Abstract

Abstract: The Odonata Order comprises one of the largest groups of aquatic insects, 7,000 species are described worldwide, with approximately 860 species registered in Brazil, around 14% of the global fauna known to date. However, there are still great gaps in the knowledge of Odonata fauna in many areas of Brazil. This study aims to present the results of the survey of Odonata species sampled in three counties in the state of Amapá. The state is located in the north of the country, inserted in the Amazon Biome. Odonata were caught between January and December 2018, with 472 specimens being sampled, belonging to seven families, 36 genera and 53 species. In total, 27 of the species found during the study correspond to new records for the state of Amapá. Due to the lack of information on the diversity of the Odonata order in Amapá, the list of species presented should serve as input for new studies contributing to the knowledge of the order in the state.

Highlights

  • The Odonata order comprises the second largest group of aquatic insects (Djikstra et al 2014)

  • Different factors have been affecting Odonata populations; according to Clausnitzer et al (2009) one out of ten species of Odonata is threatened with extinction, among aquatic insects, dragonflies are one of the few organisms that have the conservation status evaluated in Brazil by ICMBIO and globally by IUCN

  • 472 specimens belonging to seven families, 36 genera and 53 species were sampled ( Table 2), with 27 of the species found during the study corresponding to new records for the state of Amapá

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Summary

Introduction

The Odonata order comprises the second largest group of aquatic insects (Djikstra et al 2014). The order comprises about 7,000 species (Kalkman et al 2008), the number of species of Odonata in the neotropical region is close to 1,800 (Von Ellenrieder 2009), in Brazil 860 species are known, representing about 14% of the global fauna (Pinto 2018), or approximately 50% of the neotropical species. Because of their close relationship with the aquatic environment, insects of the order Odonata are strongly affected by the physical and chemical changes in these environments, and some species of the order have environmental and ecological specificities for their occurrence (Nessimian et al 2008). Different factors have been affecting Odonata populations; according to Clausnitzer et al (2009) one out of ten species of Odonata is threatened with extinction, among aquatic insects, dragonflies are one of the few organisms that have the conservation status evaluated in Brazil by ICMBIO and globally by IUCN

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