Notonectidae, dorsal habitus of species found in this survey, male specimens A Buenoa amnigenus B B. femoralis C B. fuscipennis D B. koina E B. konta F B. mutabilis G B. pallipes H B. platycnemis I B. pseudomutabilis J B. salutis K B. tarsalis L B. unguis M Notonecta disturbata N Enitharoides brasiliensis O E. tricomerus P, Q Martarega bentoi R M. brasiliensis S M. membranacea. A–D, F–H, J–O, Q–R are macropterous specimens; E, I, P, S are brachypterous specimens. Scale bars: 1 mm, unless otherwise indicated.