Syngamidae
Cyathostoma americanum Chapin, 1925
Cyathostoma bronchialis (Muhling, 1884)
Cyathostoma cacatua (Blanchard, 1849)
Cyathostoma lari Blanchard, 1849
Cyathostoma tadornae Chatin, 1874
Cyathostoma trifurcatum (Hovorka & Macko, 1959)
Cyathostoma variegatum (Creplin, 1849)