Checklist of Odonata (Insecta) in the state of Rio Grande do Sul, Brazil with seven new records

Abstract

The regional knowledge of species diversity and distribution is important to support conservation strategies for species and their habitats. The main goal of this work is to present a checklist of Odonata species in the state of Rio Grande do Sul, as well as their known locations in the municipalities. The preparation of the list was based in data gathered from collections of Museu de Ciências da Universidade do Vale do Taquari (UNIVATES), Laboratório de Ecologia e Evolução da Universidade do Vale do Taquari (UNIVATES), Museu de Ciências Naturais da Fundação Zoootânica, Museu de Zoologia da Universidade do Vale do Rio dos Sinos (UNISINOS) plus data extracted from 65 publications and the sites SpeciesLink, All Odonata and Puget Sound University. A total of 182 Odonata species were recorded, spanning nine families and 57 genera. The most representative family was Libellulidae (80 species) followed by Coenagrionidae (41 species) and seven species are new records for Rio Grande do Sul. The list of species presented here is a significant advance compared to previous counts for Rio Grande do Sul, however, our list is by no means a final one. Some regions of the state remain poorly explored, such as the border to Uruguay also in the northernmost part of the state. Several families remain poorly sampled, especially those that inhabit small forested streams and probably there are many specimens which are not cataloged and identified yet in scientific collections, both in the state and in the country.

Diversity of Odonata (Insecta) in Seasonal Deciduous Forest fragments in southern Brazil (state of Rio Grande do Sul), with a new record for the state and comments on the seasonal distribution of the species

“…In the state of Rio Grande do Sul (RS; area of ~282000 km 2 ), southernmost Brazil, many inventories and studies on the distribution of Odonata have been recently conducted (Renner et al 2015, Renner et al 2016a, b, Renner et al 2017. A recent compilation of the studies conducted in the state mentioned the occurrence of 182 species from nine families and 57 genera (Dalzochio et al 2018), representing ~21% of the known diversity of Odonata in Brazil (Pinto 2019). Nevertheless, as in the rest of the Brazilian territory, many areas of the state remain poorly investigated (Dalzochio et al 2018).…”

“…A recent compilation of the studies conducted in the state mentioned the occurrence of 182 species from nine families and 57 genera (Dalzochio et al 2018), representing ~21% of the known diversity of Odonata in Brazil (Pinto 2019). Nevertheless, as in the rest of the Brazilian territory, many areas of the state remain poorly investigated (Dalzochio et al 2018). The southernmost boundaries of the Atlantic Forest biome originally covered ~37% of the territory of RS (IBGE 2004).…”

“…Previous studies described that Atlantic Forest remnants in Southern Brazil hold a great diversity of various insect groups (Ferro & Teston 2009, Iserhard et al 2017. However, inventories of aquatic insects in the Atlantic Forest in RS are scarce, and, particularly for Odonata, large areas of the biome remain underrepresented regarding the knowledge of Odonata composition (Dalzochio et al 2018).…”

Dragonflies and damselflies (Odonata) from Córdoba and San Luis provinces, Argentina

“…These records are particularly important because they improve the knowledge of the geographic distribution of these Argentine endemics (Muzón andvon Ellenrieder 2001, von Ellenrieder andMuzón 2006). Moreover, we extend the western limit of the distribution of C. decurvata, a specialist aeshnid, which was previously recorded from only 2 provinces of Argentina (Córdoba and Entre Ríos) and southern Brazil (Dalzochio et al 2018). Another important species recorded from San Luis is P. erythropyga.…”

An overview of the ant fauna (Hymenoptera: Formicidae) of the state of Maranhão, Brazil

“…Understanding the distribution of species is essential to determine regional and global patterns of biodiversity (Dalzochio et al, 2018). In this sense, taxonomic inventories contribute to characterize areas of endemism, reveal taxonomic novelties and improve scientific collections (Moura et al, 2014;Freitas et al, 2017).…”