A new species of Metron Godman, 1900 (Lepidoptera, Hesperiidae) from the western Amazon, with a unique hindwing color pattern in Hesperiina, its phylogenetic placement, and an illustrated key for the genus.

Metron mentor Dolibaina, O. Mielke & Casagrande, sp. nov.

An overview of the Brazilian Atlantic Forest species of Pachythone Bates (Lepidoptera: Riodinidae), with the description of a new species and an updated checklist of Pachythonina.

The taxonomy of the Brazilian Atlantic Forest endemic species belonging to the Neotropical metalmark genus Pachythone Bates, 1868 is revised. A new endemic species is described, Pachythone gagarini Dolibaina & Dias, sp. nov.

A new species of Vehilius Godman, 1900 (Lepidoptera, Hesperiidae, Hesperiinae) endemic to the Caatinga, northeastern Brazil: taxonomy, biology and behavior.

A new species belonging to the genus Vehilius Godman, 1900, Vehilius jabre Medeiros, Souza & Kerpel sp. nov., endemic to the Caatinga biome, northeastern Brazil, is here described based on data from adult and immature stages.

A review of the South American metalmark genus Alesa Doubleday, 1847 (Lepidoptera: Riodinidae: Eurybiini) with the description of two new species.

The taxonomy of the South American metalmark butterflies of the genus Alesa Doubleday, 1847 is reviewed. A new taxonomic arrangement for Alesa is supported after the analysis of about 600 specimens, including the recognition of two new species, described herein, A. juliae sp.

Taxonomic notes on Neotropical Hesperiidae (Lepidoptera).

Genomic sequencing (or morphology when indicated) and analysis of Hesperiidae that includes a number of primary type specimens reveals inconsistencies between the phylogenetic trees and the current classification that are resolved here. The following taxonomic changes are proposed. Oeonus Godman, 1900, stat.

A review of the Neotropical skipper genus Sodalia Evans, 1955 (Lepidoptera: Hesperiidae: Hesperiinae) with the description of a new species.

The Neotropical skipper genus Sodalia Evans, 1955 and its respective species are revised. Sodalia includes five species: S. sodalis (Butler, 1877) (type species), S.

Taxonomic review of the "Probetoriformes" species group of Symmachia Hübner, [1819] (Lepidoptera: Riodinidae), with the description of two new species from the Brazilian Atlantic Forest.

The "Probetoriformes" species group of Symmachia Hübner, [1819] proposed by Stichel (1910; 1930) is redefined based on morphological evidence, and the species herein included in the group are revised. Two new species from the Brazilian Atlantic Forest are described: S. atlantica Dias, Dolibaina Mielke sp.

Taxonomy of five neglected South American species of Dargida Walker (Lepidoptera: Noctuidae).

The taxonomy of five South American species of Dargida Walker currently allocated in Leucania Ochsenheimer (four species) and in Lasionycta Aurivillius (one species) is revised. Leucania roseilinea (Köhler, 1947), Leucania phaeoneura Hampson, 1913, Leucania mocoides Dognin, 1897, Leucania alboradiata (Hampson, 1905) and Lasionycta radiata (Köhler, 1966), are here combined with the genus Dargida Walker for the first time (comb. nov.

Taxonomic revision of the genus Panca Evans, 1955 (Hesperiidae: Hesperiinae: Hesperiini: Moncina) with the description of two new species.

The South American genus Panca Evans, 1955 and its respective species are revised. Previous to this study, the genus included solely its type species, Lerodea subpunctuli Hayward, 1934, until Panca moseri Dolibaina, Carneiro O. Mielke, 2017 was described recently.

Taxonomy of the rivorum species-group of Leucania Ochsenheimer, 1816 (Lepidoptera: Noctuidae).

The rivorum species-group of the genus Leucania (Noctuidae: Noctuinae: Leucaniini) is circumscribed and taxonomically revised, with the inclusion of three species. New taxonomic hypotheses were achieved through the morphological analysis of about 250 specimens allied to the type material of L. rivorum Guenée, 1852; L.

Two new Andean species of Alychna Grishin, 2019 (Hesperiidae, Hesperiinae, Hesperiini, Moncina) from Bolivia and Peru.

Two new species of Alychna Grishin, 2019, Alychna chulumani Medeiros, Dolibaina O. Mielke sp. nov.

First records of Leucania rawlinsi Adams and L. senescens Möschler (Lepidoptera: Noctuidae) in Brazil: redescription, potential association with Bt maize, larval parasitoids, and spatial and temporal distribution.

Every year the area of transgenic maize planting in Brazil expands, however, our knowledge of the fauna of herbivorous insects associated with this genetically modified crop is restricted. In this work we report for the first time the occurrence of Leucania rawlinsi Adams, 2001 and L. senescens (Möschler, 1890) (Lepidoptera: Noctuidae) in Brazil with larvae feeding on Bt and non-Bt maize silk, as well as their braconid and tachinid larval parasitoids.

Taxonomic revision of Artines Godman, 1901 (Hesperiidae: Hesperiinae: Moncini) with the description of nine new species.

The genus Artines Godman, 1901 and its respective species are revised. The results shows that Artines consists of 15 species distributed from Mexico to Bolivia, Paraguay, southern Brazil and northern Argentina. Nine new species are described: Artines panama Medeiros Carneiro sp.

Taxonomic revision of the genus Tarmia Lindsey, 1925 stat. rev. (Hesperiidae: Hesperiinae: Hesperiini: Moncina) with the description of a new species from the Andes.

The genus Tarmia Lindsey, 1925, long considered a junior synonym of Phanes Godman, 1901, is here revised and its status is revalidated based on morphological evidence. Two Andean species are included in Tarmia: the type species, T. monastica Lindsey, 1925 comb.

Hidden in plain sight: a morphological study revealing three new species of the skipper genus Drephalys Watson, 1893 (Lepidoptera: Hesperiidae) from Brazil.

Three new species of Drephalys Watson, 1893 from Brazil are described as follows: D. dracarys Madruga, Siewert, Mielke Dolibaina, sp. n.

A new species of Wahydra from Ecuador (Hesperiidae, Hesperiinae, Anthoptini).

Recent taxonomic studies on the genus Wahydra Steinhauser, 1991, have described five new species in the past two years, from high elevations in the Andes Mountains. A markedly distinct species of Wahydra is herein described and illustrated based on a single male specimen from Ecuadorian Andes, Wahydra graslieae A. Warren, Carneiro Dolibaina, sp.

Taxonomy of Rufocumbre gen. nov., a new Moncini skipper genus (Lepidoptera: Hesperiidae: Hesperiinae).

Rufocumbre gen. nov. (type species: Rufocumbre celioi sp.

Monotypic no longer: a new species of Evans (Lepidoptera: Hesperiidae: Hesperiinae: Moncini) from South America.

A new species belonging to the previously monotypic genus Panca Evans, 1955, P. moseri Dolibaina, Carneiro & O. Mielke sp.

Mesene Doubleday (Lepidoptera: Riodinidae) from Parque Nacional da Serra do Divisor, Acre, Brazil, with taxonomic notes and the description of a new species.

The species of Mesene Doubleday, 1847 collected at the Parque Nacional da Serra do Divisor, Acre, Brazil (PNSD) are listed and supplemented by taxonomic and behavioral notes. In total, 30 specimens were collected, representing seven species including one new: M. monostigma monostigma (Erichson, [1849]), M.

Two new species of Euptychia Hübner, 1818 from the upper Amazon basin (Lepidoptera, Nymphalidae, Satyrinae).

Two new species of Euptychia Hübner, 1818 are described from the upper Amazon basin: Euptychia attenboroughi Neild, Nakahara, Fratello & Le Crom, sp. n. (type locality: Amazonas, Venezuela), and Euptychia sophiae Zacca, Nakahara, Dolibaina & Dias, sp.

Argyrogrammana Strand (Lepidoptera: Riodinidae) from Parque Nacional da Serra do Divisor, Acre, Brazil, with the description of four new species.

The species of Argyrogrammana Strand, 1932 collected at the Parque Nacional da Serra do Divisor, Acre, Brazil (PNSD) are listed and detailed with behavioral notes. In total, 17 species were recorded, including 13 new records for Brazil (marked with an asterisk): A. alstonii (Smart, 1979)*, A.

Description of two new species of Pheles Herrich-Schäffer, [1853] and notes on the taxonomic position of two species hitherto included in the genus (Riodinidae: Riodininae).

Two new species of Pheles Herrich-Schäffer, [1853], Pheles plaumanni Dolibaina & Dias sp. nov. and Pheles obscura C.

A new species of Cogia from Oaxaca, Mexico (Lepidoptera: Hesperiidae: Eudaminae).

A new species of Cogia A. Butler, 1870, is described from two localities ranging from 1470 to 2000 m elevation in the Sierra Madre del Sur of Oaxaca, Mexico; it occurs in cloud forest habitats and appears to be endemic to Mexico. Cogia buena, n.

Taxonomic notes on some species of Euselasia Hübner, [1819] from the "Uriiformes" group, with the description of the immature stages of Euselasia satyroides Lathy, 1926, stat. rev. (Lepidoptera: Riodinidae: Euselasiinae).

The specific status of Euselasia satyroides Lathy, 1926, stat. rev., currently recognized as a synonym of Eurygona modesta Hewitson, 1856, is reinstated, and its immature stages, reared on Pouteria salicifolia (Sapotaceae), are thoroughly described and illustrated.

New species and taxonomic notes on Anteros Hübner, [1819] and Ourocnemis Bethune-Baker, 1887 (Lepidoptera: Riodinidae).

Three new species of Anteros Hübner, [1819] from south and southeastern Brazil are described: A. aliceae Dias & Siewert, sp. nov.