Description of a New Species and Revised Key to the Hydrometra Latreille, 1797 (Hemiptera: Gerromorpha: Hydrometridae) Recorded from Brazil

Hydrometridae (Hemiptera: Heteroptera: Gerromorpha) is represented in Brazil by 17 species, belonging to six genera and three subfamilies: Veliometra Andersen, 1977 (Heterocleptinae); Bacillometra Esaki, 1927, Cephalometra Polhemus & Ferreira, 2018, Hydrometra Latreille, 1797, Spelaeometra Polhemus & Ferreira, 2018 (Hydrometrinae); and Limnobatodes Hussey, 1925 (Limnobatodinae). Hydrometra is the richest genus in the country, with 11 recorded species. Here, we describe H. perobas Cordeiro, Floriano & Moreira, sp. nov., collected in the buffer zone of Reserva Biológica das Perobas, a protected area within the Atlantic Forest biome, state of Paraná, southern Brazil. We also provide a revised key to the species of Hydrometra recorded from Brazil.