AbstrActin Amazonia, nothing is known about the distribution of the invertebrates on a medium-spatial scale pattern. in a trail system of 64 km 2 at ducke reserve, we sampled 72 transects using the hand-sorting method and berlese-tullgren extraction. the reserve possesses ecosystems of "terra-firme" forest and the trail system represents a gradient of topographic soil factors and vegetation, avoiding categorizations. considering the abundance and diversity of pseudoscorpionida, we investigated the relation of the community to environmental factors tested (topography, clay percentage, litter, and soil ph), to the two major drainage basins of the reserve, and if these invertebrates can be used as biological indicators to monitor changes. We registered two species for the first time in the reserve, increasing the known diversity to 17 species. the lack of correlation with the predictor variables and the large home range, indicate that pseudoscorpions are not good biological indicators in the reserve. As the eastern and western watersheds are not separate management units for the community, our results show that they are generalist predators. in spite of our results and lack of knowledge concerning their biology, life history and taxonomy, pseudoscorpions are cosmopolitan and easy to find and measure. compared with previous studies in the reserve, they have a consistent pattern of abundance and diversity throughout the years showing the stability of the community which can be checked mainly by comparison with environmental changes that would occur in the reserve. An investigation on a medium-spatial scale pattern and over a long-term period including other habitats, and also other predictor variables, like humidity, the structure of the vegetation and canopy closure, will be necessary to reinforce the observed tendencies.Keywords: central Amazonia, soil arthropods, medium-spatial scale, biological indicator pseudoscorpionida. na Amazonia, nada é conhecido sobre o padrão de distribuição de invertebrados em escala meso-espacial. em um sistema de trilhas de 64 km 2 na reserva ducke, foram coletados invertebrados em 72 parcelas por meio de coleta manual e método de berlese-tullgren extraction. A reserva possui ecossistemas de florestas terra-firme e as trilhas representam um gradiente de topografia, fatores do solo e vegetação, * part of a master´s degree dissertation of the second author. 792 AguiAr, n. o., guAlberto, t. l. and frAnklin, e. [791][792][793][794][795][796][797][798][799][800][801][802] 2006 evitando categorizações. considerando a abundância e a diversidade de pseudoscorpionida, investigouse a relação da comunidade com os fatores ambientais (topografia, porcentagem de argila, serapilheira e ph do solo), com as duas bacias de drenagem (leste e oeste) da reserva, e se esses invertebrados podem ser usados como indicadores biológicos para monitorar mudanças. foram registradas duas espécies pela primeira vez na reserva, aumentando a diversidade para 17 espécies. A falta de correlação com as variáveis predit...

The tick fauna of Brazil is currently composed by 72 species. The state of Amazonas is the largest of Brazil, with an area of ≈ 19% of the Brazilian land. Besides its vast geographic area, only 19 tick species have been reported for Amazonas. Herein, lots containing ticks from the state of Amazonas were examined in three major tick collections from Brazil. A total of 5933 tick specimens were examined and recorded, comprising 2693 males, 1247 females, 1509 nymphs, and 484 larvae. These ticks were identified into the following 22 species: Amblyomma cajennense sensu lato, Amblyomma calcaratum, Amblyomma coelebs, Amblyomma dissimile, Amblyomma dubitatum, Amblyomma geayi, Amblyomma goeldii, Amblyomma humerale, Amblyomma latepunctatun, Amblyomma longirostre, Amblyomma naponense, Amblyomma oblongoguttatum, Amblyomma ovale, Amblyomma rotundatum, Amblyomma scalpturatum, Amblyomma varium, Dermacentor nitens, Haemaphysalis juxtakochi, Ixodes cf. Ixodes fuscipes, Ixodes luciae, Rhipicephalus microplus, Rhipicephalus sanguineus sensu lato. Ticks were collected from 17 (27.4%) out of the 62 municipalities that currently compose the state of Amazonas. The following four species are reported for the first time in the state of Amazonas: A. coelebs, A. dubitatum, H. juxtakochi, and Ixodes cf. I. fuscipes. The only tick species previously reported for Amazonas and not found in the present study is Amblyomma parvum. This study provides a great expansion of geographical and host records of ticks for the state of Amazonas, which is now considered to have a tick fauna composed by 23 species. It is noteworthy that we report 1391 Amblyomma nymphs that were identified to 13 different species.

RESUMOSão ÍÁÁtadah tu eòpécx.eó de u^ingZde.oò colztadaò na itha de Macaca e na ÒQAJUX de PacaAaÁjna, em RoíaÁnu. INTRODUÇÃOA relação das espécies dos esfingfdeos que ocorrem na Amazônia brasileira é ainda muito incompleta. A coleta desses lepidõpteros ficou restrita ã vizinhança das maiores cidades e quando mais distante, sempre junto às calhas dos grandes rios (Schreiber, 1978).0 objetivo principal deste trabalho e contribuir para um melhor conhecimento da fauna dessas mariposas na região.

RESUMO -Foi encontrada uma riqueza de 15 espécies de pseudoscorpiões, de 12 gêneros e 5 famílias (Chthoniidae, Geogarypidae, Olpiidae, Atemnidae e Chernetidae), habitando diferentes plantas da vegetação do sub-bosque, em floresta primária de terra firme, no alto rio Urucu, Coari, Amazonas, no período de 1991 a 1996. As plantas foram examinadas pelo método de "bateção". Apolpium aff. vastum foi à espécie mais freqüente e abundante sobre as plantas. Dentre os tipos de plantas avaliados, as maiores diversidades de espécies de pseudoscorpiões foram registradas nas pequenas palmeiras, tanto com fronde junto ao chão, como elevada acima do chão. A análise da composição das espécies que ocorreram sobre os diferentes tipos de plantas avaliadas foi realizada pelo "modo-Q", tendo como base a matriz de coeficientes de similaridade de "Jaccard", o que demonstrou maior similaridade entre a fauna das palmeiras e outras plantas que acumulam detritos acima do chão, entre as bromélias e entre aráceas de chão e outras plantas que acumulam detritos junto ao chão.Palavas-chave: Aracnhida, Pseudoscorpionida, diversidade, Amazonas, floresta de terra firme. Pseudoscorpions (Aracnida) in the undergrowth vegetetion indryland forest in Coari, Amazonas, Brazil.ABSTRACT -A richness of 15 pseudoscorpion species, 12 genera belonging to 5 families (Chthoniidae, Geogarypidae, Olpiidae, Atemnidae and Chernetidae) were found in the undergrowth vegetation of the dryland forest, at the upper Urucu river, Coari, Amazonas, from 1991 to 1996, and was collected by the "beating tray" method. Apolpium aff. vastum was the most frequent and abundant species in the undergrowth forest vegetation. Among the various types of plants examined, the majority of the pseudoscorpions occurred in small palms (in the groundtrenched palms as much as the erect stemmed palms). To appraise the specie's composition of these arachnids found in the different kinds of plants, the Q-mode analysis was used based on Jaccard's similarity coefficients. The coefficients that showed the greatest similarity were between the fauna of the palms and other plants that accumulate litter on top of the ground, and between the Bromeliacea and Aracea of the floor and other plants that use the litter of the ground.

A new species, Chactas braziliensis sp. n., is described from Brazilian Amazonia. It can be distinguished from congeners by its small size, a generally darker coloration, a higher number of pectinal teeth, a totally smooth vesicle and its ecological preferences. The genus Chactas Gervais, 1844 is recorded for the first time for Brazil and the Amazon basin. The geographical pattern of its distribution is discussed.

No abstract

ABSTRACT. The scarab beetle Amblyodus taurus Westwood, 1878 (Scarabaeidae: Dynastinae: Phileurini) is record for the first time in Brazil (Brazilian Amazon), based upon several specimens collected in "terra firme" primary rainforest, in the interfluvial region between the Juruá river and the Purus river, Amazonas State.Amblyodus taurus Westwood, 1878 puede ser fácilmente reconocida por la presencia de una armadura desarrollada y bifurcada hacia atrás en la región media de la frente, pronoto aplanado, mandíbulas tridentadas, protibia quadridentada y ápice de la metatibia con 6 dientes. Los adultos generalmente son atraídos por las luces eléctricas y han sido colectados en troncos en descomposición dentro del bosque tropical. Junto con Oryctophileurus Burmeister, son los dos únicos géneros neotropicales de Phileurini que presentan cuernos en la cabeza (Ide, 1998. Tesis Doctorado, Universidad de São Paulo).

Em excursão à ilha de Maracã, Estação Ecológica da Secretaria Especial do Meio Ambiente, Roraima, Brasil, de 16 a 22/3/1988, foram coletados com isca luminosa (luz mista de mercúrio), seis exemplares de Stenodontes spinibarbis (Lin., 1758). Quatro desses coléopteros carregavam Pseudoscorpiões de três espécies: Lechutia chthoniiformis (Balzan, 1980), Neocheiridium carticum (Balzan,1890) e Lustrochernes intermedius (Balzan, 1891). As duas primeiras espécies são assinaladas agora na Amazônia e pela primeira vez em forésia. A última, já registrada para a região Amazônica, ainda não tinha sido encontrada em forésia. Fornecem-se dados sobre estes exemplares e redescreve-se Lechytia chthoniiformis.