Description of the female of Heteragrion lencionii Vilela, Farias & Santos, 2021 (Odonata: Heteragrionidae), from Northeastern Brazil, with some ecological notes.

Group A of the genus Heteragrion Selys, 1862 comprises 34 species, of which 19 have complete descriptions of females. The aim of this study was to describe the female Heteragrion lencionii Vilela, Farias & Santos, 2021 based on three specimens collected at the Federal Institute of Sergipe (Brazil, Sergipe, São Cristóvão, -10.9198, -37.

The F-0 larva of Angelagrion nathaliae Lencioni, 2008 from Southern Minas Gerais state, Brazil (Odonata: Coenagrionidae).

In this study, we described the last instar larva of Angelagrion nathaliae Lencioni, 2008, the first one described for this genus, collected in Inconfidentes and Uberlândia municipalities, Minas Gerais state, Brazil. We compared the diagnostic characters of A. nathaliae with some species of Telebasis Selys, 1865.

The F-0 exuvia of Protoneura paucinervis Selys, 1886 (Zygoptera: Protoneurinae): description and diagnosis.

The F-0 exuvia of Protoneura paucinervis Selys, 1886 is described, illustrated, and diagnosed by comparison with the hitherto known Protoneura Selys in Sagra, 1857 larvae. The larvae of P. paucinervis can be distinguished from its congeners by the following combination of characters: palpal lobe squared bearing three strong teeth, 5 palpal setae, and nodus of lateral gills at 0.

Argia sertaneja sp. nov. (Odonata: Coenagrionidae) from Northern Minas Gerais state, Brazil.

Argia sertaneja sp. nov. (BRAZIL, Minas Gerais state, Chapada Gaúcha, Grande Sertão Veredas National Park, Vereda lodging (15.

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.

Taxonomic revision of the Neotropical genus Heteragrion Selys, 1862 (Zygoptera: Heteragrionidae): male morphology, new species and illustrated key.

In this study, we have comprehensively presented taxonomic information on all 62 known species of Heteragrion Selys, 1862, which includes illustrations, photographs, diagnostic characters, and a key to males. Our analysis is based on the examination of over 900 specimens from 19 different collections worldwide, encompassing the type material for at least 42 species. Furthermore, we have described a new species, Heteragrion corderoi sp.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Revision of the genus Minagrion Santos, 1965 (Odonata: Coenagrionidae).

Endemic to Brazil, the genus Minagrion Santos, 1965 is revised for the first time. The genus contains five species, and here we establish diagnostic characters, keys and drawings for both sexes. Furthermore, we propose the synonymy of M.

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.

Final instar larva of Franciscagrion longispinum Machado amp; Bedê, 2015 (Odonata: Coenagrionidae), an endemic species from the springs of the São Francisco river.

Franciscagrion longispinum Machado Bedê larvae were collected in the São Francisco river historical springs at the Serra da Canastra National Park, Brazil. Here, we describe and illustrate the final instar larvae of this rare and endemic species.

Heteragrion denisye sp. nov. (Odonata: Zygoptera: Heteragrionidae), a notable species from Serra da Canastra, Minas Gerais, Brazil.

Heteragrion denisye sp. nov. (Zygoptera: Heteragrionidae) is described and diagnosed on specimens collected near a Vereda (i.