Subgenus (Megayoldia) A. E. Verrill & K. J. Bush, 1897

(3-6-1-0-2-2-0-5-2-0-0-0-0)
Ref. Wagner, 1984 p 48

thraciaeformais (D. H. Storer, 1838)
(3-6-1-0-2-2-0-5-2-1-0-0-0)
Broad Yoldia
Ref. Abbott & Dance, 1982 p 290 c