Foi realizado um estudo sobre artrópodes que vivem em ninhos de Columba livia Gmelin 1789, ave conhecida como pombo urbano e que nidifica em construções humanas, com o intuito de inventariar as espécies de artrópodes associadas. Foram coletados 14 ninhos de C. livia em nove bairros da área urbana de Manaus os quais foram levados ao laboratótio e colocados em um extrator do tipo Berlese-Tulgren por 12 dias, para a captura dos artrópodes. Foram encontrados 10.323 artrópodes, pertencentes a 3 subfilos, 3 classes, 14 ordens e 33 famílias. Acari foi mais abundante com 7.879 indivíduos, sendo o gênero Caloglyphus Berlese, 1923, o mais representativo (75%). A maioria das espécies encontradas é detritívora. A diversidade de artrópodes foi menor em Manaus se comparada à registrada em trabalhos da região Paleártica, provavelmente por C. livia ser uma espécie exótica na fauna Neotropical.   Arthropods in the nests of Columba livia Gmelin 1789 (Aves, Columbidae) in the urban area of Manaus, Amazonas, Brazil. Abstract. The objective of this study was identify the arthropod fauna in nests of the urban pigeon, Columba livia Gmelin 1789 who build their nests in man-made buildings. Fourteen nests were collected in nine districts of the built up area of the city of Manaus. For twelve days, arthropods were extracted in a Berlese-Tulgren funnel. A total of 10.323 arthropods representing 3 subphyla, 3 classes, 14 orders and 33 families were detected. Acari was the most abundant group with 7879 individuals. Mites of the genus Caloglyphus Berlese, 1923, made up over 75 % of all arthropods collected. Most of the arthropods extracted are detrivorous and apterous. The diversity found in Manaus was lower than that reported for samples collected in the Palearctic Region, probably because C. livia is exotic in the Neotropical fauna. The introduction of this pigeon can be responsible for a major contact between some arthropods and humans.

O estudo objetivou registrar a ocorrência, flutuação populacional das espécies de coccinelídeos e delinear a distribuição geográfica (Coleoptera, Coccinellidae) associados as plantas cítricas no Estado do Rio de Janeiro. Foram visitados 11 municípios situados em duas regiões do Estado do Rio de Janeiro: Baixada Fluminense e Região das Baixadas Litorâneas (Região Citrícola). O período de estudo foi de janeiro de 2000 a junho de 2001. Os coccinelídeos foram observados, coletados, conservados e identificados. Desta forma 11 espécies foram observadas no Estado. Os municípios com maior ocorrência de espécies foi Seropédica e Araruama e com menor ocorrência foram São Pedro da Aldeia, Iguaba Grande, Tanguá e Itaboraí. A espécie que se verificou com maior distribuição foi Pentilia egena (Mulsant, 1850), presente em 10 municípios, e com menor distribuição foi Curinus coeruleus Mulsant 1850, presente em apenas um município. Quando avaliada a flutuação populacional, houve uma tendência na redução da população nos meses mais frios (inverno), sendo P. egena a espécie com maior média populacional (40%) e espécies dominantes juntamente com Azya luteipes Mulsant 1850. No período de estudo a diversidade de espécies foi considerada relativamente alta (α= 3,91) quando avaliada através do índice de Margalef e Shanon-Wiener (H'= 0,81), sendo considerada uma diversidade relativamente alta.   Occurrence and Distribution of Coccinelids (Coleoptera, Coccinellidae) Associates at the Citrus Plants in Rio de Janeiro State Abstract. This work aimed to register the occurrence, study the population fluctuation the ladybeetles species and to delineate the geographic distribution (Coleoptera, Coccinellidae) associated at citrus plants in Rio de Janeiro State. 11 districts situated in two regions of the Rio de Janeiro State were visited: "Baixada Fluminense" and "Região das Baixadas Litorâneas (Região Citrícola)". The study period was January 2000 to June 2001. The coccinellids was observed, collected, conserved, and identified. This way 11 species they were observed on State. The districts to larger species occurrence were Seropédica, and Araruama and to species lower was São Pedro da Aldeia, Iguaba Grande, Tanguá, Itaboraí, Natividade e Porciúncula. The species that it was verified in larger distribution were Pentilia egena (Mulsant, 1850), present in 10 districts, and with smaller distribution it was Curinus coeruleus Mulsant 1850, present in just only one district. When evaluated population fluctuation, there was a tendency in the reduction of the population in coldest (winter) moths, being P. egena the specie com average larger populational (40%) and dominant specie together with Azya luteipes Mulsant 1850. In study period the species diversity was high (α= 3.91) when evaluated through Margalef and Shanon-Wiener index's (H'=0.81), being considered a relatively high diversity.

The infraorder Tabanomorpha traditionally includes the families Tabanidae, Athericidae, Rhagionidae, and Vermileonidae. The new family Oreoleptidae was placed among the tabanomorphan, as well as some controversial groups as Austroleptidae and Spaniidae, but there is no agreement on the phylogenetic relationships of the groups considered as belonging to the infraorder. Here is presented the geographical distribution of the following tabanomorphan families: Rhagionidae, Vermileonidae, Athericidae, Austroleptidae and Oreoleptidae. Every historical biogeographical analysis depends on up-to-dated distributional information, and, hence, reliable lists of distribution are a starting point to a broad comprehension of the evolution in space.

A Reserva Florestal Adolpho Ducke (RFAD) é um fragmento de 10.000 hectares em conflito geográfico com a cidade de Manaus. O conhecimento da diversidade dos Ephemeroptera na RFAD é fundamental uma vez que estes organismos são elementos biológicos importantes; como importante fonte de alimento e, por seu potencial como indicadores das perturbações antropogênicas. Neste estudo teve-se como objetivo o levantamento da fauna de Leptophlebiidae (Ephemeroptera) das duas bacias hidrográficas, comparando a diversidade entre as bacias e entre os períodos seco e chuvoso. Coletou-se em 38 pontos dos igarapés das bacias Leste (Ipiranga, Uberê e Tinga) e a Oeste (Acará e Bolívia) da RFAD com rede entomológica aquática (rapiché). Para verificar diferenças na riqueza das duas bacias e, comparar a riqueza nos períodos seco e chuvoso foi feito o Índice de Riqueza de Jackknife. Foram obtidas 804 larvas de Leptophlebiidae sendo identificados 368 indivíduos e reconhecidos sete gêneros: Hagenulopsis Ulmer (35%; n=128); Thraulodes Ulmer (34%; n=124); Farrodes Peters (13%; n=48); Miroculis Edmunds Jr (12%; n=45); Hydrosmilodon Flowers & Dominguez (5%; n=19); Hermanella Needham & Murphy (0.8%; n=3), Microphlebia Savage & Peters (n=1). Este representa o primeiro registro de Hydrosmilodon, Hermanella e Microphlebia para a RFAD. Na comparação entre as bacias Leste e Oeste, o Índice de Riqueza de Jackknife não indicou diferença significativa na riqueza de gêneros. Hermanella e Hydrosmilodon não ocorreram na bacia Oeste e, Microphlebia não ocorreu na bacia Leste, no entanto estas ausências não representam diferença significativa na riqueza taxonômica das bacias. A comparação na riqueza de espécie de Leptophlebiidae considerando o período seco e chuvoso revelou uma diferença significativa entre os períodos. Cerca de 68% dos indivíduos foram coletados no período seco provavelmente porque neste período a água fica restrita ao canal do igarapé fornecendo substrato estável (vegetação marginal e folhiço) para a manutenção da fauna. No período chuvoso o substrato é carreado pelas enxurradas não sendo possível

Resumen. La taxonomía y sistemática de la subfamilia Triatominae (Heteroptera, Reduviidae) se basan principalmente en caracteres biométricos y morfológicos de las formas adultas y, en algunos casos, de las ninfas. La Morfometría Geométrica es capaz de descomponer la forma en sus componentes tamaño isométrico y conformación. En el presente trabajo se utilizó la Morfometría Geométrica como herramienta de análisis de la configuración geométrica que resulta de la unión de los extremos del borde corial y del collar (configuración borde corial-collar) de los huevos eclosionados de cinco especies del género Rhodnius Stal. Los huevos se observaron por Microscopía Electrónica de Barrido y las imágenes digitalizadas fueron analizadas morfogeométricamente. Estudiando el tamaño geométrico de la configuración borde corial-collar, se halló que no existen diferencias estadísticamente significativas entre las cinco especies de Triatominos. En cuanto a la conformación, se determinaron diferencias entre las especies al ser sometidas a un análisis discriminante. Se encontró además que la variación del tamaño contribuye a la variación en la conformación, es decir, efecto alométrico. Los resultados obtenidos indican que la conformación de la configuración geométrica “borde corial-collar” de los huevos de Rhodnius podría ser utilizada como herramienta taxonómica para este grupo.   Morfometria geométrica da borda corial e colarinho de ovos de cinco espécies do Gênero Rhodnius (Heteroptera Reduviidae, Triatominae). Resumo. A taxonomia e sistemática da subfamília Triatominae (Heteroptera Reduviidae) esta baseada principalmente em caracteres biométricos e morfológicos das formas adultas, e em alguns casos, das ninfas. A morfometria geométrica é capaz de descompor a forma em seus componentes, tamanho isométrico e conformação. No presente trabalho utilizou-se a morfometria geométrica como ferramenta de análise da configuração geométrica que resulta da união dos extremos da borda corial e “colarinho” (configuração borda corial-colarinho) dos ovos eclodidos de cinco espécies do gênero Rhodnius. Os ovos observaram-se por meio de Microscopia Eletrônica de Varredura (MEV) e as imagens digitais foram analisadas morfogeometricamente. Estudando o tamanho geométrico da configuração borda corial-colarinho, consiguiu-se que não existem diferenças estatisticamente significativas entre as cinco espécies de Triatomineos. Quanto à conformação, determinaram-se diferenças entre as espécies ao ser submetidas a uma análise discriminante. Além de isso encontrou-se que a variação do tamanho contribui à variação na conformação, ou seja, efeito alométrico. Os resultados obtidos indicam que a morfogeometria da borda corial e do “colarinho” dos ovos de Rhodnius poderia ser utilizada como uma ferramenta taxonômica para este grupo.   Geometric morphometrics of the chorial rim and the collar of the eggs of five species of the Rhodnius genus (Heteroptera, Reduviidae, Triatominae). Abstract. The taxonomy and systematics of the Triatominae subfamily are based primarily on the biometric and morphological characters of the adult forms, and in some cases of the nymphs. Geometric Morphometrics are capable of separating the form in its components size and shape. In this work Geometric Morphometrics were used as a tool for the analysis of the chorial rim and the collar of hatched eggs of five species of the Rhodnius genus. Collected eggs were observed by Scanning Electron Microscopy and the digitalized images were analyzed by Generalized Procrustes Analysis. By studying the isometric size of the chorial rim and the collar, no statistical significant differences were found among the five species of Rhodnius genus. A discriminant analysis showed statistical differences among the shapes of the chorial rim and the collar, indicating that the shape is a species specific character. An allometric effect was found. The results obtained indicate that the geometric morphometrics of the chorial rim and the collar of hatched Rhodnius eggs can be used as a taxonomic tool for this group.

Social wasps (Vespidae: Polistinae) are highly adaptable insects that exploit a wide range of locally and seasonally available resources. This study reports the first observation of social wasps foraging on noni fruit (Morinda citrifolia L.) in Northeast Brazil, specifically in the Caatinga biome. Noni, a pantropical fruit known for its environmental tolerance and nutritional content, including high water and protein levels. Seven species of social wasps were recorded foraging on noni in the rural area of Patos, Paraíba state, Brazil. These species included Polybia ignobilis, Polybia occidentalis, Polybia paulista, Polybia sericea, Brachygastra lechiguana, Protonectarina sylveirae, and Polistes canadensis. Observations revealed that the wasps foraged primarily on the carpel disc of the fruit, engaging in scraping behavior to extract juices and soft tissues. No activity was observed on ripe fruits, likely due to their strong odor. The findings highlight the ecological importance of noni fruits as a resource for social wasps, particularly in arid regions as Caatinga biome where such fruits provide essential nutrients.

This study was conducted in an urban fragment of Cerrado (savannah formation) in the municipality of Campo Grande, Mato Grosso do Sul (MS), Brazil. McPhail traps, with sugarcane extract, were used along one year with the goals to sampling ulidiids flies. As results were presented new occurrences for four genera and seven species of uliidids for MS. Besides sampled four species belongs from three genera previous known from MS. The fauna of uliidids from MS increasing in 140% and 100% the number of the species and genera, respectively. Actually, the fauna of ulidiids from MS is represented by 12 species into eight genera.

Forest fragments associated with agricultural areas are beneficial for maintaining species that act as natural biological controls. Lacewings are an example of organisms that contribute to this control, however, there is little information on the sampling methodology for this taxon, as well as its occurrence in olive cultivation, Olea europaea L. (Lamiales: Oleaceae). Therefore, the aim of this study was to report the richness of lacewings (Neuroptera: Chrysopidae) collected with attractant traps in an olive orchard, associated with fragments of mixed Atlantic Forest. The traps were baited with passion fruit juice at a rate of 200 mL per bottle. The traps were installed at Sítio Carpe Diem, in the Serra da Mantiqueira, municipality of Cambuí, southern Minas Gerais (-22.625000 and -46.148333) from September 2023 to January 2024. As a result, a total of 109 lacewing specimens from one subfamily, two tribes, six genera and 14 species were collected. The occurrence of this taxon in the area may reflect the biome in which the property is located, the high temperature and the fragment of native forest. The data obtained in this study suggests that the use of passion fruit bait is advantageous for sampling lacewings, as well as highlighting the importance of agroecological practices for the permanence of natural enemies in cultivated areas.

Abandoned nests of social wasps are used by various arthropods, however, there are no records of cockroaches. Therefore, the objective of this study is to report the occurrence of cockroaches in abandoned social wasp nests. The first record occurred in a Cerrado area, Brazil, where a nymph (Ectobiidae) of a cockroach (Cahita Hebard, 1922) was found in an abandoned social wasp nest. The second record involved three cockroach nymphs (Blattodea: Ectobiidae), found alongside an ant Camponotus sp. (Hymenoptera: Formicidae) in an abandoned nest located in a transition area between the Atlantic Forest and Cerrado biomes. Although the exact reason for their presence cannot be defined, it is possible that the cockroaches were foraging for food or shelter from the rain. This is the first record of cockroaches occupying abandoned social wasp nests and the first record of another insect species occupying an abandoned social wasp nest alongside ants. Given the presence of Blattaria in more than one nest and in different locations and biomes, it can be suggested that this occupation is not merely incidental. However, further studies are necessary to determine the frequency of cockroach use of abandoned nests and to better understand the importance of these nests as microhabitats for these insects.

Forensic entomology uses insects, particularly Diptera, as evidence in various forensic applications. Some species help estimate post-mortem intervals in criminal investigations, others indicate cases of neglect by signaling poor hygiene conditions, and some serve as bioindicators of environmental quality. Characterizing local fly species distributions is essential for forensic applications, such as post-mortem interval estimation. In Belo Horizonte, a city in Minas Gerais state, Brazil, only one prior study has been conducted, solely focusing on Calliphoridae species while overlooking other families, such as Fanniidae, Muscidae, and Sarcophagidae, which are highly relevant for forensic applications. To address this gap, we collected flies of potential forensic interest at the Ecological Station of "Universidade Federal de Minas Gerais" (EEco UFMG), using fresh beef as bait, during the warm and rainy season. A total of 4,612 flies were collected, with Calliphoridae (N = 3024; 65.5%), Fanniidae (N = 902; 19.5%), Sarcophagidae (N = 353; 8.0%), and Muscidae (N = 240; 5.0%), constituting 98.0% of the collected specimens. The remaining 2% (N = 93) of the specimens belong to 11 families. Thirty-nine species were identified, with Muscidae exhibiting the highest richness (15 species), followed by Sarcophagidae (10), Calliphoridae (9), and Fanniidae (4). Notably, six new geographic records for Minas Gerais state and three for Belo Horizonte city were documented within the Muscidae family. Checklists of fly species of potential forensic interest from unexplored locations, such as the EEco UFMG, contribute to the development of valuable databases for future applications in forensic entomology.