Circumvitellatrema Dronen, Greiner, Ialeggio & Nolan, 2009

Dronen, Norman O. & Blend, Charles K., 2015, Updated keys to the genera in the subfamilies of Cyclocoelidae Stossich, 1902, including a reconsideration of species assignments, species keys and the proposal of a new genus in Szidatitreminae Dronen, 2007, Zootaxa 4053 (1), pp. 1-100 : 34

Key to the species of Circumvitellatrema Dronen, Greiner, Ialeggio & Nolan, 2009

1a. Eggs 137–146 µm x 68 –74 µm................................ C. momota Dronen, Greiner, Ialeggio & Nolan, 2009

1b. Eggs 130 µm x 64 µm........................................................... C. phasidi ( Stunkard, 1929)