Checklist of Odonata species from Serra of Itabaiana National Park, and an update and new records for the state of Sergipe, Brazil / Checklist das espécies de Odonata do Parque Nacional da Serra de Itabaiana, e uma atualização e novos registros para o estado de Sergipe, Brasil

Abstract Understanding species diversity and distribution cannot be overstated in the development of effective management and biological conservation strategies. Our goal was to address the knowledge gap regarding dragonfly diversity in the northeastern Atlantic Forest, specifically in the Serra of Itabaiana National Park in the state of Sergipe, Brazil. During our study, we recorded 40 species and 969 Odonata individuals across six families and 25 genera. This study contributes 27 new occurrence records of Odonata species in Sergipe, Brazil, highlighting the significance of preserving and protecting the habitats of this region. Our findings provide valuable information on the distribution of dragonfly species in the state of Sergipe and the Northeast region.

Resumo A compreensão da diversidade e distribuição das espécies é fundamental para o desenvolvimento de estratégias efetivas de manejo e conservação biológica. Nosso objetivo foi abordar a lacuna de conhecimento sobre a diversidade de libélulas na Mata Atlântica nordestina, especificamente na Serra do Parque Nacional de Itabaiana, no estado de Sergipe, Brasil. Durante nosso estudo, registramos 40 espécies e 969 indivíduos de Odonata em seis famílias e 25 gêneros. Este estudo contribui com 27 novos registros de ocorrência de espécies de Odonata em Sergipe, Brasil, destacando a importância de preservar e proteger os habitats desta região. Nossos resultados fornecem informações valiosas sobre a distribuição das espécies de libélulas no estado de Sergipe e na região Nordeste.

A new species of Dimeragrion Calvert, 1913 (Odonata: Zygoptera: Heteragrionidae) from Northwestern Brazil.

Dimeragrion Calvert, 1913 is a genus with five species, restricted to the Pantepui region. Here, we describe Dimeragrion baniwa sp. nov. (Holotype. ♂ (LABECO, N° 12276), BRAZIL, Amazonas, São Gabriel da Cachoeira, (0.017, -66.891, 81 m a.s.l.), first-order stream inside Terra Firme Forest, in lateral swamps: 29.xi.2021, C. C. Mendoza-Penagos & M. Gonçalves, leg.), the sixth species of the genus from 13 males and 3 females collected in the municipality of São Gabriel da Cachoeira in the Brazilian Amazon, located at the southern extreme of the Pantepui region. Additionally, we provide photographs of the diagnostic characters of the male and female, photographs of live specimens as well as information on their biology. Finally, identification keys are provided, as well as a distribution map of the species of the genus.

Argia koroivarum sp. nov. (Odonata: Coenagrionidae) from Minas Gerais state, Southeastern Brazil.

Argia koroivarum sp. nov. (BRAZIL, Minas Gerais state, São Roque de Minas, Parque Nacional Serra da Canastra, 9.iv.2019, (-20.2323, -46.6084, 1306m asl), D.S. Vilela, R. Guillermo, R. Koroiva leg., Laboratory of Ecological Studies on Ethology and Evolution (LESTES), Uberaba, Minas Gerais State, Brazil) is described, illustrated, and diagnosed based on specimens collected in Minas Gerais state, Brazil. The new species can be diagnosed from its congeners by the morphology of male ligula, dorsal branch of paraproct, and of female mesostigmal lobes.

A new species of Minagrion Santos, 1965 (Odonata: Coenagrionidae) from the Cerrado of Northern Minas Gerais state, Brazil.

Minagrion veredae sp. nov. (Holotype , BRAZIL (Z329), Minas Gerais state, Grande Serto Veredas National Park, 15.iv.2023, (156 S, 4548 W, 660 to 900m asl), P.S. Vital leg.) is described, illustrated and diagnosed based on specimens collected at the Grande Serto Veredas National Park. The new species inhabits palm swamp environments, Cerrado domain phytophysiognomy, as it is typical of other species of the genus. It can be diagnosed from its congeners mainly by the forcipate shape and large teeth of the cercus and the lanceolate shape of segment two of the genital ligula.

Odonata community in transition areas between Cerrado and Atlantic Forest biomes in south-central Minas Gerais, Brazil

Faunal inventories are essential for biota management and conservation, especially in areas with potential for the creation of conservation units. Inventories of insect taxa such as dragonflies and damselflies (Odonata), which perform several environmental services in aquatic and terrestrial ecosystems, are of great importance. In view of the above, this study aimed to update and expand the list of Odonata species in the Barroso region, Minas Gerais State, Brazil. This study was carried out in three areas of forest fragments in Atlantic Forest and Cerrado biomes in October 2020, December 2020, January 2021, and March 2021. The sampling effort was 8 hours per day during 20 days, totaling 140 sampling hours. A total of 43 Odonata species were recorded, which increased the richness of the study area from 57 to 76 species. The studied areas harbor rare and endangered species. However, since the last sampling in 2009, there has been a significant reduction in diversity in the Atlantic Forest fragment. In view of the changes that forest fragments are undergoing, we underscore the need to create a conservation unit, especially in Baú Forest.(AU)

Revealing the Odonatofauna of Northeastern Brazil: new Heteragrion Selys, 1862 (Odonata: Heteragrionidae) species from Bahia state.

Heteragrion roquei sp. nov. (Brazil, Bahia state, Municipality of Una, Fazenda Araruna, (-15.3146, -39.1621), 40 m, 19.ix.2019, M.E. Rodrigues leg., UESC) is described based on two males recently collected in Bahia state, Brazil. The new species is illustrated, diagnosed and compared with morphologically close congeners, being separated from them mainly by cercus characters, such as the medial portion and both ventrobasal / dorsobasal expansions.

The rediscovery of Machadagrion garbei (Santos, 1961) (Odonata: Coenagrionidae) with notes on the hitherto unknown female.

Machadagrion garbei (Santos, 1961) was only known by the male holotype from Vila Nova, Bahia state, Brazil, and one male from Junqueira, Alagoas state, Brazil, collected in 1963. Over 50 years of its original description we report its rediscovery with specimens collected in Barra do Jacupe, Camaari County, Bahia state, Brazil, and Serra de Itabaiana, Sergipe state, Brazil. We provide illustrations and diagnosis from both sexes, including the description of the female.

Heteragrion calafatiensis (Odonata: Heteragrionidae) sp. nov. from Northern Brazil.

The Neotropical genus Heteragrion Selys, 1862 is the second most speciose among the Neotropical Zygoptera. However, most of its species are poorly known regarding their biology, distribution, and taxonomy, especially those from undersampled areas like Northern Brazil. Here we describe Heteragrion calafatiensis sp. nov. from the coastal environments of the Brazilian Amazon of Par state (Holotype , Brazil, Par, municipality of Magalhes Barata, near the Marapanim River, (-0.863291, -47.668058, 20 m, 26.ix.2021), C.C. Mendoza-Penagos leg, in UFPA). This is the nineth Heteragrion species recorded for the Northern region of Brazil. The new species can be separated from congeners by cercal morphology and thoracic coloration pattern.

A new species of Progomphus Selys, 1854 (Odonata: Anisoptera: Gomphidae) from Minas Gerais state, Southeastern Brazil.

Progomphus teolitavius sp. nov. (Odonata: Anisoptera: Gomphidae) is described and diagnosed based on a specimen collected in a gallery forest of Cerrado from Barroso municipality, Minas Gerais state, Brazil (-21.2238, -43.9895, 1033 m, 30.iii.2021, G.S. Santos leg.). The new species can be distinguished from congeners by its enlarged basal externo-lateral dilatation of cerci (which bears large teeth), and epiproct morphology.

Psaironeura jeronimoi (Odonata: Zygoptera: Coenagrionidae) sp. nov. from the Brazilian Amazon rainforest, with a key for species of tenuissima group, and discussion on the significance of the genital ligula to the taxonomy of the group.

Psaironeura jeronimoi sp. nov. is described based on seven males (Holotype: ♂ (LABECO, N° 10002717), BRAZIL, Amazonas, Alto Maués Ecological Station, (-5.9852, -59.3182, 114 m asl, 12.v.2019) collected in the state of Amazonas (near Alto Maués Ecological Station) and Pará (municipality of Belterra). This new species fits into the tenuissima group but presents differences in color pattern and shape of the apex cerci. Main morphological characters are figured and compared with those of P. tenuissima (Selys, 1886) and P. bifurcata (Sjöstedt, 1918). Key to males and comments on genital ligula of the species of the group are provided. Finally, comments on the conservation status of the species are presented.

Perilestes jueni (Zygoptera: Perilestidae), new species from Amazonas State, Northern Brazil.

Perilestes jueni sp. nov. (Brazil, Amazonas State, São Gabriel da Cachoeira, Ponto 8 (0.165, -67.007, 92 m asl), 2.xii.2021, C.C. Mendoza-Penagos M. Silva-Gonçalves & S. Da Silva Ribeiro leg.) is described based on one male collected in a remote area of the Brazilian Amazon Forest. The new species is separated from congeners based on cercus morphology.

Odonata (Insecta) community in the Environmental Protection Area of the Machado River hydrographic basin, southern Minas Gerais State, Brazil

Only 8% of the approximately 120 conservation units in Minas Gerais State collect information on the order Odonata, which motivated this study. We aimed to survey communities of this insect group in the Environmental Protection Area of the Machado River hydrographic basin, southern Minas Gerais State, Brazil. For this purpose, 12 areas were sampled by active searching from September 2018 to March 2019. Representatives of 71 Odonata species belonging to 8 families were collected. Seven species were found exclusively in this conservation unit, and two species were newly recorded for the state, namely Erythrodiplax chromoptera (Borror, 1942) and Micrathyria venezuelae De Marmels, 1989. This study surveyed the fifth richest odonatofauna in Minas Gerais State, underscoring the importance of the studied area for conservation of Odonata communities and necessitating actions for decreasing environmental impacts on this biological patrimony.(AU)

Morphological description of the final instar larvae of Argia reclusa Selys, 1865 and Tigriagrion aurantinigrum Calvert, 1909 from Southeastern Brazil (Odonata: Coenagrionidae).

The final instar larvae of Argia reclusa Selys, 1865 and Tigriagrion aurantinigrum Calvert, 1909 are described, diagnosed and illustrated. The larvae of A. reclusa has a very prominent premental ligula, shared with a single species in Brazil, from which it can be separated by a combination of characters. The larvae of T. aurantinigrum is similar to most Oxyagrion in regard to prementum and lamellae shape, and differs from those taxa in palpal and premental setation and number of teeth on the labial palp. Both larvae were collected in a small stream of the Cerrado biome, where both species are common.

Leptagrion jeromei (Odonata: Coenagrionidae) spec. nov. from Brazil, with notes on L. andromache Hagen in Selys, 1876.

A new species of Leptagrion Selys, 1876 is described and named in honor to Dr. Jerome Constant: Leptagrion jeromei (Holotype: Brazil: Bahia, Jussari, RPPN Serra do Teimoso, Jequitiba tree (Cariniana legalis (Mart.) Kuntze, 1898) at 32 m, 10.v.2005, K.S. Furieri leg and deposited in FAAL). This species was confused for a long time with L. andromache Hagen in Selys, 1876 its closest congener. Diagnostic illustrations of L. andromache (lectotype and specimens collected at AmapBrazil) and L. jeromei spec. nov. are presented. We also present the northernmost record for L. andromache in Amap state, Northern Brazil.

Heteragrion lencionii (Odonata: Heteragrionidae) sp. nov. from Serra de Itabaiana National Park, Northeastern Brazil.

The Neotropical genus Heteragrion Selys, 1862 is one of the most speciose among Zygoptera. Notwithstanding, most of its species are poorly known, especially those from undersampled areas such as Northeastern Brazil. Here, we describe Heteragrion lencionii sp. nov., from protected areas of Sergipe state (Holotype ♂, Brazil, Sergipe, Areia Branca, Serra de Itabaiana National Park, -10.7484, -37.3390, 179 m, 7.xii.2020, A.B. Farias A.E. dos Santos leg., in UFS). This is only the second Heteragrion species discovered as new for the Northeastern region of Brazil, separated from other congeners by cercus morphology and thoracic coloration pattern.

Leptagrion itabaiana sp. nov. (Odonata: Coenagrionidae) from Serra de Itabaiana National Park, Sergipe state, Northeastern Brazil.

Leptagrion itabaiana sp. nov. (Brazil, Sergipe, Areia Branca, Serra de Itabaiana National Park, (10.7517 S, 37.3415 W, 179 m asl), 3.ii.2021, J.C. Santos leg.) is described, diagnosed, illustrated and compared with morphologically close congeners based on male specimens. The new species can be separated from other Leptagrion species mainly by cercus morphology.

Dragonflies and Damselflies in a region of the Triângulo Mineiro, Minas Gerais: checklist and taxonomic additions / Libélulas de uma região do Triângulo Mineiro, Minas Gerais: lista de espécies e adições taxonômicas

Abstract: Remaining freshwater systems are historically under threat mainly due to human activities such as agriculture and urbanization. The consequences of such activities are innumerous, and among them there is a decrease of suitable habitats for threatened fauna. In the Brazilian Cerrado, the odonatofauna of palm swamps and riparian forests are still poorly explored, a fact that difficult conservation efforts of the group. Thus, we performed an inventory in several urban and rural sites containing these phytophysiognomies in Uberlândia, Triângulo Mineiro region, western Minas Gerais state. In total, we found 101 Odonata species, seven families and 46 genera in the municipality, with 76 and 66 species, respectively, belonging to palm swamp and forest sites. From this diversity, eight species were first records in the state of Minas Gerais: Neuraeschna claviforcipata Martin, 1909, Phyllocycla cf. medusaBelle, 1988, Diastatops intensa Montgomery, 1940, Oligoclada pachystigma Karsch, 1890, O. xanthopleura Borror, 1931, Angelagrion nathaliaeLencioni, 2008, Telebasis sanguinalis Calvert, 1909 and Telebasis simulacrum (Calvert, 1909). We also sampled Erythrodiplax anaGuillermo-Ferreira & Vilela 2016, a species listed as endangered (EN) by the IUCN red list. Additionally, we include some taxonomic notes of Forcepsioneura machadorum females, a newly discovered species in the region. Our results contribute to the Odonata database in Brazil and highlights the importance inventories in poorly explored aquatic ecosystems.

Resumo: Os sistemas remanescentes de água doce estão historicamente ameaçados, principalmente devido às atividades humanas, como agricultura e urbanização. As consequências de tais atividades são inúmeras, e entre elas há a diminuição de habitats adequados para a fauna ameaçada. No cerrado brasileiro, a odonatofauna de veredas e matas ripárias ainda são pouco exploradas, fato que dificulta os esforços de conservação do grupo. Assim, realizamos um inventário em diversos pontos urbanos e rurais com essas fitofisionomias em Uberlândia, na região do Triângulo Mineiro, oeste de Minas Gerais. No total, foram encontradas 101 espécies de Odonata, sete famílias e 46 gêneros no município, com 76 e 66 espécies, respectivamente, pertencentes a pontos de veredas e de matas. Dessa diversidade, oito espécies foram os primeiros registros no estado de Minas Gerais: Neuraeschna claviforcipata Martin, 1909, Phyllocycla cf. medusa Belle, 1988, Diastatops intensa Montgomery, 1940, Oligoclada pachystigma Karsch, 1890, O. xanthopleura Borror, 1931, Angelagrion nathaliaeLencioni, 2008, Telebasis sanguinalis Calvert, 1909 e Telebasis simulacrum (Calvert, 1909). Nós também coletamos Erythrodiplax anaGuillermo-Ferreira & Vilela 2016, uma espécie listada como em perigo (EN) pela lista vermelha da IUCN. Além disso, incluímos algumas notas taxonômicas de fêmeas de Forcepsioneura machadorum, uma espécie recém-descoberta na região. Nossos resultados contribuem para o banco de dados Odonata no Brasil e destacam a importância dos inventários em ecossistemas aquáticos pouco explorados.

Checklist and contribution to the knowledge of the odonatofauna of Paraíba state, Brazil / Checklist e contribuição para o conhecimento da odonatofauna do Estado da Paraíba, Brasil

Abstract: We present the first listing of odonatan species (Insecta: Odonata) that occur in the state of Paraíba, Brazil. There are 49 species and 29 genera registered, making Paraíba the third in number of species among the Brazilian states of northeastern region. The families with the largest number of species were Libellulidae, with 31 species and 15 genera, followed by Coenagrionidae with 11 species and 7 genera. Interior regions of the state are under-sampled, which should still lead to an underestimated number of species. In addition, we present taxonomic notes of two species collected during our expeditions: males of Progomphus dorsopallidus Byers, 1934 and females of Macrothemis griseofrons Calvert, 1909. Here, we detail important characteristics and present figures to aid their morphological identifications.

Resumo: Apresentamos a primeira lista de espécies de libélulas (Insecta: Odonata) que ocorrem no estado da Paraíba, Brasil. Há 49 espécies e 29 gêneros registrados, tornando a Paraíba a terceira em número de espécies entre os estados brasileiros da região Nordeste. As famílias com maior número de espécies foram Libellulidae, com 31 espécies e 15 gêneros, seguido por Coenagrionidae com 11 espécies e 7 gêneros. As regiões do interior do estado estão sub amostradas, o que deve levar a um número subestimado de espécies. Além disso, apresentamos notas taxonômicas de duas espécies coletadas durante nossas expedições: machos de Progomphus dorsopallidus Byers, 1934 e fêmeas de Macrothemis griseofrons Calvert, 1909. Aqui, detalhamos características importantes e apresentamos figuras para auxiliar em suas identificações morfológicas.

Final instar larva of Acanthagrion truncatum Selys, 1876 (Zygoptera: Coenagrionidae).

Here we describe the final instar larvae of Acanthagrion truncatum Selys, 1876, the 16th described for the genus. We compare the diagnostic characters of A. truncatum with other species of the Group II. Although very similar to other Acanthagrion, the larvae of A. truncatum can be separated from other congeners from having the following character combination: cephalic lobes bulging and rounded, seven antennomeres, 2+1 or 2 premental setae, and nodus at 0.60-0.62 of total length of the lamella.

The female of Epipleoneura spatulata Rácenis, 1960 (Odonata: Protoneurinae).

Here we describe the hitherto unknown female of Epipleoneura spatulata Rácenis, 1960 and present a table of characters (all illustrated) to distinguish it from other known congeneric females. We suggest that the main diagnostic character of the female of E. spatulata is the shape of posterior margin of prothorax, which is flat medially with smoothly curved erect lateral projections.