Winged Twilight (Purple)

Winged Twilights are flying humanoid Daedra. They can be found in service to Azura and Molag Bal. 

Source: uesp.net.

This model is used for purple Winged Twilights summoned by the Summon Winged Twilight, Summon Twilight Matriarch and Summon Twilight Tormentor skills available to all Sorcerers.