taxonID	type	description	language	source
03B087C4FF8C2050B92D708943B13A29.taxon	materials_examined	Material examined. 5 adult females, UARC 326 M. Remarks. It was one of the most abundant species in the samples. Its body is globular in lateral view, with convolute intestine (Fig. 1 A) and divergent antennules (Fig. 1 B). It can be di erentiated from its congeners by the postabdomen, which bears setae in the preanal marginal portion (Fig. 1 C) instead of spines; these setae form distinct groups (Fig. 1 D), as observed also in populations from Mexico, the U. S. A. and Brazil (Smirnov, 1992; Gar a-Espejo and Elías-Gutierrez, 2003), although they are not grouped in the population from the Nhamundá River (Smirnov, 1992). Body length is between 0.21 and 22 mm, average: 0.22 mm (n = 5). Distribution. It has been recorded in the Neotropical, Nearctic and Oriental regions (Kotov et al., 2013); nevertheless, the population from China recorded by Chian and Du (1979) is considered to be a doubtful identi cation (Smirnov, 1992). is is the rst record from the Orinoco region and Colombia.	en	Granados-Martínez, Juan M. Fuentes-Reinés Lourdes M. A. Elmoor-Loureiro Cristian E. (2018): New records of Cladocera (Crustacea: Branchiopoda) from the Tomo River, Vichada, Colombia. Nauplius (e 2018006) 26: 1-12, DOI: 10.1590/2358-2936e201800610.1590
03B087C4FF8C2057BB5B77B4444E3AB1.taxon	materials_examined	Material examined. 2 adult females, UARC 316 M – UARC 320 M. Remarks. Alona isabellae was originally described by Sousa et al. (2016) based on specimens previously identi ed as Alona intermedia Sars, 1862 in Brazil (see Sousa et al., 2016). Its body is oval (Fig. 1 E), maximum height at middle of body, body height / length ratio about 0.63 µm, body length = 0.27 mm, average: 0.27 mm (n = 2), head with two major pores connected (Fig. 1 F), postabdomen about 2.6 times as long as wide (Fig. 2 A), with nine lateral fascicles and ten postanal marginal denticles. IDL and ODL of limb I with three and one setae respectively. Limb II with inner portion armed with eight scrapers, rst and second ones di erent in size. Alona isabellae can be easily separated from other members of the Alona intermedia- group by the peculiarities of the spinule of distalmost fascicles, which is thicker than the others and goes beyond the postabdomen margin and the marginal denticles (arrowed in Fig. 2 A, B). Another important diagnostic feature is the labrum with two short and ne spinules on the anterior margin and a cluster of setules on the posterior margin (Fig. 2 C). ese two distinctive characters are present in the Colombian specimens. e specimens from Colombia have diagnostic features of A. isabellae as described by Sousa et al. (2016). ere are, however, some small di erences in our specimens: (1) proximal and distal denticles of the postabdomen with ne spinules in the populations from Brazil (Sousa et al., 2016, fig. 7 O), while in Colombian populations this structure is only absent in distal denticles (Fig. 2 B, present data); (2) scraper 4 and 5 of limb II di erent in length in specimens from Colombia (Fig. 2 D), while they are of the same size in Brazilian populations (Sousa et al., 2016, g. 8 F). Overall, these di erences are deemed to be intraspeci c variations and thus expand the knowledge on the morphometric variability of this species. Distribution. Alona isabellae is so far known only from Brazil (Sousa et al., 2016) and Colombia (present study). Some records of A. intermedia have been recorded from Venezuela, Peru, and Paraguay (Daday, 1905; Stingelin, 1906; Delachaux, 1918; Rey and Vazquez, 1986), and these reports could correspond to A. isabellae or to a new species; nevertheless, an exhaustive review of these records is required.	en	Granados-Martínez, Juan M. Fuentes-Reinés Lourdes M. A. Elmoor-Loureiro Cristian E. (2018): New records of Cladocera (Crustacea: Branchiopoda) from the Tomo River, Vichada, Colombia. Nauplius (e 2018006) 26: 1-12, DOI: 10.1590/2358-2936e201800610.1590
03B087C4FF89205BB931772E40263956.taxon	materials_examined	Material examined. 1 adult female, catalog number: UARC 321 M – UARC 325 M. Remarks. Eight valid species of the genus Disparolona have been described worldwide: Disparolona rostrata (Koch, 1841), Disparolona acutirostris (Birge, 1879); D. hamata; Disparolona leei (Chien Shing-ming, 1970); Disparolona caudata Smirnov, 1996; Disparolona leptorhyncha Smirnov, 1996; Disparolona ikarus Kotov and Sinev, 2011 and Disparolona smirnovi Klimovsky, 2015. Of these, D. leptorhyncha and D. hamata have been recorded in the Neotropics, and the la er was originally described as Pleuroxus hamatus by Birge (1879) from North America; however, Smirnov (1996) allocated the species to the genus Disparalona. e specimen from Colombia has an elongated body, and the posterior portion of body is remarkable lower than the anterior (Fig. 3 E), short rostrum (Fig. 3 F), and valve with ne striae (arrowed in Fig. 4 A). Antenna of moderate size (Fig. 4 B), the proximal segments of each branch are twice as long as and more massive than the other two, antennal formula: setae 0 - 0 - 3 / 0 - 1 - 3, rst endopodal segment with a small spine (arrowed in Fig. 4 B). Keel not prominent, distal portion short and rounded. Postabdomen about 3.4 times as long as wide, with preanal angle not prominent (Fig. 4 C); postabdominal claw with two basal spines, the distal about 0.25 the length of the claw and the proximal two times shorter than the proximal one (Fig. 4 D). IDL of limb I with three setae, the seta 3 is hook-like (Fig. 4 E, F), ODL with one long and one short accessory seta, the outer one very short (Fig. 4 E) which was variable in size (arrowed in Fig. 4 F). Limb II with eight scrapers, the seta of exopodite is longer than scrapers 8, 7, 6 and 4 (Fig. 5 A). Exopodite of limb III is rectangular, with two lateral setae (5 – 6) and four distal setae (1 – 4) (Fig. 5 B); seta 7 was not observed and, taking into account that only one specimen was examined, it is probable that it could be due to variability or it could have been broken. Nevertheless, more specimens should be examined and observed to con rm it. e exopodite of limb IV is oval with seven setae (1 – 7) (Fig. 5 C). Epipodite of limb V ovoid; exopodite with two hillocks densely setulated near the inner limb portion (arrowed in Fig. 5 E) and a single distal (1) and three lateral (2 – 4) setae (Fig. 5 D, E); inner limb portion elongated (Fig. 5 F), with setulated inner margin, with two setae of equal size; lter comb with three setae. e specimen from Colombia bears the diagnostic features of D. hamata reported by the authors based on the study of material from Venezuela, Brazil, Sudan and Mali (Rey and Vásquez, 1986; Zoppi de Roa and Vásquez, 1991; Smirnov, 1996; Elmoor-Loureiro, 1997). However, some subtle differences can be observed in our specimen: (1) the outer small seta of the ODL of limb I is absent in gures of specimens from Venezuela (Rey and Vásquez, 1986, pl. V, g. 14; Zoppi de Roa and Vásquez, 1991, g. 10 B), whereas it is present in populations from Colombia (present data, Fig. 4 D, E); (2) the exopodite of limb IV bears seven setae in specimens from Colombia (present data, Fig. 5 B), whereas populations from Venezuela have six (Zoppi de Roa and Vásquez, 1991, g. 10 I), and probably these two structures were overlooked in specimens from Venezuela owing to their size. Unfortunately, Smirnov (1996) and Elmoor-Loureiro (1997) did not illustrate these structures, making comparisons impossible.	en	Granados-Martínez, Juan M. Fuentes-Reinés Lourdes M. A. Elmoor-Loureiro Cristian E. (2018): New records of Cladocera (Crustacea: Branchiopoda) from the Tomo River, Vichada, Colombia. Nauplius (e 2018006) 26: 1-12, DOI: 10.1590/2358-2936e201800610.1590
03B087C4FF89205BB931772E40263956.taxon	distribution	Distribution. It has a wide distribution and is a complex of species with, probably, local endemism. D. hamata has been reported in Afrotropical, Nearctic, Neotropical, Palaearctic, and Oriental regions (Kotov et al., 2013). Nevertheless, the Oriental population could be a new species (Sinev and Sanoamuang, 2011); therefore, further analysis of D. hamata is required. Ecology. e surveyed area was dominated by Campsiandra comosa, which is one of the typical plants of the zone. Cladocerans were most numerous in habitats associated with the roots of plants. e water temperature during sampling was 30.2 ° C, conductivity 6.7 S. cm – 1 value, pH 6.6, and dissolved oxygen 8.2 mg / L.	en	Granados-Martínez, Juan M. Fuentes-Reinés Lourdes M. A. Elmoor-Loureiro Cristian E. (2018): New records of Cladocera (Crustacea: Branchiopoda) from the Tomo River, Vichada, Colombia. Nauplius (e 2018006) 26: 1-12, DOI: 10.1590/2358-2936e201800610.1590
