[ref. ID; 1663]
Body sac-like, with a flat attachment disc on the ventral surface. Corona a large concave chamber. Usually on broad, flat leaves of aquatic plants. Body length up to 800 um long. Single rare species. (ref. ID; 1663)

[ref. ID; 1923]
Generally attached to flat leaves on aquatic plants. (ref. ID; 1923)

• Cupelopagis vorax Leydig, 1857 (ref. ID; 3688)
  Syn; Apsilus bipera Foulke, 1884 (ref. ID; 3688); Apsilus bucinedax Foulke, 1884 (ref. ID; 3688); Apsilus lentiformis Metschnikow, 1866 (ref. ID; 3688); Cupelopagis bipera de Beauchamp, 1912 (ref. ID; 3688); Cupelopagis bucinedax Forbes, 1882 (ref. ID; 3688); Cupelopagis bucinedax de Beauchamp, 1912 (ref. ID; 3688); Cupelopagis vorax de Beauchamp, 1913 (ref. ID; 3688); Dictyophora vorax Leidy, 1857 (ref. ID; 3688)
• Cupelopagis vorax (Leidy, 1857) (ref. ID; 1345, 2280, 2655, 2673, 2703, 2814, 2833, 2918)
  Syn; Apsilus bipera Foulke, 1884 (ref. ID; 1345, 2673); Apsilus bucinedax Foulke, 1884 (ref. ID; 1345); Apsilus lentiformis Metschikov, 1866 (ref. ID; 1345, 2673); Apsilus vorax Foulke, 1884 (ref. ID; 1345, 2673); Cupelopagis bipera de Beauchamp, 1912 (ref. ID; 1345); Cupelopagis bucinedax Forbes, 1882 (ref. ID; 1345, 2673); Cupelopagis bucinedax de Beauchamp, 1912 (ref. ID; 1345); Cupelopagis vorax de Beauchamp, 1912 (ref. ID; 1345); Dictyophora vorax Leidy, 1857 (ref. ID; 1345, 2280, 2673)