Hyalella dielaii sp. nov. from São Paulo, Brazil (Amphipoda, Hyalellidae)

Abstract

Hyalella dielaii sp. nov., from São Paulo, Brazil, is herein described and illustrated. Dorsal margin of single ramus of uropod 3, with two marginal groups of three spines, is the main diagnostic characteristic for this new species. Among other distinctive features that may help to distinguish it are the inner plate of the maxilla 1 distinctly long and thin and the dactylus very short of male gnathopod 2 very short.<br>Hyalella dielaii sp. nov., encontrada em São Paulo, Brasil, é aqui descrita com ilustrações. O urópodo 3 com dois grupos de três espinhos na margem dorsal do ramo único, é a principal característica diagnóstica para esta nova espécie. Entre outras características específicas, o ramo interno da maxila 1 distintamente longo e delgado e o dáctilo curto do gnatópodo 2 do macho, também auxiliam na caracterização

Distributional patterns of the South American species of Hyalella (Amphipoda: Hyalellidae)

“…Distributional data for this study were obtained from the literature (Lopretto 1982(Lopretto , 1983aPereira, 1985, 1989Pereira et al 1985, 1989Stock and Plavoet 1991;Bond-Buckup and Araujo 1998;Casset et al 2001;González and Coleman 2002;González andWattling 2002a-c, 2003a-d;Carrera and Günkel 2003;González 2003;Jergentz et al 2004;Pereira 2004;Coleman & González, 2006;Galan & Herrera, 2006;González et al 2006;Da Silva and BondBuckup 2008;Dos Santos et al 2008;Dutra et al 2008;Zilli et al 2008;Rauque and Semenas 2009;Spaccesi & Rodríguez. 2009;De los Ríos et al 2007, 2010De los Ríos and Roa 2010;Cardoso et al, 2011;Bastos-Pereira & De Padua-Bueno, 2012 (Brehm-Lunz, 1928, 1935Gonzalez & Wattling, 2003c;González et al, 2006) Coordinates of localities were obtained from the literature or calculated on maps and rounded to minutes.…”

Population structure of two freshwater amphipods (Crustacea: Peracarida: Hyalellidae) from southern Brazil

“…Information concerning ecological features of freshwater crustaceans are scarce, especially those with the order Amphipoda. In the last few years, understanding of American's Hyalella has risen with an increasing number of taxonomic publications, indicating that there is still a large number of species unknown to science (González and Watling, 2002a, 2002b, 2003a, 2003bBaldinger, 2004;Pereira, 2004;González et al, 2006;Cardoso et al, 2011;Bueno et al, 2013;Rodrigues et al, 2014;Cardoso et al, 2014;Colla and César, 2015). In Brazil, most studies of Hyalella concern new species descriptions (Bastos- Pereira and Bueno, 2013;Bueno et al, 2013;Cardoso et al, 2014;Bueno et al, 2014;Streck et al, 2017), however, knowledge on their life cycles, population biology e reproductive biology are limited by the studies of Castiglioni and Bond-Buckup (2008a) (Hyalella castroi González, Bond-Buckup andAraujo, 2006 andHyalella pleoacuta González, Bond-Buckup andAraujo, 2006), Castiglioni et al (2016) (Hyalella bonariensis Bond-Buckup, Araujo and Santos, 2008) and Ozga and Castiglioni (2017) Streck and Castiglioni, 2017).…”

Egg production of two sympatric species ofHyalellaSmith, 1874 (Crustacea, Amphipoda, Dogielinotidae) in aquaculture ponds in southern Brazil

“…Of these, 13 occur in Brazil (González and Watling 2002;Pereira 2004;González et al 2006). Species of Hyalella are found across a variety of permanent freshwater types, from large lakes to small ponds and marshes, clinging to vegetation, swimming in the water column, or burrowing in bottom sediments, where they are important members of the benthos (Kruschwitz 1978;Wellborn 1995).…”