Dytiscidae
(Dytiscus)
Gyrinidae
Gyretes (terminal proleg w/hooks)
Gyrinidae
(Dineutus)
Hydroscaphidae
(Hydroscapha)
Emildae
(Optioservus)
Elmidae
( Pharceonus)
Psephenidae
(Ectopria) Light (Psephenus ) Dark w/Filamentous gill
Eulichadidae
Stenocolus scutellaris (Filamentous gills)
Ptilodactylidae
(Anchycteis) (terminal gill, anal proleg at the end of abdomen)
Curculionidae
(Lissorhoptrus)
Hydraenidae
(Hydraena)
Helophoridae
(Helophorinae)
Hydrochidae
Hydraena
Hydrophilidae
(Hydrophilinae)
Hydrophilidae
Hydrochara (antennae, mandible and Max. Palp stipes)
Lampyridae
Scirtidae
Scirtidae
Lutrochidae
(Lutrochus) w/cuadal gill chamber and Lateral suture line, at the end of abdomen.
Chrysomellidae
Pyrhalta (rocky back)
Chrysomellidae
Donacia (Terminal spur)