Checklist of the dipterofauna (Insecta) from Roraima, Brazil, with special reference to the Brazilian Ecological Station of Maracá

Roraima is a Brazilian state located in the northern portion of the Amazon basin, with few studies regarding its biodiversity. The Ecological Station of Maracá (Brazil, state of Roraima) harbors the third largest Brazilian pluvial island and is composed of a transitional landscape of savanna and Amazon rainforest components. Despite its ecological importance and strategic localization, few studies covered the dipterofauna of this locality. An updated checklist addressing 41 families of true flies (Diptera) occurring in Roraima is presented based on the literature and the specimens collected during a field expedition that occurred in 2015. This checklist brings several improvements such as new records of 165 taxa to the state of Roraima, 29 taxa to Brazil, and 259 morphotypes, mostly likely representing undescribed species.(AU)

Taxonomic revision of the Neotropical Lauxaniidae genus Neopachycerina Malloch, 1933 (Diptera: Schizophora), with description of a new species

A systematic review of the Neotropical Lauxaniidae genus Neopachycerina Malloch, 1933 is presented. The genus is characterized mainly based on some features of the head, like the anterior pair of fronto-orbital setae conspicuously shorter than posterior one and rather close to them; face with a distinct elevation between antennal bases; antenna slightly elongate, first flagellomere tapered to tip and about three times as long as its basal width, arista thickened by dense black short hairs both above and below, with some longer outstanding hairs on upper side basally. Although some authors have grouped it with some other genera based on chaetotaxy of the head, it was considered closer to Parapachycerina Stuckenberg. Other authors, on the other hand, noted very important differences in the male terminalia, shape of the syntergosternite 7+8 and phallic complex, stressing a view that there are many convergent similarities in unrelated Old and New World lauxaniid genera. This shows that there is some conflicting evidence about the position of Neopachycerina within the Lauxaniidae, but a precise affiliation of Neopachycerina to any genus or group of genera still depends on a global cladistic analysis of the Lauxaniidae genera. In the present paper, Neopachycerina nigra sp. nov., from Argentina, is described and N. aristata Malloch, 1933 is redescribed, with illustrations of both species.

Taxonomic revision of the Neotropical Lauxaniidae genus Neopachycerina Malloch, 1933 (Diptera: Schizophora), with description of a new species

A systematic review of the Neotropical Lauxaniidae genus Neopachycerina Malloch, 1933 is presented. The genus is characterized mainly based on some features of the head, like the anterior pair of fronto-orbital setae conspicuously shorter than posterior one and rather close to them; face with a distinct elevation between antennal bases; antenna slightly elongate, first flagellomere tapered to tip and about three times as long as its basal width, arista thickened by dense black short hairs both above and below, with some longer outstanding hairs on upper side basally. Although some authors have grouped it with some other genera based on chaetotaxy of the head, it was considered closer to Parapachycerina Stuckenberg. Other authors, on the other hand, noted very important differences in the male terminalia, shape of the syntergosternite 7+8 and phallic complex, stressing a view that there are many convergent similarities in unrelated Old and New World lauxaniid genera. This shows that there is some conflicting evidence about the position of Neopachycerina within the Lauxaniidae, but a precise affiliation of Neopachycerina to any genus or group of genera still depends on a global cladistic analysis of the Lauxaniidae genera. In the present paper, Neopachycerina nigra sp. nov., from Argentina, is described and N. aristata Malloch, 1933 is redescribed, with illustrations of both species.(AU)

Checklist das espécies de Lauxaniidae (Insecta, Diptera) do estado do Mato Grosso do Sul / Checklist of the species of Lauxaniidae (Insecta, Diptera) from the state of Mato Grosso do Sul

Lauxaniidae is one of the largest Diptera Schizophora families, worldwide in distribution, very common in tropical areas. The family comprises about 1,550 species. Adults may be small to moderately large (2-11 mm), varied in color patterns, often with marks, spots, bands, or reticulating patterns. Larval lauxaniids are widely documented as saprophages, feeding in a diverse array of decaying plant matter, and even feeding in flower heads. Adults are fungal grazers on leaves. The Brazilian fauna of lauxaniids comprises at the moment 74 species of which 8 have been recorded from the state of Mato Grosso do Sul.(AU)

Lauxaniidae é uma das maiores famílias de Diptera Schizophora, com distribuição mundial, muito abundante nas áreas tropicais. A família está composta por cerca de 1.550 espécies. Os adultos apresentam o corpo pequeno a relativamente grande (2-11 mm), com coloração variada, muitas vezes com marcas, manchas, listras ou padrões reticulados. As larvas são conhecidas como saprófagas, alimentando-se em uma variedade de matéria vegetal em decomposição e mesmo em capítulos de flores. Adultos são raspadores de fungos em folhas. A fauna brasileira de Lauxaniidae compreende, até o momento, 74 espécies das quais 8 possuem registro assinalado para o estado do Mato Grosso do Sul.(AU)

Checklist das espécies de Lauxaniidae (Insecta, Diptera) do estado do Mato Grosso do Sul

ABSTRACT Lauxaniidae is one of the largest Diptera Schizophora families, worldwide in distribution, very common in tropical areas. The family comprises about 1,550 species. Adults may be small to moderately large (2-11 mm), varied in color patterns, often with marks, spots, bands, or reticulating patterns. Larval lauxaniids are widely documented as saprophages, feeding in a diverse array of decaying plant matter, and even feeding in flower heads. Adults are fungal grazers on leaves. The Brazilian fauna of lauxaniids comprises at the moment 74 species of which 8 have been recorded from the state of Mato Grosso do Sul.

RESUMO Lauxaniidae é uma das maiores famílias de Diptera Schizophora, com distribuição mundial, muito abundante nas áreas tropicais. A família está composta por cerca de 1.550 espécies. Os adultos apresentam o corpo pequeno a relativamente grande (2-11 mm), com coloração variada, muitas vezes com marcas, manchas, listras ou padrões reticulados. As larvas são conhecidas como saprófagas, alimentando-se em uma variedade de matéria vegetal em decomposição e mesmo em capítulos de flores. Adultos são raspadores de fungos em folhas. A fauna brasileira de Lauxaniidae compreende, até o momento, 74 espécies das quais 8 possuem registro assinalado para o estado do Mato Grosso do Sul.

Checklist das espécies de Lauxaniidae (Insecta, Diptera) do estado do Mato Grosso do Sul / Checklist of the species of Lauxaniidae (Insecta, Diptera) from the state of Mato Grosso do Sul

Lauxaniidae is one of the largest Diptera Schizophora families, worldwide in distribution, very common in tropical areas. The family comprises about 1,550 species. Adults may be small to moderately large (2-11 mm), varied in color patterns, often with marks, spots, bands, or reticulating patterns. Larval lauxaniids are widely documented as saprophages, feeding in a diverse array of decaying plant matter, and even feeding in flower heads. Adults are fungal grazers on leaves. The Brazilian fauna of lauxaniids comprises at the moment 74 species of which 8 have been recorded from the state of Mato Grosso do Sul.

Lauxaniidae é uma das maiores famílias de Diptera Schizophora, com distribuição mundial, muito abundante nas áreas tropicais. A família está composta por cerca de 1.550 espécies. Os adultos apresentam o corpo pequeno a relativamente grande (2-11 mm), com coloração variada, muitas vezes com marcas, manchas, listras ou padrões reticulados. As larvas são conhecidas como saprófagas, alimentando-se em uma variedade de matéria vegetal em decomposição e mesmo em capítulos de flores. Adultos são raspadores de fungos em folhas. A fauna brasileira de Lauxaniidae compreende, até o momento, 74 espécies das quais 8 possuem registro assinalado para o estado do Mato Grosso do Sul.

Four new Neotropical species of Trigonometopus Macquart, 1835 (Diptera, Lauxaniidae)

The genus Trigonometopus Macquart (1835) currently includes 13 species, found in most biogeographic regions, being absent from the Afrotropical and Australian Regions. The genus included six known Neotropical species and four new species are herein added to the genus: T. assisensis sp. nov., T. boraceiensis sp. nov., T. lourdesae sp. nov., and T. mariae sp. nov., the first two from the State of São Paulo, the other two respectively from the states of Mato Grosso do Sul and Santa Catarina. A key for the exclusively Neotropical species of the genus is provided.

O gênero Trigonometopus Macquart (1835) atualmente inclui 13 espécies e é encontrado em quase todas as regiões biogeográficas, estando ausente nas Regiões Afrotropical e Australiana. Na Região Neotropical, está composto por seis espécies. Neste trabalho, são descritas quatro novas espécies de Trigonometopus da região Neotropical: T. assisensis sp. nov., T. boraceiensis sp. nov., T. lourdesae sp. nov.; e T. mariae sp. nov., as duas primeiras do Estado de São Paulo e as outras duas respectivamente dos Estados do Mato Grosso do Sul e de Santa Catarina. Uma chave para as espécies exclusivamente neotropicais do gênero é fornecida.

Four new Neotropical species of Trigonometopus Macquart, 1835 (Diptera, Lauxaniidae)

The genus Trigonometopus Macquart (1835) currently includes 13 species, found in most biogeographic regions, being absent from the Afrotropical and Australian Regions. The genus included six known Neotropical species and four new species are herein added to the genus: T. assisensis sp. nov., T. boraceiensis sp. nov., T. lourdesae sp. nov., and T. mariae sp. nov., the first two from the State of São Paulo, the other two respectively from the states of Mato Grosso do Sul and Santa Catarina. A key for the exclusively Neotropical species of the genus is provided.(AU)

O gênero Trigonometopus Macquart (1835) atualmente inclui 13 espécies e é encontrado em quase todas as regiões biogeográficas, estando ausente nas Regiões Afrotropical e Australiana. Na Região Neotropical, está composto por seis espécies. Neste trabalho, são descritas quatro novas espécies de Trigonometopus da região Neotropical: T. assisensis sp. nov., T. boraceiensis sp. nov., T. lourdesae sp. nov.; e T. mariae sp. nov., as duas primeiras do Estado de São Paulo e as outras duas respectivamente dos Estados do Mato Grosso do Sul e de Santa Catarina. Uma chave para as espécies exclusivamente neotropicais do gênero é fornecida.(AU)