User blog comment:Xilinoc/Ch. 646 - The Second Eye/@comment-1338810-20151009065514/@comment-26091912-20151009082356

Shunsui was referring to Starrk when he said 'Arrancar'. It's easy to misconstrue because of the way the translators wrote it.

Also, Lille called himself a Quincy in this chapter, so no, he's not an Arrancar.