Monstrillidae Dana, 1849
Monstrillopsis angustipes Isaac, 1974
Monstrillopsis angustripes Isaac, 1975
Monstrillopsis chilensis Suárez-Morales, Bello-Smith & Palma, 2006
Monstrillopsis ciqroi Suárez-Morales, 1993
Monstrillopsis dubia (T. Scott, 1904)
Monstrillopsis dubioides Suárez-Morales & Ivanenko, 2004
Monstrillopsis ferrarii Suárez-Morales & Ivanenko, 2004
Monstrillopsis filogranarum (Malaquin, 1901)
Monstrillopsis fosshageni Suárez-Morales & Dias, 2001
Monstrillopsis gracile (Gurney, 1927)
Monstrillopsis gracilis (Gurney, 1927)
Monstrillopsis igniterra Suárez-Morales, Ramírez & Derisio, 2008
Monstrillopsis patagonica Suárez-Morales, Ramírez & Derisio, 2008
Monstrillopsis reticulata (Davis, 1949)
Monstrillopsis sarsi Isaac, 1975
Monstrillopsis zernovi Dolgopol'skaya, 1948
Monstrillopsis zernowi Dolgopol'skaya, 1948
