taxonID	type	description	language	source
663D781D8D42FFEDC0ECF9E8FBFD5ED1.taxon	description	(Fig. 2 A – C) Material examined: One adult parthenogenetic female (FDRS 486). Remarks: Species previously identified as the Palearctic Acroperus harpae (Baird, 1834), but Sinev and Elmoor-Loureiro (2010) confirmed species status for Neotropical populations. The only species of the genus with Neotropical distribution, Acroperus tupinamba is easily recognized because it has dorsal keel well-expressed, posteroventral corner of valves with 1 – 3 denticles with setulae between them. Besides, A. tupinamba differs from the other two species of the genus by longer posterior setae on the valves, shorter and wider postabdomen (length / height ratio 3.2), shorter setulae near to base of postabdominal claw and spoon-like setae 1 – 2 on the exopodite of the fourth limb. Distribution: Neotropics (Rey and Vasquez, 1986; Sinev and Elmoor-Loureiro, 2010; Debastiani-Júnior et al., 2015). In Brazil, A. tupinamba occurs in the Amazônica, Paraguai, Paraná, São Francisco, Parnaíba and Atlântico Sudeste hydrographic regions (Elmoor-Loureiro, 2017).	en	Elmoor-Loureiro, Francisco Diogo R. Sousa Elisângela Reis Rangel Mariana Lessa Carneiro da Silva Ciro Y. Joko Lourdes M. A. (2017): An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the fi rst description of a male of Leydigiopsis ornata Daday, 1905. Nauplius (e 2017029) 25: 1-13, DOI: 10.1590/2358-2936e2017029, URL: https://doi.org/10.1590/2358-2936e2017029
663D781D8D42FFEBC3F4F88AFD295B84.taxon	description	(Fig. 2 D – G) Material examined: One adult parthenogenetic female (FDRS 487) Remarks: The single known species of affinis - group from the Neotropics. Recently, a new subspecies from North America was described based on male morphology, Alona ossiani herricki Sinev, 2013 (Sinev, 2013). Regarding Brazilian fauna, A. ossiani has a singular morphology and can be recognized by elongate body with length reaching over 1 mm, posterior border of head shield triangular and two connected main head pores; postanal margin elongated with about 50 % of length of postabdomen itself, distal angle rounded, 15 – 17 merged marginal denticles. Distribution: Neotropics (Sinev, 1998; Sinev and Silva-Briano, 2012). In Brazil, A. ossiani occurs in the Amazônica, Tocantins / Araguaia, Paraná, Paraguai, São Francisco, Atlântico Nordeste Ocidental, Nordeste Oriental, Leste, Sudeste, and Sul hydrographic regions (Elmoor-Loureiro, 2017; Sousa et al., 2014).	en	Elmoor-Loureiro, Francisco Diogo R. Sousa Elisângela Reis Rangel Mariana Lessa Carneiro da Silva Ciro Y. Joko Lourdes M. A. (2017): An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the fi rst description of a male of Leydigiopsis ornata Daday, 1905. Nauplius (e 2017029) 25: 1-13, DOI: 10.1590/2358-2936e2017029, URL: https://doi.org/10.1590/2358-2936e2017029
663D781D8D44FFEBC0DEFBBAFB1958EA.taxon	description	(Fig. 3 A – E) Material examined: One adult parthenogenetic female (FDRS 488) Remarks: The verrucosa - group has a complicated taxonomic history. It was considered a member of the artificial genus Biapertura Smirnov, 1971. More recently, Van Damme et al. (2011) raised the verrucosa - group to genus status and, at the same time, they showed the existence of a high diversity of species. Anthalona verrucosa verrucosa is easily recognized by the presence of two connected main head pores, lateral head pores with cosmaria-like sacs underneath them; lateral fascicles of postabdomen not exceeding the level of marginal denticles; single denticles on the labral keel; large proximal denticle on the IDL setae. The specimen observed at Lake Paranoá had a single main head pore. Distribution: Neotropics (Van Damme et al., 2011). Recently, Sousa et al. (2015 c) revised many populations of A. verrucosa verrucosa, indicating wide distribution of this species in Brazil.	en	Elmoor-Loureiro, Francisco Diogo R. Sousa Elisângela Reis Rangel Mariana Lessa Carneiro da Silva Ciro Y. Joko Lourdes M. A. (2017): An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the fi rst description of a male of Leydigiopsis ornata Daday, 1905. Nauplius (e 2017029) 25: 1-13, DOI: 10.1590/2358-2936e2017029, URL: https://doi.org/10.1590/2358-2936e2017029
663D781D8D44FFE6C3BBFEBBFE075E6A.taxon	description	(Figs. 3 F – G, 4 A – I) Material examined: Two adult parthenogenetic females and one adult male (FDRS 489). Description of adult male: Habitus (Fig. 4 A). Smaller and more elongated than female, length 0.60 mm, about 1.4 times as long as high; greater height close to half length of body; laterally compressed, without dorsal keel; marginal line not straight, with a depression behind middle of body. Head (Fig. 4 A). Rostrum markedly shorter than in female, about 1.2 times longer than length of antennular body; ocellusandeyeofsubequalsize. Headshield (Fig. 4 B) about two times as long as wide; posterior region triangular-shaped, apex rounded; single slot-shaped main head pore about 3 times longer than wide, tiny lateral head pores inserted at middle level of length of main pore; PP about same length of the main head pore. Labral keel (Fig. 4 D) triangular, margin slightly convex and armed with three rows of short setulae, apex not acute. Carapace (Fig. 4 A) relatively elongated, ornamentation as fine striae, ventral margin armed with 76 setae slightly plumose, strongly differentiated in groups; posteroventral corner of carapace, rounded, without denticles. Antennules (Fig. 4 G). Antennular body not exceeding the tip of rostrum, about two times as long as wide; one pair of aesthetascs laterally inserted, eight apical aesthetascs of which seven of them longer than antennular body itself. Sensory seta about same length as antennular body. Male seta short and robust, about 3.6 times shorter than antennular body length, apex sharp. Thorax and abdomen (Fig. 4 A). Thorax longer than abdomen. Abdomen armed with four rows of setulae. Postabdomen (Fig. 4 E, F). Straighter and more elongated than in females, about 2.5 times longer than wide; dorsal and ventral margins slightly convex. Anal margin as in females. Postanal margin slightly convex, armed with 16 long and slender marginal denticles unmerged, decreasing in length towards anal margin; twenty lateral fascicles, distalmost bears smaller number of setulae (3 – 4), setulae of the distalmost fascicles thicker than others; distal portion rounded. Gonopores inserted laterally near to ventral margin, at same level as postabdominal claw. Postabdominal claw (Fig. 4 E, F). Shorter than in female, with length about two times longer than anal margin; length of proximal pecten spinulae not exceeding the level of basal spines; a group of four short basal spines, inserted at some distance from the base of postabdominal claw. Limb I (Fig. 4 I). Ventral face with 13 long setulae; copulatory brush armed with many setulae, the distalmost being longer. Copulatory hook U-shaped, arms of different length. ODL bears a projection (accessory seta?) at base and a row of long and thick setulae; ODL seta slender, bi-segmented, about two times longer the IDL setae. IDL with three setae, first one markedly shorter than setae 2 – 3, which have similar length; setae 2 - 3 armed with setulae; male setae long, subequal in length to IDL setae, apex curved. Remarks: For full redescription and differential diagnosis based on parthenogenetic females see Van Damme and Sinev (2013), which also provides good illustrations and an identification key to Leydigiopsis Sars, 1901 species. The male of L. ornata is quite similar to males already described for the genus (Sinev, 2004). The presence of three rows of setulae on labral keel is unique to L. ornata male. As in females, the male of L. ornata is mainly differentiated from Leydigiopsis megalops Sars, 1901 and Leydigiopsis curvirostris Sars, 1901 by the morphology of the postabdomen. Distribution: Neotropics (Van Damme and Sinev, 2013). In Brazil, the species occurs in the Amazônica, Paraná, Paraguai, São Francisco, Atlântico Nordeste Oriental, Sudeste, and Sul hydrographic regions (Elmoor-Loureiro, 2017).	en	Elmoor-Loureiro, Francisco Diogo R. Sousa Elisângela Reis Rangel Mariana Lessa Carneiro da Silva Ciro Y. Joko Lourdes M. A. (2017): An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the fi rst description of a male of Leydigiopsis ornata Daday, 1905. Nauplius (e 2017029) 25: 1-13, DOI: 10.1590/2358-2936e2017029, URL: https://doi.org/10.1590/2358-2936e2017029
663D781D8D49FFE6C3C3FBBDFBFD5F84.taxon	description	(Fig. 5 B) Material examined: Two adult parthenogenetic females (FDRS 491). Remarks: Notoalona sculpta is part of a small group from the Chydoridae, with two other valid species (Rajapaksa and Fernando, 1987; Van Damme et al., 2013). Although an addition to its description is necessary, N. sculpta is recognized by: globular body, head pores bean-like, lateral margin of head shield without a notch; postabdomen elongated, postanal portion nearly distally armed with about 14 very short marginal denticles, distalmost lateral fascicles exceeding the margin of postabdomen. Distribution: Neotropics (Van Damme et al., 2013). In Brazil, the species occurs in the Amazônica, Tocantins / Araguaia, Paraná, Paraguai, São Francisco, Atlântico Nordeste Ocidental, Nordeste Oriental, Leste, Sudeste, and Sul hydrographic regions (Elmoor-Loureiro, 2017).	en	Elmoor-Loureiro, Francisco Diogo R. Sousa Elisângela Reis Rangel Mariana Lessa Carneiro da Silva Ciro Y. Joko Lourdes M. A. (2017): An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the fi rst description of a male of Leydigiopsis ornata Daday, 1905. Nauplius (e 2017029) 25: 1-13, DOI: 10.1590/2358-2936e2017029, URL: https://doi.org/10.1590/2358-2936e2017029
663D781D8D4BFFE4C13CFB72FB93597F.taxon	description	(Fig. 5 D) Material examined: Four adult parthenogenetic females (FDRS 493). Remarks: Species named in many studies as Disparalona dadayi or Phryxura dadayi, but Smirnov (1996) considered Alonella dadayi as the valid name for this species. Additionally, Fryer (1997) wrote that the description of Phryxura Müller, 1867 was based on a single abnormal specimen, making the name invalid according to the rules of the International Code of Zoological Nomenclature. Alonella dadayi has a remarkable rostrum, which is long and curved, posteroventral corner of valves with 1 – 7 denticles with short setulae between them, postabdomen with preanal angle prominent. The high variability of some morphological traits recommends a wide revision of A. dadayi. Distribution: Neotropics (Kotov et al., 2013). In Brazil it occurs in the Amazônica, Tocantins / Araguaia, São Francisco, Paraná, Paraguai, Atlântico Nordeste Oriental, Leste, Sudeste and Sul hydrographic regions (Elmoor-Loureiro, 2017).	en	Elmoor-Loureiro, Francisco Diogo R. Sousa Elisângela Reis Rangel Mariana Lessa Carneiro da Silva Ciro Y. Joko Lourdes M. A. (2017): An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the fi rst description of a male of Leydigiopsis ornata Daday, 1905. Nauplius (e 2017029) 25: 1-13, DOI: 10.1590/2358-2936e2017029, URL: https://doi.org/10.1590/2358-2936e2017029
663D781D8D4BFFE4C3C1FE22FB325D2C.taxon	description	(Fig. 5 E) Material examined: Six adult parthenogenetic females (FDRS 494). Remarks: Originally described for the Neotropics, C. eurynotus has been recorded worldwide, suggesting it is a complex of species. It is recognized by rostrum acute and elongated; labral keel convex with apex not projected; postabdomen narrow with distinct postanal angle, 7 – 11 marginal denticles of which two-three most distal longer than others, postabdominal claw with 5 – 7 strong spinulae on the proximal pecten. According to Kotov et al. (2013), it is a species with one valid subspecies: C. eurynotus strictomarginatus Paggi, 1972. Distribution: presumed Cosmopolitan (Kotov et al., 2013). In Brazil, it occurs in Amazônica, Tocantins / Araguaia, Paraná, Paraguai, São Francisco, Atlântico Nordeste Ocidental, Nordeste Oriental, Leste, Sudeste and Sul (Elmoor-Loureiro, 2017).	en	Elmoor-Loureiro, Francisco Diogo R. Sousa Elisângela Reis Rangel Mariana Lessa Carneiro da Silva Ciro Y. Joko Lourdes M. A. (2017): An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the fi rst description of a male of Leydigiopsis ornata Daday, 1905. Nauplius (e 2017029) 25: 1-13, DOI: 10.1590/2358-2936e2017029, URL: https://doi.org/10.1590/2358-2936e2017029
663D781D8D4BFFE4C12BFEE7FE065B9F.taxon	description	(Fig. 5 C) Material examined: One adult parthenogenetic female (FDRS 492). Remarks: The only species of the genus (Van Damme et al., 2005; Elmoor-Loureiro et al., 2009), it has a very particular morphology: body sub-ovoid, rostrum short and protruding, three main head pores connected, postabdomen wide with large and broad postanal portion, marginal denticles in groups. Distribution: Possibly in the Neotropics (Van Damme et al., 2005; Elmoor-Loureiro et al., 2009; Fuentes-Reines, 2015). In Brazil, P. parva occurs in the Tocantins / Araguaia, Paraná, Atlântico Nordeste Ocidental and Nordeste Oriental hydrographic regions (Elmoor-Loureiro, 2017).	en	Elmoor-Loureiro, Francisco Diogo R. Sousa Elisângela Reis Rangel Mariana Lessa Carneiro da Silva Ciro Y. Joko Lourdes M. A. (2017): An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the fi rst description of a male of Leydigiopsis ornata Daday, 1905. Nauplius (e 2017029) 25: 1-13, DOI: 10.1590/2358-2936e2017029, URL: https://doi.org/10.1590/2358-2936e2017029
663D781D8D4BFFE5C366FA75FEE95A6E.taxon	description	(Figs. 5 F – H) Material examined: One adult parthenogenetic female (FDRS 495). Remarks: Initially identified by Sars (1901) from São Paulo as Chydorus poppei Richard, 1897. Later, Bergamin (1939) noted differences in the valves and labral keel from C. poppei, which led to a description of a new species, Chydorus tridentatus Bergamin, 1939. Finally, Frey (1982) assigned the Ephemeroporus Frey, 1982 genus to a species with similar morphology of the Chydorus barroisi - group. Ephemeroporus tridentatus is recognized by the following combination of morphological traits: labral keel armed with three teeth and posteroventral corner of valves without denticles. Distribution: According to Kotov et al. (2013) the species occurs in Neotropics and Oriental zone. In Brazil, the distribution of E. tridentatus extends through the Amazônica, Tocantins / Araguaia, Paraná, Paraguai, Parnaíba, Atlântico Nordeste Oriental, Leste and Sudeste hydrographic regions (Elmoor-Loureiro, 2017).	en	Elmoor-Loureiro, Francisco Diogo R. Sousa Elisângela Reis Rangel Mariana Lessa Carneiro da Silva Ciro Y. Joko Lourdes M. A. (2017): An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the fi rst description of a male of Leydigiopsis ornata Daday, 1905. Nauplius (e 2017029) 25: 1-13, DOI: 10.1590/2358-2936e2017029, URL: https://doi.org/10.1590/2358-2936e2017029
