Key to orders of South American aquatic insects
COLEOPTERA
Key to families of South American aquatic beetles (adults)
Key to families of South American aquatic beetles (larvae)
ADEPHAGA
Dytiscidae (adults)
Key to species of South American Hydrovatus Motschulsky, 1853
Key to genera of the tribe Laccophilini
Key to species of Laccomimus Toledo & Michat, 2015
Dytiscidae (larvae)
Key to larval instars of Dytiscidae
Key to instar III of South American genera
Key to subgenera of Megadytes Sharp, 1882
Key to known genera of Bidessini
Key to known species of Limbodessus Guignot, 1939
Key to instar III of the known species of Liodessus Guignot, 1939
Key to instar III of the known species of Paroster Sharp, 1882
Key to instars I and III of the known species of Rhantus Dejean, 1833
Key to species of Juan Fernández archipelago
Haliplidae (adults)
Key to Argentinean species of Haliplus Latreille, 1802
Gyrinidae (adults)
Key to Argentinean genera, subgenera and species
Gyrinidae (larvae)
Key to tribes of Gyrininae and genera of Dineutini
Key to Argentinean genera and subgenera
Hygrobiidae (larvae)
Key to instar III of the known species of Hygrobiidae
Noteridae (adults)
Noteridae (larvae)
POLYPHAGA
Hydrophiloidea (adults)
Key to South American families
Key to subfamilies of South American Hydrophilidae
Key to tribes of South American Hydrophilinae
Key to genera of South American Berosini
Key to genera of South American Anacaenini
Key to genera of South American Chaetarthriini
Key to genera of South American Laccobiini
Key to subtribes of South American Hydrophilini
Key to genera of South American Hydrophilina
Key to genera of South American Acidocerina
Key to genera of South American Sphaeridiinae with aquatic representatives
Hydrophiloidea (larvae)
Key to genera of South American Hydrophiloidea
Scirtidae (adults)
Key to Argentinean species of Pseudomicrocara Armstrong, 1953
Key to Argentinean species of Ora Clark, 1865
HETEROPTERA
Keys to families, genera and subgenera of South American aquatic and semiaquatic Heteroptera
Gerridae (adults)
Key to species of Argentinean Metrobates Uhler 1871
Key to known immature stages of Trepobates Uhler 1894
Key to Argentinean, Chilean and Paraguayan species (In: Mazzucconi, S. A. & Bachmann, A. O. (1993) Familia Gerridae (Heteroptera): estudio comparativo de las alas de las especies argentinas, chilenas y uruguayas. Revista de la Sociedad Entomológica Argentina 52(1-4): 87-99).
Key to species of Argentinean Rheumatobates Bergroth 1892 (In: Mazzucconi, S. A. (1999) Rheumatobates (Rheumatobates) minutus flavidus Drake et Harris en la Argentina (Insecta: Heteroptera: Gerridae). Neotrópica 45(113-114): 108).
Veliidae (larvae)
Key to known immature stages of Oiovelia Drake & Maldonado Capriles 1952 (In: Mazzucconi, S. A. & Bachmann, A. O. (1997) Notas sobre larvas de heterópteros acuáticos argentinos. Familia Veliidae: Oiovelia. Neotrópica 43(109-110): 57-71).
Corixidae (eggs)
Key to eggs of Argentinean Corixoidea
Notonectidae (adults)
Key to genera and subgenera of Argentinean Notonectidae
Key to species of Martarega White 1879