The Odonata of Argentina: state of knowledge and updated checklist

Abstract

An updated checklist of the 282 species of Odonata known to occur in Argentina is presented along with distributional information by province and ecoregion. Ten new records for the country and 87 new provincial records are provided. At present, 17 species of Odonata are considered endemic to Argentina, and distribution maps for each of them are provided. Information on larvae and conservation status according to the IUCN Red List of Threatened species is also provided; there are still 98 larvae unknown and 169 species unassessed.

Odonata (Insecta) checklist in reserves in Campos y Malezales ecoregion in Misiones, with new distributional records

“…We conducted four surveys on each reserve, between 2014 and 2018, during spring and summer, between 9 and 16 h (Table I). The Odonata were province (Lozano et al, 2020). However, these values are higher on the region enclosed in the Selva Paranaense ecoregion (represented in Argentina only in Misiones province) where 170 species have been recorded, while Campos y Malezales ecoregion (represented in Argentina in Corrientes and Misiones province), presents 94 species (Lozano et al, 2020).…”

“…It represents 22% of the species cited in the province, in addition to new distributions records. Until the updated checklist recently published (Lozano et al, 2020), no species list has been developed specifically for this ecoregion, besides an inventory in one site of Corrientes province included within the Iberá wetlands area of influence (Muzón et al, 2008). Our work represents the first checklist of Odonata species for Campos y Malezales ecoregion of Misiones province.…”

“…The closest known record of this species (Dalzochio et al, 2018) is from the Pampa biome, in Rio Grande do Sul, a Brazilian state adjacent to our study site. Tholymis citrina, on the other hand, is known to be present in Santa Fe, Jujuy, Tucuman and Salta provinces (Lozano et al, 2020), so we have extended its distribution. Four species that were recently cited (Lozano et al, 2020) in the area were also collected: Telagrion longum Selys, Micrathyria pseudeximia Westfall, Nephepeltia berlai Santos, and Argentagrion ambiguum (Ris).…”

“…Tholymis citrina, on the other hand, is known to be present in Santa Fe, Jujuy, Tucuman and Salta provinces (Lozano et al, 2020), so we have extended its distribution. Four species that were recently cited (Lozano et al, 2020) in the area were also collected: Telagrion longum Selys, Micrathyria pseudeximia Westfall, Nephepeltia berlai Santos, and Argentagrion ambiguum (Ris). This highlights the poor knowledge of the area and the example of the dragonflies could be very likely extended to other insect orders.…”

“…The Odonata were province (Lozano et al, 2020). However, these values are higher on the region enclosed in the Selva Paranaense ecoregion (represented in Argentina only in Misiones province) where 170 species have been recorded, while Campos y Malezales ecoregion (represented in Argentina in Corrientes and Misiones province), presents 94 species (Lozano et al, 2020). The unequal distribution of species may be in part due to the higher biodiversity of the Selva Paranaense, but also to a different sampling effort regarding Odonata in Misiones, with the majority of the surveys historically dedicated to the forested sector, leaving the area of Campos y Malezales underrepresented.…”