Ectrepopterus uruguayensis Fowler was recently redescribed, with occurrence in lower tributaries of Río de la Plata and lower Río Uruguay, Uruguay. Herein its occurrence is extended and confirmed to Argentina, arroyo El Molino, in Uruguay Department, Entre Ríos Province, Uruguay drainage.Fil: Miquelarena, Amalia Maria. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Carvalho, Fernando R.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasi

Carvalho, Fernando R.

Miquelarena, Amalia Maria

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Journal of species lists and distributionChec List1043Notes oN GeoGraphic DistributioNCheck List 9(5): 1043–1045, 2013© 2013 Check List and AuthorsISSN 1809-127X (available at www.checklist.org.br)The monotypic genus Ectrepopterus Fowler was recently resurrected by Malabarba et al. (2012) for Megalamphodus uruguayensis Fowler, a small-sized fish (up to 47.4 mm SL) which habit the Uruguayan drainages (figure 7 of Malabarba et al. 2012). Diagnostic characters for genus include: i) an incomplete foramen in posterior region of metapterygoid, that serves as passage for the ramus mandibularis of the trigeminus nerve, bordered posteriorly by the hyomandibula and forming an incomplete arch; ii) pectoral-fin rays bearing hooks; iii) posterior margin of second infraorbital posteroventrally oblique and second infraorbital ventrally bordering anterior region of third infraorbital; iv) fourth infraorbital more developed longitudinally than dorsoventrally; v) ascending process of premaxilla reaching just anterior end of nasal, vi) and lateral line interrupted (Malabarba et al. 2012).Besides these characters, a conspicuous feature of Ectrepopterus uruguayensis Fowler is the zigzag pattern of narrow stripes on body (Figure 1), like Hollandichthys Abstract: Ectrepopterus uruguayensis Fowler was recently redescribed, with occurrence in lower tributaries of Río de la Plata and lower Río Uruguay, Uruguay. Herein its occurrence is extended and confirmed to Argentina, arroyo El Molino, in Uruguay Department, Entre Ríos Province, Uruguay drainage.1 Museo de La Plata, División Zoología Vertebrados. CONICET-La Plata. Paseo del Bosque s/n°, 1900. La Plata, BA, Argentina.2 UNESP, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Instituto de Biociências, Letras e Ciências Exatas, Departamento de Zoologia e   Botânica, Programa de Pós-Doutoramento, Laboratório de Ictiologia, Rua Cristóvão Colombo, 2265, Jardim Nazareth, 15054-000 São José do Rio   Preto, SP, Brazil.*  Corrresponding author. E-mail: frcarvalho2004@yahoo.com.brAmalia M. Miquelarena 1* and Fernando R. Carvalho 2Actinopterygii, Characiformes, Characidae: Ectrepopterus uruguayensis (Fowler, 1943): New record for Argentinamultifasciatus Eigenmann. This condition, probably, leaded Reichert Lang (2001, p. 104) erroneously identify Ectrepopterus uruguayensis as Hollandichthys multifasciatus in Uruguay country.In the original description, Fowler (1943) proposed as diagnose to Megalamphodus uruguayensis (= Ectrepopterus uruguayensis) the lower lobe of the caudal fin longer than the upper lobe. This character is broadly found in the small Characidae, and not constitutes a diagnostic character for genus, as noted by Malabarba et al. (2012), because it is greatly variable amidst specimens. The photographed specimen from the arroyo El Molino (Figure 1) shows this condition, which is absent in the specimen of the figure 5 by Malabarba et al. (2012).Fowler (1943) described Megalamphodus (Ectrepopterus) uruguayensis (= E. uruguayensis) from Uruguay, providing no further locality data. Ever since, few specimens or records for species has been cited in the literature (Géry 1972; Géry 1977; Weitzman and Palmer 1997; Thomaz et al. 2010), until to redescription and Figure 1. Ectrepopterus uruguayensis, ILPLA 1817, female, 44.6 mm SL, El Molino Creek, Entre Ríos Province, Argentina.1044Miquelarena and Carvalho | New record of Ectrepopterus uruguayensis for Argentinaresurrection of Ectrepopterus by Malabarba et al. (2012), that listed many lots of this species but all them restricted to Uruguay.For Argentina, Ectrepopterus uruguayensis was mentioned by Menni (2004) (as Hyphessobrycon uruguayensis), but no voucher specimens was found in collections to confirm this record. Herein we record the occurrence of this species, which was collected in an expedition in November 24, 2006 (by E. Etcheverry and L. Protogino, in the El Molino Creek (Figure 2). This stream flows into the Uruguay River, Entre Ríos Province, Uruguay Department. Two female specimens of Ectrepopterus uruguayensis were collected with seine and deposited at Instituto de Limnología “Dr. Raúl A. Ringuelet” (ILPLA), La Plata, Argentina (ILPLA 1817). Figure 2. Geographical record of Ectrepopterus uruguayensis in Argentina: arroyo del Molino, Entre Ríos Province, Uruguay Department, Uruguay River drainage.Counts and measurements in both individuals followed Fink and Weitzman (1974). Measurements were made with a caliper rule to the nearest 0.01 mm, on the left side of the specimen, and presented as percents of standard length (SL) or head length (HL). Counts of vertebrae, supraneurals, gill-rakers of the first arch, branchiostegal rays, procurrent caudal-fin rays, and small dentary teeth were taken in cleared and stained (c&s) individual prepared according to Taylor and van Dyke (1985). Vertebral counts include the four vertebrae in the Weberian apparatus and the fused PU1+U1 of the caudal region as a single element. Morphometric and meristic data are presented in Table 1. Our observations are congruent with the data provided by Malabarba et al. (2012), except for ‘Predorsal distance’, here 56.1-56.6% SL (vs. 57.0-61.3% SL) and Head length 26.9-27.1% SL (vs. 27.5-32.8% SL). These differences are minimal, and reflect the variability/polymorphism of populations of same species.El Molino creek is a relatively extensive watercourse, with sections about 50 m wide and pools over 2 m deep. The banks are vegetated with grasses and other plants, and the bottom consists of mud and clay (Figure 3). Ectrepopterus uruguayensis were found in river- side of stream (ca. 32°25’S 58°16’W), in low population density. Species collected syntopically with E. uruguayensis were: Cyphocharax spilotus, Steindachnerina biornata (Curimatidae); Characidium rachovii, C. tenue (Crenuchidae); Astyanax sp. A, Astyanax sp. B, Astyanax sp. C, Bryconamericus stramineus, Charax stenopterus, Cheirodon interruptus, Diapoma terofali, Oligosarcus jenynsii (Characidae); Hoplias malabaricus (Erythrinidae); Hisonotus maculipinnis, Hypostomus commersonii (Loricariidae); Cnesterodon decemmaculatus (Poeciliidae); Australoheros cf. facetus, A. scitulus, Crenicichla scotti, and Gymnogeophagus meridionalis (Cichlidae).Additional examined material: All from Uruguay: ANSP 70331, holotype, female, 29.2 mm SL, 1935, F. Felippone. UFRGS 7899, 39.7 mm SL, arroyo Chapicuy Chico, tributary of Río Uruguay on road 3, Paysandu, Paysandu, 31°37’20”S 57°52’51”W, 10 Sep 2005, L. R. Malabarba and party. UFRGS 7909, 9, 33.1-40.2 mm SL, cañada Cecilia on road 3, km 512, Salto, Salto, 31°16’01”S 57°46’42”W, 9 Sep 2005, L. R. Malabarba and party. UFRGS 7918, 2, 38.9-44.4 mm SL, cañada on road 4, tributary of Río Queguay Grande, Paysandu, Paysandu, 32°12’25”S CHARACTER A BStandard length (mm) 40.0 44.6Percents of standard lengthPredorsal distance 56.1 56.3Prepelvic distance 49.6 50.6Prepectoral distance 31.0 29.5Preanal distance 62.6 65.7Deph at dorsal-fin origin 46.7 42.6Caudal peduncle depth 14.2 14.4Caudal peduncle length 9.6 10.4Anal-fin base 31.0 29.9Dorsal-fin base 29.1 28.6Pelvic-fin length 19.8 16.3Pectoral-fin length 19.6 19.0Head length 27.1 26.9Percents of head lengthSnout length 21.8 24.4Upper jaw length 56.5 55.7Orbital diameter 39.0 37.3Interorbital width 32.7 32.1CountsDorsal-fin rays ii,9 ii,9Pectoral-fin rays i,10 i,12Pelvic-fin rays i,7 i,7Anal-fin rays iii,23 iii,22Caudal principal rays i,17,i i,17,iDorsal procurrent rays - 11Ventral procurrent rays - 8Perforated scales 7 7Scale longitudinal series 35 34Scale rows/dorsal-fin origin > lateral line 7 7Scale rows/lateral line > pelvic-fin origin 5 5Predorsal scales 12 11Scale rows around caudal peduncle 14 14Anal-fin base scales 8 8Total vertebrae - 33Supraneurals - 6Gill rakers on upper limb - 6Gill rakers on lower limb - 11Premaxilla teeth - 7Maxilla teeth - 10Dentary teeth - 5+13Table 1. Morphometric and meristic data of two females of Ectrepopterus uruguayensis from arroyo El Molino, Uruguay Department, Entre Ríos, Argentina Province.1045Miquelarena and Carvalho | New record of Ectrepopterus uruguayensis for ArgentinaReceived: February 2013Accepted: June 2013Published online: October 2013Editorial responsibility: Tiago Pinto CarvalhoLiterature CitedFink, W.L. and S.H. Weitzman. 1974. The so-called Cheirodontin fishes of Central America with descriptions of two new species (Pisces: Characidae). Smithsonian Contributions of Zoology 172: 1-46.Fowler, H.W. 1943. Notes and descriptions of new or little known fishes from Uruguay. Proceedings of the Academy of Natural Science of Philadelphia 95: 311-334.Géry, J. 1972. Corrected and supplemented descriptions of certain characoid fishes described by Henry W. Fowler, with revisions of several of their genera. Studies on the Neotropical Fauna 7: 1-35.Géry, J. 1977. Characoids of the World. Neptune City: T.H.F. Publications. 672 p.Reichert Lang, J.J. 2001. Atlas ilustrado de los peces de agua dulce del Uruguay. Rocha: PROBIDES. 327 p. Malabarba, L.R., V.A. Bertaco, F.R. Carvalho and T.O. Litz. 2012. Revalidation of the genus Ectrepopterus Fowler (Teleostei: Characiformes), with the redescription of its type species, E. uruguayensis. Zootaxa 3204: 47-60.Menni, R.C. 2004. Peces y ambientes en la Argentina continental. Monografias del Museo Argentino de Ciencias Naturales, No 5, Buenos Aires. 316 p.Taylor, W.R. and G.C. Van Dyke. 1985. Revised procedures for staining and clearing small fishes and other vertebrates for bone and cartilage study. Cybium 9: 107-119.Thomaz, A.T., L.R. Malabarba and S.L. Bonatto. 2010. The phylogenetic placement of Hollandichthys Eigenmann 1909 (Teleostei: Characidae) and related genera. Molecular Phylogenetics and Evolution 57(3): 1347-1352.Weitzman, S.H. and L. Palmer. 1997. A new species Hyphessobrycon (Teleostei: Characidae) from the Neblina region of Venezuela and Brazil, with comments on the putative ‘rosy tetra clade’. Ichthyological Exploration of Freshwaters 7(3): 209-242.Figure 3. Arroyo del Molino in Entre Ríos Province, Argentina: locality of record of Ectrepopterus uruguayensis.57°12’47”W, 10 Sep 2005, L. R. Malabarba and party. UFRGS 7945, 36.9 mm SL, cañada on road 4, tributary of Río Queguay Chico, Paysandu, Paysandu, 32°01’57”S 57°19’30”W, 10 Sep 2005, L. R. Malabarba and party.Acknowledgments: We wish thank to Tiago Carvalho (University of Louisiana at Lafayette) by photos of Ectrepopterus uruguayensis; Vinicus Bertaco (FZB) by suggestions and information, and Juan Marcos Mirande (CONICET) by suggestions in the review. FRC is supported by a postdoctoral fellowship from FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo) (proc. 2011/11422-8).

Actinopterygii, Characiformes, Characidae: Ectrepopterus uruguayensis (Fowler, 1943): New record for Argentina

Ectrepopterus uruguayensis Fowler was recently redescribed, with occurrence in lower tributaries of Río de la Plata and lower Río Uruguay, Uruguay. Herein its occurrence is extended and confirmed to Argentina, arroyo El Molino, in Uruguay Department, Entre Ríos Province, Uruguay drainage

Miquelarena,Amalia

Carvalho,Fernando R.

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Actinopterygii, Characiformes, Characidae: Ectrepopterus uruguayensis (Fowler, 1943): new record for Argentina

Ectrepopterus uruguayensis Fowler was recently redescribed, with occurrence in lower tributaries of Río de la Plata and lower Río Uruguay, Uruguay. Herein its occurrence is extended and confirmed to Argentina, arroyo El Molino, in Uruguay Department, Entre Ríos Province, Uruguay drainage.</jats:p

Amalia M. Miquelarena

Fernando R. Carvalho

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Amalia Miquelarena

Fernando Carvalho

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Miquelarena, Amalia

Carvalho, Fernando

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Ectrepopterus uruguayensis Fowler was recently redescribed, with occurrence in lower tributaries of Río de la Plata and lower Río Uruguay, Uruguay. Herein its occurrence is extended and confirmed to Argentina, arroyo El Molino, in Uruguay Department, Entre Ríos Province, Uruguay drainage. © 2013 Check List and Authors.Museo de La Plata División Zoología Vertebrados CONICET-La Plata, Paseo del Bosque s/n, 1900 La Plata, BAUNESP Universidade Estadual Paulista 'Júlio de Mesquita Filho' Instituto de Biociências Letras e Ciências Exatas Departamento de Zoologia e Botânica Laboratório de Ictiologia, Rua Cristóvão Colombo, 2265 Jardim Nazareth, 15054-000 São José do Rio Preto, SPUNESP Universidade Estadual Paulista 'Júlio de Mesquita Filho' Instituto de Biociências Letras e Ciências Exatas Departamento de Zoologia e Botânica Laboratório de Ictiologia, Rua Cristóvão Colombo, 2265 Jardim Nazareth, 15054-000 São José do Rio Preto, S

Miquelarena, Amalia M.

Carvalho, Fernando R. [UNESP]

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Actinopterygii, Characiformes, Characidae: Ectrepopterus uruguayensis (Fowler, 1943): New record for Argentina

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