Abstract Popilius gibbosus (Burmeister, 1847) was known only from localities in the Cordillera Oriental of the northern Andes in Colombia and Venezuela and the southern section in Colombia between 1,350-3,000 m. Herein, we provide the first record for Bolivia at low elevations (< 1,000 m), thus extending the geographic and altitudinal range of this species. Information about characters not yet used and the first description of the aedeagus are provided, accompanied with figures of those characters that facilitate the identification of the species. An identification key for Popilius species in Bolivia and a P. gibbosus distribution map are also provided.

Abstract Cratomorphus Motschulsky, 1853 includes 38 species restricted to the Neotropical region. Based on adult males from Mexico, Cratomorphus leoneli sp. nov. is herein described from the states of Oaxaca, Campeche and Chiapas. We place the new species in Cratomorphus’ group IV, which includes species with the posterior border of sternite VIII medially produced. The new species can be distinguished from other species of the group IV by the clypeus subquadrate, posterior margin of pygidium bisinuate and posterior margin of sternite VIII with an apically obtuse median projection. Illustrations of habiti and diagnostic traits are provided, along with an identification key and a distribution map for the group IV species.

Resumen Cratomorphus Motschulsky, 1853 incluye 38 especies restringidas a la región Neotropical. Con base en machos adultos de México, se describe Cratomorphus leoneli sp. nov., distribuida en los estados de Oaxaca, Campeche y Chiapas. Incluimos a la nueva especie en el grupo IV de Cratomorphus, que incluye especies con el borde posterior del esternito VIII proyectada medialmente. La nueva especie se puede distinguir de otras del grupo IV por el clípeo subcuadrado, pygidium con margen posterior bisinuado y esternito VIII con un margen posterior con una proyección mediana apicalmente obtusa. Se proporcionan ilustraciones del hábito y caracteres diagnósticos, junto con una clave de identificación y un mapa de distribución de los machos de las especies del grupo IV.

Abstract Passalus Fabricius, 1792 is the largest genus of Passalidae and presents great diversity in South America, mainly in the Amazon region. Currently this complex and heterogeneous genus is subdivided into three subgenera: P. (Pertinax) Kaup, 1869, P. (Mitrorhinus) Kaup, 1871, and P. (Passalus). Herein, two new species of Passalus from the western region of the Brazilian Amazon, a diverse but poorly studied area, are described and illustrated. The new species Passalus (Pertinax) deuterocerus sp. nov. and Passalus (Passalus) cleidecostae sp. nov. are compared with similar species occurring in nearby regions. Also, the diagnostic characters used to define the subgenera and sections of Passalus are summarized.

Abstract The Neotropical ruteline genus Pelidnota MacLeay currently includes 194 species and subspecies with a few described preimaginal stages. Here we describe the pupa of Pelidnota granulata (Gory, 1834), provide illustrations, comparative notes on other known pupae of Rutelini and comments on its geographical distribution. The key to known pupae of Rutelini is updated.

ABSTRACT: Paxillus MacLeay, 1819 is a genus widely distributed throughout the Americas and currently holds sixteen species. Seven species are known in the Amazon. Herein Paxillus elatus n. sp. is described and illustrated based on eight males and four females collected in the Brazilian Amazonian states Acre, Amazonas and Rondônia.

RESUMEN: Paxillus MacLeay, 1819 es un género distribuido en toda América y actualmente tiene dieciséis especies. Siete especies son conocidas para la Amazonia. En el presente trabajo Paxillus elatus n. sp., es descrita e ilustrada basándose en ocho machos y cuatro hembras colectados en los estados brasileños Amazónicos: Acre, Amazonas y Rondônia.

RESUMO Alguns besouros atacam a madeira imediatamente após o abate da árvore, enquanto outros preferem a madeira em diferentes estágios de degradação. Nesta categoria estão inseridos os besouros da família Passalidae. O objetivo deste estudo foi avaliar a ocorrência de besouros dessa família em amostras provenientes de troncos de Scleronema micranthum, espécie florestal da Amazônia Central. As amostras ficaram expostas à biodegradação durante 24 meses no solo da floresta da Estação Experimental de Silvicultura Tropical do Instituto Nacional de Pesquisas da Amazônia, em Manaus, Amazonas, Brasil. Durante esse período, a cada dois meses, 15 amostras foram removidas da floresta para a coleta desses insetos e avaliação da infestação. Foi registrada a presença de seis espécies, todas da tribo Passalini: Passalus (Pertinax) latifrons, P. (Passalus) variiphyllus, P. (Pertinax) convexus, P. (Passalus) interstitialis, P. (Passalus) lanei e Paxillus leachi. Dentre as espécies, P. (Passalus) interstitialis foi a mais abundante, com 18 indivíduos; foi a primeira a infestar as amostras e foi registrada entre o oitavo e o vigésimo mês do experimento. A infestação ocorreu predominantemente na casca e alburno da madeira.

ABSTRACT Some beetles can attack the wood immediately after the tree is felled, but there are those that start their attack at different stages of wood degradation. Beetles of the family Passalidae belong to this latest category. The objective of this study was to assess the occurrence of beetles of this family in wood samples taken from trunks of Scleronema micranthum, a forest species from Central Amazon. The samples were exposed to biodegradation for 24 months on the forest ground of the Experimental Station of Tropical Silviculture of the National Institute for Amazonian Research, in Manaus, Amazon State, Brazil. During that period, 15 samples were removed from the experiment, every two months, for insect collection and evaluation of infestation. The presence of six species was recorded, all of them of the Passalini tribe: Passalus (Pertinax) latifrons, P. (Passalus) variiphyllus, P. (Pertinax) convexus, P. (Passalus) interstitialis, P. (Passalus) lanei, and Paxillus leachi. Among these species, P. (Passalus) interstitialis was the most abundant, with 18 individuals. This species was the first one to infest the samples and was found between the eighth and twentieth month of the experiment. The infestation occurred predominantly in the bark and sapwood.

Abstract: Passalus (Mitrorhinus) nodifer sp. nov., from the extreme west of the Brazilian Amazon in the state of Acre is described and illustrated. The new species can be recognized by the head with conspicuous and strong single secondary tubercle; frontal ridges straight and well-marked; mandibles with two apical teeth; aedeagus with parameres reduced with large and rounded apical margin and basal piece with a deep V-shaped notched in the medial region.

Resumen: Passalus (Mitrorhinus) nodifer sp. nov., del extremo occidental de la Amazonía brasileña en el estado de Acre se describe e ilustra. La nueva especie puede ser reconocida por la cabeza con el único tubérculo secundario conspicuo y fuerte; quillas frontales rectas y bien marcadas; mandíbulas con dos dientes apicales; edeago con parameros reducidos con margen apical grande y redondeada y pieza basal con una muesca profunda en forma de V en la región medial.

Na Amazônia brasileira, Cholini (Coleoptera, Curculionidae, Molytinae) é representada por 53 espécies, distribuídas em sete gêneros: Ameris Dejean, 1821; Cholus Germar, 1824; Homalinotus Sahlberg, 1823; Lobaspis Chevrolat, 1881; Odontoderes Sahlberg, 1823; Ozopherus Pascoe, 1872 e Rhinastus Schoenherr, 1825. Este trabalho documenta as espécies de Cholini depositadas na Coleção de Invertebrados do Instituto Nacional de Pesquisas da Amazônia, Manaus, Brasil, além de apresentar a distribuição geográfica e informações sobre a biologia dessas espécies. Foram identificados 186 espécimes de Cholini, pertencentes a 14 espécies (13 da Amazônia brasileira) e cinco gêneros (Cholus, Homalinotus, Odontoderes, Ozopherus e Rhinastus). Somente 24% das espécies de Cholini registradas para a Amazônia brasileira estão representadas na coleção do INPA, ressaltando a necessidade de um esforço de coleta sistemático baseado na informação biológica disponível. Foi ampliada a distribuição geográfica conhecida das seguintes espécies: Cholus granifer (Chevrolat, 1881) para Brasil; C. pantherinus (Olivier, 1790) para Manaus (Amazonas); Cholus parallelogrammus (Germar, 1824) para Piraquara (Paraná); Homalinotus depressus (Linnaeus, 1758) para lago Janauacá (Amazonas) e rio Tocantins (Pará); H. humeralis (Gyllenhal, 1836) para Novo Airão, Coari (Amazonas) e Porto Velho (Rondônia); H. nodipennis (Chevrolat, 1878) para Carauari, Lábrea (Amazonas) e Ariquemes (Rondônia); H. validus (Olivier, 1790) para rio Araguaia (Brasil), Manaus (Amazonas), rio Tocantins (Pará), Porto Velho e BR 364, Km 130 (Rondônia); Odontoderes carinatus (Guérin-Méneville, 1844) para Manaus (Amazonas); O. spinicollis (Boheman, 1836) para rio Uraricoera (Roraima) e Ozopherus muricatus Pascoe, 1872 para lago Janauacá (Amazonas). Homalinotus humeralis é associado pela primeira vez com a palmeira urucuri Attalea phalerata Mart. ex Spreng.

In Brazilian Amazonia, Cholini (Coleoptera, Curculionidae, Molytinae) is represented by 53 species distributed in seven genera: Ameris Dejean, 1821; Cholus Germar, 1824; Homalinotus Sahlberg, 1823; Lobaspis Chevrolat, 1881; Odontoderes Sahlberg, 1823; Ozopherus Pascoe, 1872 and Rhinastus Schoenherr, 1825. This work documents the species of Cholini housed in the Invertebrate Collection of the Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil and gives the geographical and biological data associated with them. A total of 186 Cholini specimens were identified as belonging to 14 species (13 from Brazilian Amazonia) and five genera (Cholus, Homalinotus, Odontoderes, Ozopherus and Rhinastus). Only 24% of the Cholini species reported from Brazilian Amazonia are actually represented in the INPA collection, underscoring the need for a more systematical collecting based on available biological information. The known geographical distribution was expanded for the following species: Cholus granifer (Chevrolat, 1881) for Brazil; C. pantherinus (Olivier, 1790) for Manaus (Amazonas); Cholus parallelogrammus (Germar, 1824) for Piraquara (Paraná); Homalinotus depressus (Linnaeus, 1758) for lago Janauacá (Amazonas) and rio Tocantins (Pará); H. humeralis (Gyllenhal, 1836) for Novo Airão, Coari (Amazonas) and Porto Velho (Rondônia); H. nodipennis (Chevrolat, 1878) for Carauari, Lábrea (Amazonas) and Ariquemes (Rondônia); H. validus (Olivier, 1790) for rio Araguaia (Brasil), Manaus (Amazonas), rio Tocantins (Pará), Porto Velho and BR 364, Km 130 (Rondônia); Odontoderes carinatus (Guérin-Méneville, 1844) for Manaus (Amazonas); O. spinicollis (Boheman, 1836) for rio Uraricoera (Roraima); and Ozopherus muricatus Pascoe, 1872 for lago Janauacá (Amazonas). Homalinotus humeralis is reported for the first time from "urucuri" palm, Attalea phalerata Mart. ex Spreng.

Paxillus é um gênero neotropical pertencente à subfamília Passalinae, distribuído do México até a Argentina. No Brasil são conhecidas cinco espécies desse gênero, a maioria delas apresentando um tubérculo central achatado sem ápice livre. Entretanto, uma dessas espécies, Paxillus macrocerus Reyes-Castillo & Fonseca, apresenta um padrão diferente, tendo em vista que possui um tubérculo central longo com o ápice completamente livre. O presente estudo descreve e ilustra outra espécie nova, a qual foi encontrada na Amazônia brasileira, que apresenta essa mesma característica.

Paxillus is a neotropical genus belonging to the subfamily Passalinae widespread from Mexico to Argentina. Brazil is known to harbor five species belonging to this genus with most of them presenting at head a flattened central tubercle lacking a free apex. However, one of these species, Paxillus macrocerus Reyes-Castillo & Fonseca, differs from that pattern by having a long central tubercle with a completely free apex. The present study describes and illustrates another new species, which has been found in the Brazilian Amazon, showing this same characteristic.

O cupuaçu (Theobroma grandiflorum Schumman), é uma planta frutífera nativa da Amazônia, com uma diversificação na entomofauna encontrada, registrando-se maior abundância na ordem Coleoptera. Em uma plantação nos arredores da cidade de Manaus usando-se métodos de coletas, manuais, com aplicação de inseticida (método de queda) e armadilhas de interceptação de vôo foram coletados durante 12 meses consecutivos, 1.212 exemplares de Coleoptera. Alguns aspectos em relação a fenologia e localização das plantas foram abordados. A maior abundância foi registrada em plantas localizadas em áreas de relevo plano expostas ao sol, com flores e sem frutos. Encontrou-se maior frequência nos meses correspondentes ao período menos chuvoso (de junho a novembro), registrando-se maior quantidade de exemplares no horário matutino. Foram identificadas 32 famílias e as mais abundantes foram Chrysomelidae 25,17%, Curculionidae 18,08%, (incluindo Scolytinae e Platypodinae), Slaphylinidae 17,57% e Coccinellidae 12,46%. Foram identificados indivíduos dos gêneros Palaminus (Staphylinidae), Phenrica, Asphaera, Colaspis, Homophoeta, Heilipus (Chrysomelidae), Desmobaris, Phitotribus, Comptocerus (Curculionidae) e das espécies Homophoeta aequinoctialis, Exora obsoleta, Spaethiella coccinea (Chrysomelidae), Colobothea hirtipes, Clorida curta, Compsibidion maronicum, Heíerachthes pelonioides (Cerambycidae) e Marshallius multisignatus (Curculionidae). Os indivíduos de Spaethiella coccinea foram observados alimentando-se das folhas, Desmobaris e Heilipus foram encontrados alimentando-se dos brotos das folhas e das flores sendo considerados pragas para mudas das plantas. A relação dos indivíduos do gênero Phitotribus com a planta ainda não é conhecida.

The cupuassu (Theobroma grandiflorum, Sterculiaceae) is a native Amazonian fruit tree that about its entomological informations had been demonstrated the highest insects diversity princi-pallyColeoptera. During in a period of 12 consecutive months, manual collections were realized using insecticide and flight interception traps in a private plantation of cupuassu in Manaus and 1.212 individuals of Coleoptera visitors of Theobroma grandiflorum were collected Some plants aspects phenologies were done. The most great abundance was registered in plants exposed to the sun, in plants with flowers and without fruits, and plants localized in level and steep areas. Seasonal differences were also considered, finding a greater frequency of samples in the months corresponding to the less rainy period (from June to November). The quantity of samples collected (and the families of Coleoptera) was correlated with the period of collection, the morning hours presenting a greater sample quantity. From the Coleoptera found visiting the cupuassu plants, 32 families were collected and identified, the most abundant of which were Chrysomelidae 25.17%, Curculionidae 18.08%, Staphylinidae 17,57%, Coccinellidae 12.46%. The species Homophoeta aequinoctialis, Exora obsoleta, Spaethiella coccinea (Chrysomelidae). Colobothea hirtipes, Clorida curta,Compsibidion maronicum, Heterachthes pelonioides (Cereambycidae) and Marshallius multisignatus (Curculionidae), were identified. The samples of Desmobaris and Heilipus were found on leaves spronts and flowers of the plants being considered pest of young cupuassu plants, (Phytotribus), however their relation with the plant is not know yet. The Spaethiella coccinea (Chrysomelidae, Hispinae) was observed and collected feeding on leaves of the cupuassu plant.

Spasalus ellanae, uma nova eepécie PASSALIDAE (COLEOPTERA) alto rio Negro, Amazonas, Brasil, é descrita e ilustrada.

Spasalus ellanae n. sp. from Negro river, Amazonas, Brazil, is described and illustrated.