Journal articles: 'Chapada Diamantina, Brazil' – Grafiati (2025)

Abstract:

We describe five new taxa of Euastrum (E. abruptum var. chapadae, E. fissum var. nordestinum, E. marimbusense, E. ornatiscrobiculatum and E. praemorsum var. foersteri), and report a new record for the Northeastern Region of Brazil (E. groenbladii) from periphyton samples collected in the Pantanal dos Marimbus in the Chapada Diamantina, Bahia State, Brazil. Taxonomic notes and ecological characteristics of the taxa are provided.

Abstract:

Chapada Diamantina is located in central Bahia state, and has a large diversity of habitats, including important transitional areas, but has remained largely unstudied until now. In the present study we list the non-flying mammals of Chapada Diamantina National Park and surroundings. We captured only small non-volant mammals, medium and large mammals were assessed through indirect evidences (tracks and marks) and interviews. We recorded 58 species and 47 genera from seven Mammalian orders. Seven species are included in the list of endangered Brazilian species by IBAMA and IUCN; and other seven are classified as data-deficient. Species richness of small mammals was equivalent among sampled habitats, but species composition varied among habitats (10 in semi-deciduous forest, 9 in rocky savanna and 8 in cerrado sensu stricto), as some species are restricted by humidity to forest habitats. During four different samplings, eight species were collected only in open vegetation, four only in forests, and six in both habitats. Oligoryzomys rupestris and Gracilinanus microtarsus had its geographic range expanded. Faunal composition is similar to the one observed in the Atlantic Forest, including species from Cerrado and Caatinga. Besides, some species occupy different habitats from those previously ascribed to them.

Abstract:

We report here taxonomic novelties and interesting records of desmids, including new taxa, rare species and new occurrences, collected at three areas (Piatã, Rio de Contas and Palmeiras) in the Chapada Diamantina region, northeastern Brazil. We identified 16 desmids, including six taxa new to science (Cosmarium diamantinum, Euastrum bicudoi, E. piataense, Micrasterias jenneri var. semicirculare, M. torreyi var. pseudocurvata, and Tetmemorus furcatus), as well as new records for Brazil (Euastrum subcyclopicum var. elongatum and Euastrum octogibbosum). Taxonomic notes and ecological information are provided.

Abstract:

In this study, we describe and illustrate Piriqueta crenata, a new species from the Chapada Diamantina region, Bahia, Brazil. It is similar to and was initially identified as P. flammea from which it can be distinguished by the cuneate leaf blade bases (vs. rounded), slightly discoloured leaves (vs. strongly discoloured), inflorescences of fewer flowers (1–3 vs. 3–6), olive-green calyx when dry (vs. blackened), and yellow corolla (vs. orange red). Piriqueta crenata is only known from a single small savanna nested in the semiarid Chapada Diamantina region, close to areas under anthropogenic influence. Therefore, we evaluate the species as Critically Endangered.

Abstract:

The unknown female of Brasineura diamantina Silva-Neto & García Aldrete, is described and illustrated, with new records and comments on variation in the fore-hindwing venation, based on 27 females and 113 males collected in five localities in the Chapada Diamantina, Bahia, Brazil. Thirty four types of variation and anomalies in the fore-hindwing veins were found. A revised diagnosis of B. diamantina is also presented.

Abstract:

A new species of Abarema from Brazil is described and illustrated. The new species is endemic to Morro do Chapéu, Chapada Diamantina, in the state of Bahia. Abarema diamantina shares morphological affinities with A. cochliacarpos by having a capitate raceme, strongly lenticelate branches, and median-basal pleurogram. However, there are remarkable vegetative and reproductive morphological characters which distinguish the two taxa. Here a description of the new species and illustrations are presented; a distribution map, and comments highlighting the differences between the closely related species are discussed.

Abstract:

Iniciado em 1982, o Projeto Central cobre uma área de 105.000 m2 com o seu epicentro no município de Central, no coração da caatinga. Um dos objetivos do projeto é estudar as milhares de pinturas rupestres da ârea, das quais aquelas com representações de mamíferos tem sido estudadas deølhadamente desde 1987 Beltrão e Lock, 1988). Sítios no quartzito pré-cambiano, no municlpio de Morro do Chapéu na borda nordeste da Chapada Diamantina, contém considerável número de pinturas, principalmente mamlferos (veados), seguido por antropomorfos e pássaros. Nestes sltios 947o das pinturas representam "Bionmr,fos emâÇãs"l e 67o das figuras2 são "biomorfos estáticos"3. Na porção noroeste da chapada, em contraste, nas pinturas encontradas nos municípios de Central, Xique-xique, Uibaf e Gentio de Ouro, existe sempre uma diversidade de zoomorfos, entretanto um ou outro pode predominar. Aqui, além disso, 96% representam figuras isoladas de "biomorfos estáticos", enquanto 47o de "biomorfos de ação". A cor vermelhachapada, técnica de cor sólida predomina em ambas as áreas. Nesta área, especialmente nos sítios dos "canyons" de quartzitos, o estilo é Serra Azul, na tradição geométrica descrita por Guidon (1980) e as pinturas são chefiadas pelos mamíferos, alguns do Pleistoceno. Nos sltios e borda da nordeste da chapada, também em quartzito quatro tradiçõesestão representadas: Planalto @rous, l98l), Nordeste (guidon, 1975,1978-80 e 1981), São Francisco (Prous, 1981) e Geométrica, estilo Búzios (Beltrão et alii, 1990). Nossa interpretação preliminar sugere que, no nordeste da chapada, o homem pré-histórico buscou representar arelação entre o céu e a terra e, na porção nordeste, a relação entre homens e animais.

Abstract:

A new species of Tmesiphantes Simon, 1892, is described from sandstone/quartizitic caves of Chapada Diamantina, Bahia State, Brazil. This is the fifth species of the genus and the first record of a troglobitic mygalomorph in Brazil. A key is presented for all Tmesiphantes species.

Abstract:

Lychnophora spiciformis, a new species from Brazil, is here described and illustrated. The new species is endemic to the Chapada Diamantina in Bahia, Northeastern Brazil. Lychnophora spiciformis is characterized by its pseudoterminal congested spike-like inflorescence of capitula or glomerules of capitula. The affinities of this species are discussed.

Abstract:

A new species of Helicopsyche subgenus Feropsyche from Chapada Diamantina is diagnosed, described, and illustrated. Helicopsyche catoles n. sp. is easily distinguished from congeners by the following features: inferior appendages clavate, each bearing a posteroventral projection with 2-4 setae in lateral view, and tergum X with a notched apex and a short setal row along its length in dorsal view. Additionally, new records from Chapada Diamantina, Bahia, Brazil, are presented. A total of 31 species, including the new species, are recorded, belonging to 14 genera and 8 families. Two of these species constitute new records to Brazil (Helicopsyche (Feropsyche) succincta and Marilia misionensis) and another 10 of these species represent new records for Bahia [Chimarra (Curgia) hyoeides, Macronema hageni, M. partitum, Polyplectropus tragularius, Smicridea coronata, S. helenae, S. iguazu, S. jundiai, S. radula and Marilia major].

Abstract:

We present the first species list of squamate reptiles for the central region of the Chapada Diamantina, with a focus on the municipality of Mucugê, state of Bahia Brazil. The data provided were mostly collected in the Caraíbas estate, during vegetation clearing operations for agriculture. The remnant records were collected from roadkills encountered in Mucugê and neighboring municipalities. We found 64 species of squamate reptiles including 35 species of snakes, 25 of lizards and four of amphisbaenians. These records have already yielded three species descriptions with others likely to follow. This is evidence of the poorly documented herpetological diversity of the Chapada Diamantina. The present work highlights the need for further research and the potential of less traditional data sources such as roadkills to improve the knowledge of the herpetofauna of extensive and megadiverse countries like Brazil.

Abstract:

The origin of diamonds from Serra do Espinhaço in Diamantina region (State of Minas Gerais) and in Chapada Diamantina, Lençóis region (State of Bahia) remains uncertain, even taking into account the ample research carried out during the last decades. The lack of typical satellite minerals in both districts makes a kimberlitic source for these diamonds uncertain. In mid 18th century the occurrence of a metamorphosed igneous rock composed of martite, sericite and tourmaline was described in Diamantina region and named hematitic phyllite, considered by some researchers as a possible diamond source. Similar rocks were found in Lençóis and examined petrographically and their heavy mineral concentration was investigated by means of scanning electron microscopy (SEM). Petrographic analyses indicated an igneous origin for these rocks and SEM analyses showed the discovery of microdiamonds. Geochronological studies using the Ar/Ar technique in muscovites yielded minimum ages of 1515 ± 3 Ma, which may correlate with 1710 ± 12 Ma from U-Pb method in igneous zircons from the hematitic phyllites. Both rock types also have the same mineral and chemical composition which leads to the conclusion that the intrusive rocks were protolith of the hematitic phyllites. This first discovery of microdiamonds in intrusive rocks opens the possibility of new investigation models for diamond mineralization in Brazilian Proterozoic terrains.

Abstract:

A new species of black fly, Simulium (Inaequalium) margaritatum, is described based on the male, female, pupa, and larva. This new species was collected in small streams in the Chapada Diamantina National Park and surrounding area in the state of Bahia, Brazil.

Abstract:

SummaryRecent ornithological surveys of humid forest remnants in the Serra da Ouricana near Boa Nova, southern Bahia, Brazil, revealed the existence of an as yet unnoticed montane Atlantic forest avifauna. Among the 220 species recorded, 27 represent range extensions of several hundred kilometres, several others were preceded only by single or a few old, disputed records from Bahia, and at least two are undescribed taxa. A portion of this avifauna has been recorded in other mountainous areas of interior Bahia (Chapada Diamantina, plateau of Maracás), where a complex vegetation mosaic that includes patches of humid forest is found.In addition to the two undescribed passerines, nine other threatened and thirteen near-threatened species have been recorded in the study area. Considered together with the adjoining and also highly endangered “mata-de-cipo”, forest habitats in the Boa Nova area are probably the most neglected habitats in Brazil concerning bird conservation.Levantamentos ornitológicos recentemente feitos em remanescentes florestais úmidos na Serra da Ouricana perto de Boa Nova, sul da Bahia, Brasil, revelaram a existência nessa região de uma avifauna montícola da mata Atlântica. Entre as 220 espécies registradas, estão 27 que tiveram sua área de distribuição estendida por centenas de quilômetros, muitas outras conhecidas da Bahia apenas através de registros antigos e contestados, além de ao menos duas aves não descritas. Parte dessa avifauna foi também registrada em outras áreas montanhosas do interior da Bahia (Chapada Diamantina, Chapadão Maracás), onde se encontra um complexo mosaico de vegetação que inclui manchas de floresta úmida. Além dos dois pássaros não descritos, outras nove espécies ameaçadas e treze quase-ameaçadas foram registradas na área de estudo. Considerando-se em conjunto essa área com a vizinha “mata-de-cipo”, também muito ameaçada, pode-se dizer que os ambientes florestais na região de Boa Nova são os hábitats mais negligenciados em relação à conservação de aves no Brasil.

Abstract:

Eupatorieae (Asteraceae) is the largest tribe of the Phytomelanic Fruit Clade, mostly restricted to the western hemisphere. Phylogenetic studies in Eupatorieae recovered some clades endemic to the Brazilian rocky fields. In one of these clades Catolesia is composed up to now by only two species, C. mentiens and C. huperzioides and it is distinguished by characters such as sessile leaves, capitulescence or heads surrounded by leafy-bracts, convex to conical, paleaceous receptacle, and pappus absent. In this study, we propose a new species of Catolesia, C. monocephala, characterized by the pedunculate and solitary capitula at the apex of the branches, aciculate leaf laminae, conical, paleaceous receptacle, paleae 60–70, spatulate, apex acute, and 60–100 flowers per head. The new species is endemic to the rocky fields vegetation from Esbarrancado mountain in the Mucugê and Palmeira municipalities, in Chapada Diamantina, Bahia, Brazil.

Abstract:

The Reverend Charles Grenfell Nicolay (1815-1897) made an important contribution to early geological work in Western Australia as a scientific adviser to the Colonial government and founder of the Colony's first public collection of rocks, minerals and fossils. During his early career he taught geography at King's and Queen's Colleges in London, before leaving London in 1858 to serve as the Anglican Church Chaplain to the British residents in the city of Salvador, Bahia, Brazil. We describe here some of his geological activities in Brazil over the period 1858-1869. He assisted Charles Frederick Hartt (1840-1878) and Louis Agassiz (1807-1873) on the Thayer Expedition of 1865-1866 in their geological investigations of the province of Bahia, most notably providing geological descriptions of the diamond deposits of the Chapada Diamantina, then a diamond province of world importance. After returning to England, he presented his findings on the Chapada Diamantina to the British Association for the Advancement of Science meeting in Norwich in 1868. From May to August 1869, he made a brief return visit to Brazil acting as a geological advisor to the Brazilian Turba Company, who were hoping to exploit bituminous sedimentary deposits adjacent to the Bahia de Camamu, Bahia, in the production of oil and gas. Following his arrival in Western Australia, he corresponded with the Reverend William B. Clarke (1798-1878), in 1871-1872, on the subject of Brazilian diamonds, as Clarke sought to understand the diamond occurrences in eastern Australia. Through Clarke, Nicolay's description of the geology of the Chapada Diamantina was circulated to the Australian scientific community.

Abstract:

Dasyphyllum diamantinense is a new species endemic to the Chapada Diamantina Mountains in the northern section of the Espinhaço Range, in Bahia State, Brazil, which grows in rocky fields, forests and savannas, and on inselbergs. The new taxon is morphologically similar to Dasyphyllum leptacanthum. Affinities and diagnostic characters are discussed, and illustrations and a map are provided.

Abstract:

A new species of fig tree endemic to the Chapada Diamantina in the northeastern Brazilian state of Bahia, is described and illustrated. Ficus diamantina belongs to the Ficus sect. Americanae. The new species occurs sympatrically with Ficus clusiifolia and shows affinities with Ficus bahiensis from which it differs by the reddish color of young branches with epidermis flaking off, the tector and glandular trichomes on the lamina abaxial surface, the number of lateral veins, the divergence angle of basal pair of veins and the subsessile syconia. It occurs in high montane forests near Campos Rupestres (upland rocky fields) at altitudes up to 800 m.

Abstract:

Cuphea harleyi, a new species from Chapada Diamantina, Bahia state, Brazil is described, illustrated, and commented on its ecological aspects. The new species inhabits rocky cerrado and campos rupestres, and is classified in Cuphea sect. Euandra subsec. Hilariella. The comparison of the new species with other species of the subsection has led to the synonymization and lectotypification of C. polymorphoides.

Abstract:

Simulium jefersoni n. sp. is described based on adults, pupae, and larvae collected in Chapada Diamantina National Park and the surrounding area, in the state of Bahia, Brazil. Its affinities with other species, distribution, and biology in Brazil are presented. The immature stages of S. jefersoni n. sp. were found in 44% of the 68 streams sampled in the study area. Females did not bite humans in the field.

Abstract:

Myrtaceae is an important family in the neotropics, being highlighted for its relevance in a wide range of vegetations, including those found within the Espinhaço Mountain Range (EMR). The main goal of the present work was to analyze Myrtaceae floristic composition and vegetation distribution in the municipality of Mucugê, Chapada Diamantina, Bahia. Specimens were analyzed in herbaria, two field expeditions were carried out and a landcover classification was performed through remote sensing. The compiled dataset presented 438 records with valid taxonomical identification, from which 374 records were seen by the authors in herbaria. Nine genera and 66 species of Myrtaceae were found, representing the largest Myrtaceae diversity recorded in Chapada Diamantina so far. Four vegetation classes were detected in the landcover classification (campo rupestre, cerrado sensu lato, caatinga sensu lato, and evergreen forest), encompassing 12 phytophysiognomies validated in situ. Comparisons on species diversity within different classes of vegetation were made by overlapping the vegetation classification and Myrtaceae records, also highlighting a directional sampling effort, being the areas threatened by the agriculture expansion both subsampled and poorly known.

Abstract:

Resumo. É apresentada uma lista das espécies de Cerambycidae do município de Morro do Chapéu, Bahia, Brasil, coletados no projeto Programa de Pesquisa em Biodiversidade do Semiárido (PPBio/Semiárido) e depositados na Coleção Entomológica do Museu de Zoologia da Universidade Estadual de Feira de Santana (MZFS). Foram coletados 34 exemplares de 29 espécies distribuídas em 16 tribos e duas subfamílias. Oito das espécies listadas são registros novos para o estado sendo três para o bioma Caatinga. São fornecidas informações de distribuição e ilustrações das espécies.Cerambycidae (Insecta, Coleoptera) from the Morro do Chapéu, Chapada Diamantina, Bahia, BrazilAbstract. We present a species list of Cerambycidae from the municipality of Morro de Chapéu, Bahia, Brazil, based on specimens collected by the Project Programa de Pesquisa em Biodiversidade do Semiárido (PPBio/Semiárido) and deposited at Coleção Entomológica do Museu de Zoologia da Universidade Estadual de Feira de Santana (MZFS). Thirty-four specimens were collected in 29 species belonging to 16 tribes and two subfamilies. Eigth species are new record to the state Bahia and three for the Caatinga biome. In the list is included informations about distribution and a photo of each species is provided.

Abstract:

Results of studies with multiple approaches involving a species complex which includes Campomanesia xanthocarpa (Myrtaceae) indicate that specimens collected in Morro do Chapéu, the northern region of the Chapada Diamantina, Bahia, are distinct from those distributed farther south in Brazil. A description, comments, distribution map and an illustration of the new species, C. costata, are provided herein.

Abstract:

Pleroma rubrum (Melastomataceae, Melastomeae), a new shrubby species endemic to rocky outcrops of Chapada Diamantina, northeastern Brazil, is here described, illustrated and compared with closely related taxa. The new taxon is easily distinguished, within the Tibouchina pereirae species complex, by its quadrangular distal branches with a crown of long hirsute trichomes around nodes, leaves elliptic-lanceolate with reddish margins and petioles, reddish inflorescence and bracteoles, colored stipitate glands on all reproductive structures, except the pedoconnectives, involucral bracteoles, and urceolate capsules.

Abstract:

Jacaranda heterophylla M.M.Silva-Castro, a new species of Jacaranda, is described and illustrated. This species is only known from a restricted area of Caatinga located between Lençóis and Palmeiras, at the Chapada Diamantina (Bahia, Brazil). It resembles J. grandifoliolata by the elliptic to obovate leaflets and J. jasminoides by the leaves that are pinnate at the base and bipinnate at the apex. However, J. heterophylla differs from J. grandifoliolata by the higher number of leaflets (17–19 vs. 3–5) and from J. jasminoides by the longer leaflets (6–15 cm vs. 1–4 cm). Information on its conservation status, distribution, and phenology are provided.

Abstract:

Stylotrichium is a small genus in which all the five species are restricted to the rocky field vegetation (campo rupestre) in Chapada Diamantina, Bahia state, Brazil. From recent field collections in the area we have recognized a new species based on morphology. Stylotrichium hortensiae is distinguished by laminae oblanceolate to oblong (3.5–8 × 1–3 cm), greater number of flowers (35–45), anther connective appendage as long as wide, style 6.5 mm long, and pappus 1–1.5 mm long. A species description, illustrations, a key to the species, comments, and a distribution map are provided.

Abstract:

Three new species of Calliandra section Monticola are described and illustrated: C. bromelioides, C. lewisii and C. oroboensis. All of them are endemic to the Chapada Diamantina, Bahia, Brazil. In addition we present a study of the pollen morphology using light microscopy and scanning electron micrographs. An identification key for the three new species and the most morphologically similar species in section Monticola is also provided.

Abstract:

This study aimed to identify taxa belonging to the genera Monoraphidium and Ankistrodesmus (Chlorophyceae, Chlorophyta) in two wetland areas of Pantanal dos Marimbus (Baiano and Remanso) in the Marimbus-Iraquara Environmental Protection Area, Bahia State, Brazil, and contribute to the knowledge of Chlorophyceae of Bahia State and Brazil. The materials studied, which were of periphytic and metaphytic origin, came from 64 samples collected in April and June 2011. We identified 18 taxa, 13 from Monoraphidium and five from Ankistrodesmus. Eight taxa were additions to the continental microalgae flora of Northeastern Brazil. Two taxa rarely found in Brazil were collected during the study: Monoraphidium dybowskii and M. litorale.

Abstract:

This paper represents an additional contribution toward the knowledge of a bryophyte flora of Chapada Diamantina National Park in the State of Bahia, Brazil, in which are reported 27 species of mosses belonging to 22 genera and 14 families, and four species of liverworts belonging to four genera and three families. Most of these species seem to be restricted to this high altitude geomorphological complex area.

Abstract:

A new species of Comanthera (Eriocaulaceae) from Brazil is described and illustrated. C. borbae is a perennial herb with a cushion habit, endemic to the rocky outcrops in the Northern part of the Chapada Diamantina, in the semi-arid region of Bahia state, here assessed as an endangered species. Its habitat and morphological variation are discussed, in comparison with C. pignalii and C. floccosa, also from Bahia.

Abstract:

Herein, we provide the first record of Enyalius bilineatus for the Caatinga region, northeastern Brazil, and an updated distribution map based on literature and museum records. We collected two specimens of E. bilineatus at Serra do Barbado, northern region of the Espinhaço mountain ridge (“Chapada Diamantina” plateau complex), Bahia, Brazil. This new record extends the known geographic distribution of E. bilineatus 716 km, 462 km, and 590 km from the closest known localities in the southwest, southeast, and south, respectively.

Abstract:

A new combination for Lantana hatschbachii, earlier defectively published as Lippia ganevii, is provided. The species is currently known exclusively from the type locality in the municipality of Morro do Chapéu, Bahia, Brazil, in the rocky-field vegetation of the Chapada Diamantina. The species is characterized by oval-triangular to reniform leaves with a cordate to truncate base and lanceolate bracts covered by glandular trichomes.