarland, Incorporated, Publishers, 2016.

Zell-Ravenheart, Oberon, and Dekirk, Ash. A Wizard’s Bestiary: A Menagerie of Myth, Magic, and Mystery. United Kingdom, New Page Books, 2007.