Sylph

Sylphs are Winter Fae. They were among Mab's troops in Summer Knight.

In the Series
In Summer Knight, during the war between Summer and Winter Courts, Harry led his group of Werewolves and Changlings around the battlefield, in an attempt to stop Maeve at the Stone Table.

Among the Winter troops behind Winter's battle lines, were Sylphs crouched over a mound of bloody, stinking carrion squabbling like vultures.

Description
They had blood all over their faces, breasts and dragonfly wings.