Museu de Ciencias Naturais

Porto Alegre, Brazil

Museu de Ciencias Naturais

Porto Alegre, Brazil
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Volkmer-Ribeiro C.,Museu de Ciencias Naturais | Machado V.S.,Federal University of Rio Grande do Sul
Iheringia - Serie Zoologia | Year: 2017

The phylum Porifera, represented in the state of Mato Grosso do Sul (MS) solely by freshwater sponges, counts worldwide with around 230 species in freshwater habitats, of which 53 are presently known for Brazil and 11 for the MS. Remarkable is the fossil deposits of spicules (spongillites) produced by 6 species of these sponges in lentic quaternary freshwater habitats throughout the State and as such an important mineral resource. A new record is now produced for Mato Grosso do Sul, that of Sterrastrolepis brasiliensis. The Pantanal, Cerrado, Mata Atlântica and Chaco Biomes have not up to now been surveyed for this aquatic fauna in the State. Priority should be focused into the Pantanal, presently considered one of the world most endangered biomes. © 2017, Fundacao Zoobotanica do Rio Grande do Sul. All rights reserved.

Platnick N.I.,American Museum of Natural History | Duperre N.,American Museum of Natural History | Ott R.,Museu de Ciencias Naturais
Bulletin of the American Museum of Natural History | Year: 2011

Males of the goblin spider genus Brignolia Dumitresco and Georgesco have palps that are heavily sclerotized, resembling those found in males of the genus Ischnothyreus Simon. Nevertheless, these palps have the dorsal depression ("fenestra") previously considered synapomorphic for the genus Opopaea Simon (plus its likely synonym Epectris Simon), and the female genitalia also correspond closely to those of Opopaea species, with the addition of a posterior tube. Brignolia males lack the inflated and subbasally connected palpal patella characteristic of Opopaea (plus Epectris), and Brignolia is therefore hypothesized to represent the sister group of those taxa. The generic names Lisna Saaristo and Aridella Saaristo, each based on a single species from the Seychelle Islands, are newly synonymized with Brignolia. The type species, B. cubana Dumitresco and Georgesco, has attained a pantropical distribution, and has at least three earlier names; Xestaspis parumpunctata Simon from Sierra Leone, Gamasomorpha perplexa Bryant from the Virgin Islands, and B. recondita (Chickering) from Panama are each placed as senior synonyms of B. cubana. Opopaea ambigua Simon, from Sri Lanka, is transferred to Brignolia. A total of 26 new species are described. Two are from the New World (B. dasysterna from Florida, and B. cobre from Florida and the West Indies), but most are from southern Asia and the Indopacific region: B. sinharaja and B. ratnapura from Sri Lanka, B. rothorum, B. cardamom, B. kumily, B. valparai, B. kaikatty, B. nilgiri, B. kodaik, B. jog, and B. karnataka from southern India, B. bengal, B. sukna, B. assam, and B. ankhu from northern India and Nepal, B. mapha, B. suthep, B. diablo, and B. chumphae from Thailand, B. schwendingeri from Vietnam, B. palawan from the Philippines, and B. gading, B. elongata, and B. kapit from Borneo. © 2011 American Museum of Natural History.

Martins U.R.,University of Sao Paulo | Galileo M.H.M.,Museu de Ciencias Naturais
Zoologia | Year: 2012

The following new species are described - Cerambycinae, Sydacini: Sydax flechtmanni sp. nov. from Brazil (São Paulo); Eburiini: Ebrodacrys biffipradorum sp. nov. from Brazil (Roraima); - Lamiinae, Pteropliini: Ataxia piauiensis sp. nov. from Brazil (Piuaí); Calliini: Amucallia carbonaria sp. nov. from French Guiana; A. citrina sp. nov. from Guiana. Also in Lamiinae, two new genera of Onciderini are proposed. Ubytyra gen. nov., type species U. tuberosa sp. nov. from Peru (Junin) e Japi gen. nov., type species J. duartei sp. nov., from Brazil (São Paulo); Ubytyra gen. nov. can be distinguished by the sides of prothorax with long central spine rounded at apex, and this new feature among Onciderini is discussed. Japi gen. nov., is characterized by a fringe of long hairs on the inner side of antennomere III, present only in species from North and Central America, and gender comparison of these species is done and discussed. In Hemilophini, Pseudotacocha gen. nov., type species P. magnifica sp. nov. from Peru (Cuzco), are described. The new genera can be distinguished by eyes well developed, elytra with two carinae and the apices outer with short spine; a comparison with related genera is done. © 2012 Sociedade Brasileira de Zoologia. All rights reserved.

Franca M.A.G.,University of Sao Paulo | Ferigolo J.,Museu de Ciencias Naturais | Langer M.C.,University of Sao Paulo
Naturwissenschaften | Year: 2011

For more than 30 million years, in early Mesozoic Pangea, "rauisuchian" archosaurs were the apex predators in most terrestrial ecosystems, but their biology and evolutionary history remain poorly understood. We describe a new "rauisuchian" based on ten individuals found in a single locality from the Middle Triassic (Ladinian) Santa Maria Formation of southern Brazil. Nine articulated and associated skeletons were discovered, three of which have nearly complete skulls. Along with sedimentological and taphonomic data, this suggests that those highly successful predators exhibited some kind of intraspecific interaction. Other monotaxic assemblages of Triassic archosaurs are Late Triassic (Norian-Rhaetian) in age, approximately 10 million years younger than the material described here. Indeed, the studied assemblage may represent the earliest evidence of gregariousness among archosaurs, adding to our knowledge on the origin of a behavior pattern typical of extant taxa. © 2011 Springer-Verlag.

New species in Cerambycinae described from Brazil, Piauí: Compsibidion paragraphycum sp. nov. (Neoibidionini). New species in Lamiinae-from Piauí: Trichohippopsis vestita sp. nov. (Agapanthiini); Oncioderes piauiensis sp. nov. (Onciderini); Cotycicuiara caracolensis sp. nov. (Desmiphorini); Xenofrea peculiaris sp. nov. (Xenofreini); Mariliana bellula sp. nov. (Hemilophini);-from Paraíba: Ataxia arenaria sp. nov. (Pteropliini); Dadoychus atrus sp. nov. (Hemilophini). New records in Cerambycinae from Piauí: Methia longipennis Martins & Galileo, 1997 (Methiini); Tropidion sipolisi (Gounelle, 1909), Compsibidion decoratum (Gounelle, 1909), Cycnidolon obliquum Martins, 1969 (Neoibidionini);-from Ceará: Paranyssicus conspicillatus (Erichson, 1847) (Elaphidiini); Aglaoschema collorata (Napp, 1993) (Compsocerini);-from Bahia: Stizocera phtisica Gounelle, 1909 (Elaphidiini). New records in Lamiinae from Piauí: Dolichosybra tubericollis Breuning, 1942 (Apomecynini); Ceiupaba lineata Martins & Galileo, 1998, Cicuiara striata (Bates, 1866), Desmiphora pallida Bates, 1874 (Desmiphorini); Nesozineus apharus Galileo & Martins, 1996, Psapharochrus nigrovittatus (Zajciw, 1969) (Acanthoderini);-from Ceará: Trichohippopsis rufula Breuning, 1958 (Agapanthiini); Ataxia parva Galileo & Martins, 2011 (Pteropliini); Desmiphora cirrosa Erichson, 1847 (Desmiphorini);-from Paraíba: Eudesmus rubefactus Bates, 1865 (Onciderini); Laraesima ochreoapicalis Breuning, 1973 (Compsosomatini); Psapharochrus itatiayensis (Melzer, 1935) (Acanthoderini);-from Bahia: Brasiliosoma tibiale (Breuning, 1948) (Compsosomatini); Adesmus hemispilus (Germar, 1821) (Hemilophini).

De Castro Canani L.G.,Federal University of Rio Grande do Sul | Torgan L.C.,Museu de Ciencias Naturais
Diatom Research | Year: 2013

Two new Eunotia species, E. ibitipocaensis Canani & Torgan and E. saltoensis Canani & Torgan are described. The specimens were found in acidic oligotrophic rivers from pristine watersheds located at 940 m above sea level in Ibitipoca State Park, southeastern Brazil. Both species have costae adjacent to the helictoglossae, which is an uncommon structure for the genus Eunotia Ehrenberg. Eunotia ibitipocaensis has mostly heteropolar valves with apices of variable shape and relatively low stria density. The valves of E. saltoensis are isopolar with ventrally bent apices and possess higher stria density than E. ibitipocaensis. The heteropolarity observed is a less common condition in Eunotia, but it is usually found in the genus Actinella Lewis. The diagnostic features that distinguish Eunotia and Actinella are discussed. © 2013 The International Society for Diatom Research.

Guidoti M.,Federal University of Rio Grande do Sul | Barcellos A.,Museu de Ciencias Naturais
Zootaxa | Year: 2013

The five instars of Teleonemia scrupulosa Stal are described. The postembryonic ontogenetic development of integumentary structures is emphasized, with a discussion on its potential use in cladistic studies within Tingidae. © 2013 Magnolia Press.

This study aims to present new records of crustose lichenized fungi for the National Forest of São Francisco de Paula. Eleven new lichen species are presented for the area and fi ve new records for the state of Rio Grande do Sul, Anthracothecium prasinum (Eschw.) R.C. Harris, Bacidia fl uminensis (Malme) Cáceres & Lücking, Graphis nematoides Leight, Graphis subturgidula Lücking & Sipman and Lecanora hypocrocina Nyl. Copyright © 2008 Fundaç ão Zoobotanic a do RS.

Nopyllus gen. nov. is proposed to include Apopyllus isabelae Brescovit & Lise, 1993 and Nopyllus vicente sp. nov. from southern Brazil. Nopyllus gen. nov. is close to Apodrassodes Vellard, 1924 and Apopyllus Platnick & Shadab, 1984, can be distinguished from both genera by the absence of a dorsal abdominal scutum in males, the absence of a median apophysis on bulb, the curved, narrow and reniform cymbium, and by the presence of a very conspicuous cymbial basal projection. © 2014 Fundacao Zoobotanica do Rio Grande do Sul. All rights reserved.

The new genus Neodrassex is proposed to include two new species of Gnaphosidae from Brazil. Neodrassex aureus sp. nov. is described from Amazonas, Paraná and Rio Grande do Sul states, and N. iguatemi sp. nov. is described from Paraná state. Neodrassex gen. nov. is characterized by small size, pale coloration, large anterior median eyes surrounded by black pigmentation, absence of a dorsal abdominal scutum in males and by the cheliceral dentition with 2-3 teeth on the promargin and 2-4 on the retromargin. The new genus is tentatively placed at the Leptodrassex group.

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