Identification key to the Gerridae (Insecta: Heteroptera: Gerromorpha) from the Amazon River floodplain, Brazil, with new records for the Brazilian Amazon

Abstract

The Amazon River floodplain is one of the most important Amazonian ecosystems in terms of biodiversity, and the most productive Amazonian environment, occupying an area of more than 100,000 km 2 . It includes small tributaries, open water lakes, floating meadows and a great extension of seasonally flooded forests. Among the aquatic insect fauna in floodplains, several aquatic heteropteran species are present, but the knowledge on their distribution is scarce