Coleccion Boliviana de Fauna

La Paz, Bolivia

Coleccion Boliviana de Fauna

La Paz, Bolivia
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Perger R.,Coleccion Boliviana de Fauna | Grossi P.C.,University of Pernambuco | Guerra F.,Coleccion Boliviana de Fauna | Guerra F.,Higher University of San Andrés
European Journal of Taxonomy | Year: 2017

A new species of the Andean stag beetle genus Auxicerus Waterhouse, 1883 is described from the humid Tucuman-Bolivian forest in the southern Bolivian Andes. Auxicerus magnipunctatus sp. nov. is distinguished from all congeners by the distinctly larger punctures of the mesosternum; antennomeres 2-6 subquadrate, last two joints of club wider than long; lamellae not widely separated; posterior end of ocular canthus rounded and anterior edge of canthus moderately developed into an obtuse triangle. Auxicerus magnipunctatus sp. nov. is possibly endemic to the Tucuman-Bolivian forest. Along with the presence of other endemic beetle species with tropical congeners, the discovery of A. magnipunctatus sp. nov. supports the idea that the persistence of rather tropical taxa in the subtropical realm is fostered by increased humidity at orographic rain barriers and climatic stability in the Tucuman-Bolivian forest. © 2017, Museum National d'Histoire Naturelle. All rights reserved.

Perger R.,Coleccion Boliviana de Fauna | Perger Y.N.,Colegio Aleman
Annals of the Entomological Society of America | Year: 2017

A species richness hotspot of ant-mimicking (or myrmecomorphic) spiders of the subfamily Castianeirinae Reiskind, 1969, is reported from the premontane Chiquitano forest at the Bolivian orocline. In a transect of 350 m in a forest fragment of ∼10 ha, 148 individuals of five genera and 10 species were collected, including the first country records for the genera Mazax O. Pickard-Cambridge, 1898, Myrmecotypus O. Pickard-Cambridge, 1894, and Sphecotypus O. Pickard-Cambridge, 1895. The observations from this study represent an increase of the known fauna of Bolivian Castianeirinae from two to five genera and from three to at least 12 species. The generic and species richness is comparable with the fauna of mega-diverse moist forests in other Neotropical countries and may result from overlapping distributional ranges of faunal elements from several ecoregions. The discovery of this hotspot in an easily accessible and small area provides an excellent opportunity to gain further insight into the factors determining the evolutionary ecology and ant mimicry in Castianeirinae communities. Resumen. En este trabajo se reporta un "hotspot" de riqueza de especies de aranas imitadoras de hormigas (o mirmeomorfas) de la subfamilia Castianeirinae Reiskind, 1969 en un bosque preandino Chiquitano en el codo de los Andes, Bolivia. En un transecto de 350 m en un fragmento de bosque de ∼10ha se recolectaron 148 especimenes de de 5 generos y 10 especies, incluyendo los primeros registros para el pais de los generos Mazax O. Pickard-Cambridge, 1898, Myrmecotypus O. Pickard-Cambridge, 1894, y Sphecotypus O. Pickard-Cambridge, 1895. Con los resultados de este estudio, la fauna boliviana conocida de Castianeirinae aumenta de dos a cinco generos y de tres a por lomenos 12 especies. La alta riqueza de generos e especies es comparable con la fauna de bosquesmega-diversos humedos en otros paises neotropicales y probablemente es resultado de la superposicion de rangos distribucionales de elementos de fauna de diferentes ecoregiones. El descubrimiento de este "hotspot" en un area pequena y de facil acceso ofrece una excelente oportunidad de adquirir mas conocimientos sobre los factores que determinan la ecologia evolutiva y elmimetismo de hormiga de comunidades de Castianeirinae. © The Authors 2017.

The land crab Johngarthia planata (Stimpson, 1860) has been reported from the Baja California Peninsula and several oceanic islands in the Eastern Pacific as well as inshore islands of the Mexican, Costa Rican and Colombian coast. However, the species has not been observed on the continental mainland, as it is likely that the high diversity of terrestrial predators/competitors make the establishment of mainland populations nearly impossible. In this contribution, several new records of this species that have been observed in urban areas along the continental Pacific coast of Mexico are reported. These records demonstrate that the presence of humans does not necessarily have a negative impact on land crab species. Indeed, the presence of humans may actually discourage the presence of native crab predators/competitors and hence increase the likelihood of a successful mainland settlement of land crab species that are otherwise island and peninsula restricted. The presence of J. planata is ecologically relevant for coastal forests because gecarcinid crabs significantly influence plant recruitment and J. planata is considerably larger than the mainland species Gecarcinus quadratus. © Perger R.

Perger R.,Coleccion Boliviana de Fauna | Santos-Silva A.,University of Sao Paulo | Guerra F.,Coleccion Boliviana de Fauna | Guerra F.,Higher University of San Andrés
Zootaxa | Year: 2017

The male of Phoebe ornator (Tippmann, 1960) is described. Chromatic gender dimorphism is also reported for the first time in the Hemilophini. In addition, new records are presented for P. ornator for the Brazilian states of Amazonas, Mato Grosso, Rondônia and São Paulo, and the Bolivian department of La Paz. The biogeography of P. ornator is analyzed. Copyright © 2017 Magnolia Press.

The genera Parandrocephalus Heller, 1916 and Hexamitodera Heller, 1896 are reviewed and redescribed. Based on the combination of chromatic sexual dimorphism, velvety pubescence on the whole dorsal body and distinctly developed carina on the elytra, Parandrocephalus blairi Bentanachs & Vives, 2009 is transferred to Hexamitodera. A new subgenus, Sulcognatha Perger, is instituted to accommodate mandible, head and metasternal modifications in H. blairi comb n. That are lacking in the type species of Hexamitodera, H. semivelutina. As indicated by fundamental structural differences in the mandibles of Parandrocephalus and H. (Sulcognatha) blairi comb. n., the exaggerated secondary sexual traits and open procoxal cavities in both taxa are presumably the result of convergent evolution. Contrary to Bentanachs & Vives (2009), the presence of the two Parandrocephalus species in Sundaland and the endemism of Hexamitodera on Sulawesi agree well with the zoogeographical separation of both areas by the Wallace line.

Piacentini L.N.,Museo Argentino de Ciencias Naturales Bernardino Rivadavia | Avila Calero S.L.,Coleccion Boliviana de Fauna | Perez M.E.,Museo de Historia Natural Noel Kempff Mercado | Grismado C.J.,Museo Argentino de Ciencias Naturales Bernardino Rivadavia
Zootaxa | Year: 2013

The araneomorph spider family Palpimanidae is reported from Bolivia for the first time. Two new species: Otiothops kath-iae and O. naokii are described and illustrated based on specimens recently collected in Santa Cruz Department. Addition-ally, Fernandezina pulchra Birabén, 1951 previously known only from Formosa, in northern Argentina, is newly recorded from Santa Cruz, and the female is described for the first time. Potential relationships with previously described species are also briefly discussed. Copyright © 2013 Magnolia Press.

Marino J.,University of Oxford | Bennett M.,University of Oxford | Cossios D.,University of Montréal | Iriarte A.,University of Chile | And 5 more authors.
Diversity and Distributions | Year: 2011

Aim To identify the bioclimatic niche of the endangered Andean cat (Leopardus jacobita), one of the rarest and least known felids in the world, by developing a species distribution model. Location South America, High Andes and Patagonian steppe. Peru, Bolivia, Chile, Argentina. Methods We used 108 Andean cat records to build the models, and 27 to test them, applying the Maxent algorithm to sets of uncorrelated bioclimatic variables from global databases, including elevation. We based our biogeographical interpretations on the examination of the predicted geographic range, the modelled response curves and latitudinal variations in climatic variables associated with the locality data. Results Simple bioclimatic models for Andean cats were highly predictive with only 3-4 explanatory variables. The climatic niche of the species was defined by extreme diurnal variations in temperature, cold minimum and moderate maximum temperatures, and aridity, characteristic not only of the Andean highlands but also of the Patagonian steppe. Argentina had the highest representation of suitable climates, and Chile the lowest. The most favourable conditions were centrally located and spanned across international boundaries. Discontinuities in suitable climatic conditions coincided with three biogeographical barriers associated with climatic or topographic transitions. Main conclusions Simple bioclimatic models can produce useful predictions of suitable climatic conditions for rare species, including major biogeographical constraints. In our study case, these constraints are also known to affect the distribution of other Andean species and the genetic structure of Andean cat populations. We recommend surveys of areas with suitable climates and no Andean cat records, including the corridor connecting two core populations. The inclusion of landscape variables at finer scales, crucially the distribution of Andean cat prey, would contribute to refine our predictions for conservation applications. © 2011 Blackwell Publishing Ltd.

Perger R.,Coleccion Boliviana de Fauna | Guerra F.,Coleccion Boliviana de Fauna | Guerra F.,Higher University of San Andrés
Zootaxa | Year: 2012

Two new tiger beetle species from subhumid Tucuman-Bolivian forest in the National Tariquia Reserve in Tarija, Bolivia, are described and illustrated. Cylindera (Plectographa) yaguaree n. sp. is the first described Neotropical species in this genus that has setae over the complete elytral surface. Pseudoxycheila tucumana n. sp. closely resembles Pseudoxycheila andina Cassola, but is readily distinguished by spots on elytra longer than elytra width. These two new species are likely endemic to Tucuman-Bolivian forest and bring the known endemic forest tiger beetle fauna of this ecoregion to three species. Copyright © 2012 · Magnolia Press.

Perger R.,Coleccion Boliviana de Fauna | Guerra F.,Coleccion Boliviana de Fauna | Guerra F.,Higher University of San Andrés
Zootaxa | Year: 2016

A new calyptrate fly mimicking species of Gymnognathus Schönherr 1826 from the humid Tucuman-Bolivian forest in the southern Bolivian Andes is described. Gymnognathus barclayi sp. nov. is distinguished from the closest related species G. bohlsi Jordan, 1895, by the color and/or distribution of the scales on the pronotum, fourth ventrite and pygidium, the wider pronotum and the development of the spines on the pygidium. The arrangement of the longitudinal stripes on the pronotum suggests that G. barclayi sp. nov. is a mimic of tachinid or muscid flies. The almost exclusive occurrence of Gymnognathus species in tropical moist forests indicates that the presence of G. barclayi sp. nov. in the subtropical realm is fostered by increased humidity at orographic rain barriers. G. barclayi sp. nov. is possibly endemic to the Tucuman-Bolivian forest. Along with the presence of other endemic species, the discovery of G. barclayi sp. nov. highlights the importance of the Tucuman-Bolivian forest as an endemism hotspot for insects and calls for a re-assessment of the conservation status of this spatially restricted and threatened ecoregion. Copyright © 2016 Magnolia Press.

PubMed | Institute Ecologia and Coleccion Boliviana de Fauna
Type: | Journal: Biodiversity data journal | Year: 2015

The jewel beetle species Chrysobothrisdesmaresti (Laporte & Gory, 1836) and Hiperanthastempelmanni Berg, 1889, have been recorded in Bolivia for the first time. Both species were collected on xeric Acacia trees. As indicated by their presence on Acacia and previous records, both species may be endemic to the arid intermountain valleys of the Southern Bolivian and Northern Argentinean Andes as well as the Chaco lowland forests.

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