Two new species of Hyalella (Amphipoda, Dogielinotidae) from Brazil

Crustaceana ◽  
2013 ◽  
Vol 86 (7-8) ◽  
pp. 802-819 ◽  
Author(s):  
Alessandra A. P. Bueno ◽  
Paula B. Araujo ◽  
Giovanna M. Cardoso ◽  
Kelly M. Gomes ◽  
Georgina Bond-Buckup

Two new freshwater species of amphipods from Brazil are described here. Hyalella xakriaba n. sp. occurs in the hydrographic basin of the São Francisco River, in a biome characterized by a semiarid climate, in the state of Minas Gerais. This new species constitutes the northernmost record of the genus in Brazil. Hyalella kaingang n. sp. occurs in the hydrographic basin of the Mampituba River, located in Rio Grande do Sul, the southernmost state in Brazil. Currently 14 species of Hyalella are known in Brazil, cave species among them. Some morphological characters and their respective states are analyzed, and constitute an important new tool for species identifications. In particular, we describe the cuticular structures, defined as denticles, on the distal inner margin of the carpus of gnathopods 1 and 2. These structures may have a polygonal pattern or appear as comb scales, and may be arranged in one or more rows.

Zootaxa ◽  
2017 ◽  
Vol 4337 (2) ◽  
pp. 263 ◽  
Author(s):  
MORGANA TAIS STRECK ◽  
GIOVANNA MONTICELLI CARDOSO ◽  
STELLA GOMES RODRIGUES ◽  
DANIEL ANGELO SGANZERLA GRAICHEN ◽  
DANIELA DA SILVA CASTIGLIONI

There are 68 known species of Hyalella worldwide, with 23 occurring in Brazil. The state of Rio Grande do Sul, Southern Brazil, has the largest diversity of the genus in the country, with nine species recorded. The current study aimed to describe two new species of Hyalella from state of Rio Grande do Sul, both of them in the Northwest region of the state, one found in a small spring and another in an artificial pond. Hyalella georginae n. sp. presents several clusters of simple setae on antenna 2, maxilliped very slender, gnathopod 2 dactylus not reaching the lobe of propodus, pleopods rami with short plumose setae and a peculiar pattern of setae on uropods and telson. Hyalella gauchensis n. sp. presents antenna 2 with few setae, maxilliped very slender, gnathopod 2 dactylus reaching the lobe of propodus and pleopods rami with long plumose setae. From this work, the number of Hyalella species found in Brazil increases to 25 and 70 for the genus. 


2012 ◽  
Vol 102 (2) ◽  
pp. 227-238 ◽  
Author(s):  
Ricardo Ott ◽  
Everton Nei Lopes Rodrigues ◽  
Antonio Domingos Brescovit

In this paper seven new species of Latonigena Simon, 1893 are described, including the first descriptions of males of this genus. Latonigena beni sp. nov. is described from Bolivia and Brazil and six species are described exclusively from Brazil: L. colombo sp. nov. from Paraná; L. lami sp. nov. from Paraná and Rio Grande do Sul; L. santana sp. nov., L. sapiranga sp. nov. and L. taim sp. nov. from Rio Grande do Sul; L. turvo sp. nov. from Tocantins, Santa Catarina and Rio Grande do Sul. Latonigena africana Tucker, 1923 is transferred to Trichothyse Tucker, 1923 with basis on the morphological characters.


Zootaxa ◽  
2021 ◽  
Vol 4970 (2) ◽  
pp. 257-292
Author(s):  
JORDAN TUPARAI TALHAFERRO ◽  
ALESSANDRA ANGÉLICA DE PÁDUA BUENO ◽  
MATEUS MARQUES PIRES ◽  
CRISTINA STENERT ◽  
LEONARDO MALTCHIK ◽  
...  

In this study, three new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) are described based on specimens collected in wetlands located in three freshwater ecoregions (Southeastern Mata Atlântica, Tramandaí-Mampituba and Laguna dos Patos) of the southern Brazilian Coastal Plain (states of Rio Grande do Sul and Santa Catarina). Hyalella minuana n. sp. was recorded in the southernmost region of the state of Rio Grande do Sul. This species is characterized by presenting smooth body surface, epimeral plates not acuminated, nine serrate setae on the inner face of gnathopod 1, and peduncle of uropod 3 with four cuspidate setae with accessory seta and without plumose seta on the margin of the telson. Hyalella lagoana n. sp. was recorded in the northern region of Rio Grande do Sul and southern region of Santa Catarina. This species shows body surface smooth, epimeral plates not acuminated, nine serrate setae on the inner face of gnathopod 1, peduncle of uropod 3 with five cuspidate setae with accessory seta, and telson with six cuspidate setae with accessory seta without plumose seta on the margins. Hyalella sambaqui n. sp. was recorded in the state of Santa Catarina. This species is characterized by presenting smooth body surface, epimeral plates not acuminated, six serrate setae on the inner face of gnathopod 1, peduncle of uropod 3 with three cuspidate setae with accessory seta, and telson with three cuspidate setae with accessory seta and four plumose setae on the margin of the telson.                The new records elevates the known diversity of species of Hyalella in the Brazilian territory to 33 species (19 in the southern Brazilian region) and to 83 species in the Americas. 


Zootaxa ◽  
2021 ◽  
Vol 5004 (2) ◽  
pp. 251-287
Author(s):  
LÍVIA ROCHA ◽  
FERNANDO MORAES ◽  
SULA SALANI ◽  
EDUARDO HAJDU

Petrosiidae (Haplosclerida, Demospongiae) is characterized by the hard and friable consistency, and an isotropic reticulated skeleton of oxeas/ strongyles. The Brazilian coast and oceanic islands harbor three out of four known genera of Petrosiidae: Neopetrosia de Laubenfels, 1949; Petrosia (Petrosia) Vosmaer, 1885 and Xestospongia de Laubenfels, 1932. A taxonomic survey of samples from several expeditions housed at the Porifera Collection of Museu Nacional, Universidade Federal do Rio de Janeiro, with additional comparative materials obtained from the Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul, and Universidade Federal de Pernambuco enabled the description of two new species: P. (P.) revizee sp. nov. and X. dorigo sp. nov. We also recorded a range extention for Neopetrosia proxima and Xestospongia muta, and Xestospongia grayi was synonymized with X. muta. Other species reported from the country are diagnosed, and an identification key for Petrosiidae from Brazil is provided.


Phytotaxa ◽  
2019 ◽  
Vol 411 (1) ◽  
pp. 39-48 ◽  
Author(s):  
VERÔNICA A. THODE ◽  
SÉRGIO AUGUSTO DE LORETO BORDIGNON

Two species of Glandularia from Rio Grande do Sul Brazilian state are described, G. rupestris V. Thode & Bordignon and G. sessilifolia V. Thode & Bordignon. Detailed morphological descriptions, geographical distribution, evaluation of their IUCN conservation status and photographs are presented. Comparison tables with morphologically similar species occurring in Rio Grande do Sul and an identification key to the species occurring in Brazil are also provided.


Phytotaxa ◽  
2016 ◽  
Vol 289 (3) ◽  
pp. 271 ◽  
Author(s):  
SHIRLEY CUNHA FEUERSTEIN ◽  
NATÁLIA MOSSMANN KOCH ◽  
FABIANE LUCHETA ◽  
VERA MARIA FERRÃO VARGAS ◽  
ROSA MARA BORGES DA SILVEIRA

(A new species of Graphis [Graphidaceae: Lichenized Ascomycota] and a revised key of the genus in Rio Grande do Sul, southern Brazil). In this paper we describe a new species of the lichen genus Graphis, namely G. suzanae Koch & Feuerstein. This species is characterized mainly by lirellae with entire labia, a partially exposed disc with orange pigment in the epithecium, a lateral thalline margin, a laterally carbonized excipulum, a clear hymenium, and transversely septate ascospores measuring 40–44 × 8–10 μm. The chemistry of the species was assessed through TLC analysis. A complete key with G. suzanae and 56 more species of Graphis that where previously recorded to the state of Rio Grande do Sul, southern Brazil, is included.


Zootaxa ◽  
2008 ◽  
Vol 1814 (1) ◽  
pp. 21 ◽  
Author(s):  
RAFAEL P. INDICATTI ◽  
SYLVIA M. LUCAS ◽  
JOSÉ P. L. GUADANUCCI ◽  
FLÁVIO U. YAMAMOTO

The genus Magulla Simon 1892 is revalidated and redescribed. The female of the type species M. obesa Simon 1892 is redescribed and the male is described for the first time. Magulla janeirus (Keyserling 1891) is considered a valid species. Magulla symmetrica Bücherl 1949 is transferred to Plesiopelma Pocock 1901, and considered a junior synonym of P. insulare (Mello-Leitão 1923). Additionally, two new species are described from Brazil: M. buecherli n. sp. from Ilhabela, São Paulo and M. brescoviti n. sp. from São Francisco de Paula, Rio Grande do Sul.


Brittonia ◽  
1998 ◽  
Vol 50 (4) ◽  
pp. 483 ◽  
Author(s):  
Toshio Ando ◽  
Goro Hashimoto

2017 ◽  
Vol 92 (4) ◽  
pp. 514-519 ◽  
Author(s):  
M. Knoff ◽  
J.N. Santos ◽  
E.G. Giese ◽  
D.C. Gomes ◽  
Â.T. Silva-Souza

AbstractA new species of the genus Diomedenema, a spiruromorph nematode, collected from the lung of Spheniscus magellanicus (Sphenisciformes) found on the southern coast of the state of Rio Grande do Sul, Brazil, is described. The new species is differentiated from the only previously described species of the genus, D. diomedeae Johston & Mawson, 1952, by males possessing a set of caudal papillae with three pairs of precloacal, two pairs of adcloacal and one pair of postcloacal papillae; precloacal papillae with the papillae of the first two pairs being closer to each other than those of the third pair; a longer and pointed tail in males; and females with the vulva at mid-body. This is the first report of a nematode infecting the lung of a sphenisciforme host.


2006 ◽  
Vol 4 (2) ◽  
pp. 127-146 ◽  
Author(s):  
Sven O. Kullander ◽  
Carlos A. Santos de Lucena

Six species of Crenicichla, three of which are new, are recognized from the Atlantic coastal rivers of souhteastern Brazil from the state of Bahia south to the state of Rio Grande do Sul: C. mucuryna (upper rio Mucuri, Minas Gerais), C. lacustris (from the rio Paraíba do Sul north to the rio Buranhem, Bahia), C. iguapina, new species (rio Ribeira de Iguape), C. tingui, new species (from the rio Itapocu to the rio Nhundiaquara drainage), C. maculata, new species (lagoa dos Quadros, rio Maquiné, Rio Grande do Sul to rio Itapocu, Santa Catarina drainages), and Crenicichla punctata (laguna dos Patos basin). Crenicichla biocellata is a synonym of C. lacustris; and also a secondary homonym of Sparus biocellatus, a synonym of C. saxatilis. Crenicichla dorsocellata is also a synonym of C. lacustris.


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