Which specialty IPA is characterized by its addition of rye for flavor?

The specialty IPA that is characterized by the addition of rye for flavor is typically associated with what is commonly referred to as a "Rye IPA." Rye adds a distinct spice and complexity to the flavor profile, which can enhance the hop character of the beer. It provides a slightly spicy, earthy quality that can balance the bitterness of the hops and add depth to the malt profile.

While some of the other styles listed can include various malt types, they do not necessarily emphasize rye as a key component. For instance, Black IPAs primarily focus on dark malts that contribute roasted notes, Red IPAs leverage caramel malts for sweetness and red color, and Brown IPAs emphasize a British-style malt character along with hop flavor. However, the defining characteristic of a Rye IPA lies in its use of rye malt, making it a distinctive entry within the broader category of specialty IPAs.