Abstract
Rio Grande do Sul (RS) is the southernmost state in Brazil and includes areas within the Pampa and Atlantic Forest biomes. The semiaquatic bugs (Hemiptera, Heteroptera, Gerromorpha) from RS are poorly known, with only 14 previously recorded species. We carried out two expeditions in this state, in 2002 and 2019, across 19 municipalities. Here, we provide new records for 19 species, of which 13 are recorded for the first time from the state, five have their distributions expanded, and one is recorded again from a same locality previously reported in the literature. Furthermore, 13 species were collected for the first time in the Pampa biome and one in the Atlantic Forest.
Highlights
Gerromorpha (Hemiptera, Heteroptera), or semiaquatic bugs, comprise more than 2100 extant species divided among approximately 160 genera and eight families (Polhemus and Polhemus 2008; Moreira 2015)
We present here new records for 19 species based on material collected from understudied areas in Rio Grande do Sul, both in the Atlantic Forest and Pampa biomes
Our work increases to 27 the number of semiaquatic bug species recorded from Rio Grande do Sul (Table 1; Fig. 22)
Summary
Gerromorpha (Hemiptera, Heteroptera), or semiaquatic bugs, comprise more than 2100 extant species divided among approximately 160 genera and eight families (Polhemus and Polhemus 2008; Moreira 2015). Most representatives of this suborder have the ability to walk on the surface of the water (Andersen 1982; Schuh and Slater 1995). We present here new records for 19 species based on material collected from understudied areas in Rio Grande do Sul, both in the Atlantic Forest and Pampa biomes
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