Subgenus (Leptothyropsis) W. P. Woodring, 1928
(5-4-1-3-2-12-3-4-6-0-0-0-0) Ref. Abbott, 1974 p 61 Lindner, 1977 p 39 Vaught, 1989 p 12 philipiana (W. H. Dall, 1889) [T] (5-4-1-3-2-12-3-4-6-1-0-0-0) Ref. Abbott, 1974 p 61 d
(5-4-1-3-2-12-3-4-6-0-0-0-0) Ref. Abbott, 1974 p 61 Lindner, 1977 p 39 Vaught, 1989 p 12
philipiana (W. H. Dall, 1889) [T] (5-4-1-3-2-12-3-4-6-1-0-0-0) Ref. Abbott, 1974 p 61 d