New records of semiaquatic bugs (Hemiptera, Heteroptera, Gerromorpha) from the Caatinga biome, Brazil

Semiaquatic bugs (Hemiptera, Heteroptera, Gerromorpha) are small to mid-sized insects, currently represented by more than 2,100 known species distributed on all continents, except Antarctica. So far, 244 species have been recorded from Brazil, but only 63 from the Northeast Region of the country. The relatively small number of species in this region is related to the virtual lack of knowledge on the fauna of the Caatinga, a biome that is distributed essentially throughout this region. We present here new records for 28 species based on material collected in four federal conservation units of the Caatinga biome: Aiuaba Ecological Station (Ceara state), Chapada Diamantina National Park (Bahia state), Catimbau National Park (Pernambuco state), and Serra das Confus Ões National Park (Piaui state). Moreover, several species are recorded for the first time from at least one of these states: 11 from Bahia, 10 from Ceara, two from Pernambuco, and eight from Piaui.