Kondratieff & Baumann 2009. A contribution to the knowledge of Sweltsa exquisita (Frison) and S. occidens (Frison) and description of a new species of Sweltsa from the northern Rocky Mountains, U.S.A. (Plecoptera: Chloroperlidae). Illiesia, 5(3), 9 March 2009: 20-29