Time filter

Source Type

Porto Alegre, Brazil

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. Source

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. Source

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. Source

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. Source

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. Source

Discover hidden collaborations