Marcio Bernardino Dasilva

Universidade Federal da Paraíba | UFPB · Departamento de Sistemática e Ecologia

Poisoning by spiders' bites and scorpions' stings domestic canines and felines seems to be frequent, considering the biology and behavior of these animals. However, little is known about this relationship. In the present review, we compiled the available information concerning this topic by focusing on arachnids that can cause accidents, reported c...

Harvestmen are mostly composed of very endemic and narrow-ranged species, especially those living in tropical forests. Hygrophily, cryptic behavior, and low dispersion capacity are considered the biological causes of this distributional trait. Thus, Opiliones have been successfully used as models for biogeography (historic, phylogeography, diversit...

Elpidium is the most common ostracod genus occurring in phytotelmata in the Neotropical region, with distributions ranging from Florida, USA in the north to Rio Grande do Sul, Brazil in the south. However, the genus remains poorly known both in terms of diversity and of the distributional pattern of its species. Here, we describe six new species of...

Habitat loss and fragmentation have highlighted the importance of monitoring remaining habitats. For megadiverse groups such as arthropods, of which many species are still being discovered, the use of higher taxonomic levels as substi- tutes for diversity may be a useful tool. The aim of this study was to evaluate the use of substitute taxonomic...

Elpidium species exclusively inhabiting confined and temporary environments, such as those of tank-bromeliads, are a source of interesting and diverse studies on taxonomy, evolution and ecology, to name a few. However, despite its great diversity of species or potential for study, this genus (and other phytotelm members) has been poorly studied. In...

Harvestmen are one of the largest groups of arachnids with more than 6,500 species distributed in 1,500 genera and 50 families. However, the interactions between harvestmen and arthropod-pathogenic fungi have rarely been studied. Certain previous studies report that fungal attack represents one of the most important factors for the mortality of har...

Opiliones are highly diverse in the Neotropics. Because of biological constraints, most harvestmen communities are associated with humid forests, exhibiting a high species diversity and endemism in these habitats. Drier formations, such as the Caatinga biome in northeastern Brazil, are less diverse and still considered under-sampled for the order....

Areas of endemism (AoE) are the main study units in analytical biogeographic methods, and are often defined as an area with two or more endemic species living in them, presenting substantial congruence among their range limits. We explored the distribution of land planarians (Geoplanidae, Platyhelminthes) across the southern region of the Brazilian...

In this paper, we describe a new subfamily of Gonyleptidae, Paragoniosomatinae subfam. nov., based on a new genus and species, Paragoniosoma cachaceiro gen. nov., sp. nov., found in an upper montane cloud forest of Chapada Diamantina mountains, one of the small interior patches of Atlantic Forest. This discovery suggests that the narrow-restricted...

Cyrtopholis Simon 1892 is a spider genus from the Caribbean islands characterized by the presence of stridulatory setae on trochanter of palps and legs I. Franganillo Balboa described eight species of Cyrtopholis Simon 1892 from Cuba between 1926–1936. The type-material is deposited in the Instituto de Ecología y Sistematica do Ministerio de Cienci...

The tarantula genus Tmesiphantes Simon, 1892 (Theraphosinae) includes nine valid species, with records for the states of Bahia (T. nubilus, T. caymmii, T. amadoi, T. bethaniae, T. hypogeus, and T. mirim), Minas Gerais (T. perp and T. riopretano), and Pará (T. aridai), all in Brazil. In the present study, we reviewed the taxonomy of the Tmesiphantes...

The integration of ecology and historical biogeography is fostering the investigation of diversity patterns. We studied alpha and beta diversity patterns of Brazilian Atlantic Forest harvestman (Arachnida: Opiliones) communities and related them to environmental and historical factors. Our data bank contains 508 species from 63 sites, encompassing...

Analisando o material da Coleção de Aracnídeos e Miriápodes da Universidade Federal da Paraíba foi possível constatar que havia pelo menos três espécies novas e um gênero novo pertencentes a família Zalmoxidae. A descrição destes está sendo realizada para futura publicação.

A new troglobitic harvestman, Relictopiolus galadriel gen. nov et sp. nov., is described from Olhos d’Água cave, Itacarambi, Minas Gerais State, Brazil. Morphological characters, including male genitalia and exomorphology, suggest that this species belongs to the family Kimulidae, and it appears to share the greatest similarities with Tegipiolus pa...

Fully-resolved phylogenetic tree obtained by Bayesian inference analysis of the complete concatenated dataset, conducted in MrBayes. Support values at nodes represent posterior probabilities. (PDF)

Chronogram obtained by Bayesian inference analysis of the complete concatenated dataset including COI and H3 third codon positions, conducted in BEAST. Support values at nodes represent posterior probabilities and blue bars represent the 95% Highest Posterior Densities around divergence time estimates. (PDF)

Chronogram obtained by Bayesian inference analysis of the complete concatenated dataset, conducted in BEAST. Support values at nodes represent posterior probabilities and blue bars represent the 95% Highest Posterior Densities around divergence time estimates. (PDF)

Fully-resolved phylogenetic tree obtained by Bayesian inference analysis of the complete concatenated dataset including COI and H3 third codon positions, conducted in MrBayes. Support values at nodes represent posterior probabilities. (PDF)

The Brazilian Atlantic Rain Forest is amongst the most diverse biomes in the world, but the processes that shaped its biodiversity are still poorly understood. We used one mitochondrial and two nuclear markers to evaluate the phylogeographic patterns of the endemic harvestman Acutisoma longipes and its closely related species to investigate the bio...

Here, we describe a new species of Eusarcus and reconstruct the geographical evolution of its species group based on biogeographical event-based analysis. Eusarcus dandara sp. nov. has been recorded from Alagoas state, in northeastern Brazil, which represents an important range extension of the genus to the northern Atlantic Rainforest. We performe...

Based on a cladistic biogeographic analyses of six species-level phylogenies of harvestman taxa, we searched for congruence in the historical relationships of 12 areas of endemism of the Brazilian Atlantic Rain Forest. We constructed general area cladograms using Primary Brooks Parsimony Analysis (BPA), BPA of nodes, and paralogy-free subtree analy...

Abstract The concept of areas of endemism (AoEs) has rarely been discussed in the literature, even though the use of methods to ascertain them has recently increased. We introduce a grid-based protocol for delimiting AoEs using alternative criteria for the recognition of AoEs that are empirically tested with harvestmen species distributions in the...

Os autores deste livro e a EDITORA ROCA empenharam seus melhores esforços para assegurar que as informações e os procedimentos apresentados no texto estejam em acordo com os padrões aceitos à época da publicação, e todos os dados foram atualizados pelos autores até a data da entrega dos originais à editora. Adicionalmente, os leitores podem buscar...

A new species of Tmesiphantes Simon, 1892 is described and illustrated, based on eight male specimens collected at the Una Biological Reserve, southern state of Bahia, Brazil. It is distinguished by the morphology of male palpal bulb and tibial apophysis. The new species is very small and is the smallest theraphosid described to date (body length 5...

Serracutisoma gnaspinii sp. nov. is described from the coastal Ombrophylous Dense Atlantic Rain Forest of Parana and Sao Paulo states. It differs from other Serracutisoma by having a retrolateral row of spines on femur IV, a rounded white-mark on the carapace and a low dorsal apophysis on trochanter IV. It is likely the sister-species of S. proximu...

APRESENTAÇÃO Este livro é produto do esforço coletivo dos pesquisadores das instituições do Nordeste que participaram ativamente do trabalho de inventário do projeto PPBio Semiárido, assim como de seus estudantes de Iniciação Científica, Pós-graduandos nos níveis de Mestrado e Doutorado, bolsistas do PPBio e colaboradores externos de outras institu...

Mitogoniella mucuri sp. nov. is described for some caves in Minas Gerais, Brazil. This species differs from other Mitogoniella species by large tubercles on the ocularium that have fused bases and free apices (or almost fully fused tubercles with bifurcated apices), and by a large dry-mark between tubercles on the longitudinal groove of area III. M...

Two new species of Caelopyginae are described: Pristocnemis caipira sp. nov. from Parque Nacional da Serra da Canastra, Minas Gerais, Brazil, and Thereza murutinga sp. nov., from Parati, Rio de Janeiro, Brazil. Pristocnemis caipira sp. nov. is diagnosed by shallow grooves on the dorsal scutum, a lower number of tarsal segments, presence of a spine...

The harvestmen subfamily Hernandariinae is reviewed and a new classification is proposed based on cladistic analysis using 67 morphological characters. The subfamily is composed of six genera and 23 species and occurs in south-southeastern Brazil, Paraguay, and northeastern Argentina. Fourteen new combinations are proposed: Hernandaria armatifrons...

A new genus and species of Cyphophthalmi, Canga renatae gen. nov., sp. nov., is described in the family Neogoveidae from a system of caves in the Serra de Carajás, Pará State, Brazil. Canga can be easily distinguished from other neogoveid genera by the presence of a dentate claw on leg I, a unique character among known cyphophthalmid species, and b...

A new genus and species of Cyphophthalmi, Canga renatae gen. nov., sp. nov., is described in the family Neogoveidae from a system of caves in the Serra de Carajás, Pará State, Brazil. Canga can be easily distinguished from other neogoveid genera by the presence of a dentate claw on leg I, a unique character among known cyphophthalmid species, and b...

Goniosomatine harvestmen have strongly armed pedipalps, generally large bodies and, commonly, very long legs (sometimes more than 20cm), and are distributed in the Brazilian Atlantic forest, from southern Bahia to Santa Catarina. Since they are conspicuous animals and individuals of some species tend to concentrate in caves (and also under rock bou...

A new species of Multumbo Roewer, 1927 (Gonyleptidae: Hernandariinae), M. dimorphicus sp. nov., is described from Rio de Janeiro state, southeastern Brazil. It presents sexual dimorphism in leg IV, contrasting remarkably with the type species of the hitherto monotypic genus Multumbo and the closest genera (Piassagera Roewer, 1928 and Pseudotrogulus...

A new species of Multumbo Roewer, 1927 (Gonyleptidae: Hernandariinae), M. dimorphicus sp. nov., is described from Rio de Janeiro state, southeastern Brazil. It presents sexual dimorphism in leg IV, contrasting remarkably with the type species of the hitherto monotypic genus Multumbo and the closest genera (Piassagera Roewer, 1928 and Pseudotrogulus...

The order Opiliones has been divided into three (or four) suborders [Cyphophthalmi, Palpatores (Eupnoi +Dyspnoi) and Laniatores] that present several morphological and biological differences. Among Laniatores, two main groups can be recognized: Insidiatores, in which legs III and IV bear a single claw generally divided at the apex and the penis has...