Alona kaingang (Crustacea, Cladocera, Aloninae): a new species of the pulchella-group, with identification key to Neotropical species

Abstract

Background: The subfamily Aloninae has been the focus of extensive studies on the Chydoridae because it has a higher diversity of species and due to the necessity of a detailed redescription of many taxa, especially using characters related to thoracic appendages. The polyphyletic genus Alona was redefined recently, and many species complexes were translocated to natural groups. The pulchella-group is a candidate for removal from Alona because it forms a well-defined complex of species, besides possessing higher species diversity. At present, 50 % of the known species occur in the Neotropics.

A new subspecies of Ovalona setulosa (Megard, 1967) (Cladocera: Anomopoda: Chydoridae) from the Caribbean coast of Colombia

“…O. altiplana have shorter postabdomen with longer postanal denticles, length of five distalmost ones exceed the width of postabdominal claw base (Kotov et al 2010). O. kaingang have broadly rounded distal angle of postabdomen and more narrow, widely spaced postanal lateral fascicles of setulae; distance between fascicles about half or more fascicle width (Sousa et al 2015a).…”

“…At the moment, five species of Ovalona are known from South America: O. glabra is distributed through the whole continent, including Andes; O. nigra and O. altiplana are endemics of Andes (Sinev, 2015); O. kaingang is known from South-East Brazil (Sousa et al 2015a); and O. setulosa arangureni ssp. nov. so far only known from Colombia.…”

Position of the dentifera-group in the Coronatella-branch and its relocation to a new genus: Magnospina gen. n. (Crustacea, Chydoridae, Aloninae)

“…n.; however, analogous variation in these structures was already observed in Euryalona (Rajapaksa and Fernando 1987). Species-groups of Alona sensu lato, such as the costata -group (Sinev 1999b, 2001a, 2008, Van Damme and Eggermont 2011, Van Damme et al 2011b), verrucosa -group (Van Damme et al 2011a, Sinev and Kotov 2012), rectangula -group (Van Damme and Dumont 2008b, Sousa et al 2015a), and pulchella -group (Sinev 2001b, c, 2009, Sinev and Silva-Briano 2012, Van Damme et al 2013, Sousa et al 2015b) also have differences in structures on head, postabdomen, and limbs.…”

Comunidade zooplanctônica de dois corpos d'água em uma área prioritária de conservação no município de Guaxupé - MG

“…As contagens e identificação dos organismos foram realizadas sob microscópio estereoscópio, com aumento de 50x e microscópio óptico com aumento de até 1000x. A identificação dos organismos foi realizada utilizando-se bibliografia especializada (SMIRNOV, 1974;SMIRNOV, 1996;KOSTE, 1978;REID, 1985;SEGERS, 1995;ELMOOR-LOUREIRO, 1997;HARDOIM, 1997;ELMOOR-LOUREIRO, 2006;SOUSA et al, 2015).…”