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Hyphessobrycon lucenorum, paratypes: a) MZUSP 115522, female, 32,9 mm SL; b) UFRO-I 22724, male, 29,1 mm SL, immediately after capture.
Source publication
A new species of characid is described from the upper rio Machado, a tributary of the rio Madeira basin, Rondônia, Brazil. Hyphessobrycon lucenorum can be distinguished from all congeners by the unique combination of the presence of a conspicuous rounded humeral blotch and a broad and diffuse longitudinal stripe. The new species is included within...
Contexts in source publication
Context 1
... The new species is known from its type locality, a headwater tributary of igarapé Piracolina and from the igarapé Piracolina iself, which is a tributary of the upper rio Machado, rio Madeira basin, Rondônia State, Brazil (Fig. ...
Context 2
... the Chapada dos Parecis, a plateau at the western border of the Brazilian Shield, are found headwaters of eastern tributaries of the rio Madeira (i.e., the headwaters of rio Guaporé and rio Machado), from the rio Tapajós (rio Juruena and tributaries) and the upper rio Paraguai (e.g., the headwaters of rio Sepotuba, rio Cabaçal, and the rio Paraguai itself), which are separated from each other by few kilometers (Fig. 5). Britski & Lima (2008) provided a list of 26 fish species putatively endemic to the upper rio Tapajós, defined then as the portion of that river basin situated above the meeting of the rio Juruena and rio Teles Pires. Since then, 18 additional fish species were described that are also putatively endemic to the area (Hyphessobrycon kayabi Teixeira, Lima & Zuanon, 2014, Hyphessobrycon peugeoti Ingenito, Lima & Buckup, 2013, Moenkhausia plumbea Sousa, Netto-Ferreira & Birindelli, 2010, Moenkhausia rubra Pastana & Dagosta, 2014, Bryconamericus pinnavittatus Dagosta & NettoFerreira, 2015, Knodus dorsomaculatus Netto-Ferreira & Ferreira, 2010, Rhinopetitia potamorhachia NettoFereira, Birindelli, Sousa & Menezes, 2014, Creagrutus nigrotaeniatus Dagosta & Pastana, 2014, Utiaritichthys esguiceroi Pereira & Castro, 2014, Corydoras apiaka Espíndola, Spencer, Rocha & Britto, 2014, Hisonotus bockmanni Carvalho & Datovo, 2012, Pseudancistrus kayabi Silva, Roxo & Oliveira, 2015, Centromochlus meridionalis Sarmento-Soares, Cabeceira, Carvalho, Zuanon & Akama, 2013, Tatia melanoleuca Vari & Calegari, 2014, Gelanoglanis pan Calegari, Reis & Vari, 2014, Hassar shewellkeimi Sabaj-Pérez & Birindelli, 2013, Melanorivulus kayabi (Costa, 2008, and Crenicichla chicha Varella, Kullander & Lima, 2012). More than half of these endemic fish species from the upper rio Tapajós occur in the headwater areas draining the Chapada dos Parecis, which suggests that this portion of the rio Tapajós basin, formed by the rivers draining the headwaters of the rio Juruena and its major tributary the rio Arinos, has an apparently endemic ichthyofauna that differs from other rivers of the east bank of the Amazon, including from the rio Teles Pires basin. Recent collecting activities have revealed that tributaries of the upper rio Machado and upper rio Guaporé draining the Chapada dos Parecis also present some endemism of fish species, albeit apparently a more limited one (e.g., Bryconops piracolina, Ancistrus verecundus, Odontostilbe parecis Bührnheim & Malabarba, 2006, Hyphessobrycon lucenorum and additional undescribed species of the genera Characidium, Moenkhausia, Hyphessobrycon, and Corydoras). The portions of the upper rio Paraguai draining the Chapada dos Parecis present apparently much less endemism in fishes [e.g. Knodus geryi Lima, Britski & Machado, 2004, Melanorivulus paresi (Costa, 2008 and M. bororo (Costa, 2008)], but several species occurring in this portion of the basin are also known to be shared with the upper rio Juruena basin (e.g., Lima et al., 2007;Ribeiro et al., 2013), and consequently to be endemic to this general area. The larger number of endemic fish species found in the upper rio Juruena basin when compared with the upper tributaries of the rio Madeira and rio Paraguai draining the Chapada dos Parecis might be a consequence of its larger drainage area when compared with the two remaining drainages. The presence of a high number of endemic fish species in the rivers draining the Chapada dos Parecis indicates it is a hotspot area for fish diversity, and as such as having potential priority for conservation measures. Unfortunately, presently habitat loss due both to the expansion of agriculture and river damming pose a threat to this ...
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Citations
... Hyphessobrycon Durbin, 1908 is a Neotropical genus of small-sized characids currently comprising more than 160 valid species (Fricke et al. 2023), which makes it one of the most diverse genera within the family Characidae and the order Characiformes. This genus is widespread throughout the Neotropical region, occurring from southern Mexico to northern Argentina, with the Amazon basin harboring about half of its species diversity (Ohara and Lima 2015). ...
Hyphessobrycon langeanii was originally described as endemic to the upper Araguaia river basin, Brazil. However, our analysis of several Hyphessobrycon specimens collected in the Correntes river basin and another tributary of the Itiquira River in Mato Grosso state (both belonging to the Paraguay river basin) reveals the first verified record of H. langeanii from this basin and from the states of Mato Grosso do Sul and Mato Grosso. The objective of this study is to provide a novel record of H. langeanii from the basin of the Paraguay River and from the state of Mato Grosso do Sul. We compare the newly discovered populations with the populations in the Araguaia river basin, and we also provide a brief discussion on the biogeography of this species.
... Broad ichthyological collecting efforts in the rio Tapajós basin (e.g., Camargo et al., 2005;Silva-Oliveira et al., 2016;Ohara et al., 2017) failed to yield samples of K. ytuanama from any localities other than the upper rio Mutum (Ohara & Loeb, 2016). Other species recently described from river systems draining from Chapada dos Parecis also have a similar pattern of restricted geographic range (i.e., Ohara & Lima, 2015;Peixoto & Ohara, 2019;Zanata & Ohara, 2020;Dutra et al., 2021). Thus, we suggest K. ytuanama to be an additional species potentially endemic from river basins draining the Chapada dos Parecis. ...
Knodus ytuanama, new species, is described from the upper rio Juruena, rio Tapajós drainage, Amazon basin, Mato Grosso, Brazil. The new species differs from its congeners by presenting the interradial membranes of the caudal fin thickened, forming folds, and also differs from most congeners by the presence of a dark, wide midlateral stripe extending from the posterior margin of opercle to the middle caudal-fin rays, the absence of a humeral blotch in adults, and by having four rows of scales between the lateral line and the pelvic-fin origin, among another features. We also provide a discussion on the presence of membranous flaps on the fins as an adaptation for living in fast-water environments in Knodus ytuanama n. sp. as well as in a congener, K. tiquiensis.
... Its headwaters are located at the southeastern border of Rondônia at Chapada dos Parecis, a watershed between three river basins (Madeira, Paraguay and Tapajós). This region is also the type locality of many recently described fish species (Fisch-Müller et al., 2005;Wingert & Malabarba, 2011;Ohara & Lima, 2015;Ohara & Marinho, 2016;Bockmann & Reis, 2021;Marinho et al., 2021). The majority of these species seem to have very restricted distribution, since they were not recorded during previous surveys in the Rio Machado basin (e.g., Perin et al., 2007;Casatti et al., 2013;Costa et al., 2017), in other rivers of the Rio Madeira basin (e.g., Rapp Py-Daniel et al., 2007;Araújo et al., 2009;Pedroza et al., 2012;Queiroz et al., 2013a, b;Vieira et al., 2016;Anjos et al., 2019;Oliveira et al., 2020), or in neighboring drainages (Ohara & Loeb, 2016;Ohara et al., 2017). ...
... The majority of these species seem to have very restricted distribution, since they were not recorded during previous surveys in the Rio Machado basin (e.g., Perin et al., 2007;Casatti et al., 2013;Costa et al., 2017), in other rivers of the Rio Madeira basin (e.g., Rapp Py-Daniel et al., 2007;Araújo et al., 2009;Pedroza et al., 2012;Queiroz et al., 2013a, b;Vieira et al., 2016;Anjos et al., 2019;Oliveira et al., 2020), or in neighboring drainages (Ohara & Loeb, 2016;Ohara et al., 2017). A similar pattern with restricted species has also been mentioned to the Chapada dos Parecis, regarding small fishes from the upper Rio Machado/Guaporé (Rio Madeira basin), upper Rio Juruena (Rio Tapajós basin), and upper Rio Paraguai (Ohara & Lima, 2015). ...
... Fishes were anesthetized with clove oil (Eugenol, 10 mg per liter, as indicated by the AVMA, 2013), fixed in 10% formalin, and posteriorly transferred to 70% ethanol. Fishes were then counted and identified according Queiroz et al. (2013a), Ohara et al. (2017) and original description of species (e.g., Wingert & Malabarba, 2011;Fisch-Müller et al., 2005;Ohara & Lima, 2015;Ohara & Marinho, 2016). Higher-rank taxonomic classification follows Fricke et al. (2022). ...
This study represents an inventory of fish collected in a first order tributary of the Igarapé Piracolina at Chapada dos Parecis, upper Rio Machado drainage, Rio Madeira basin, Vilhena, Rondônia, Brazil. The sampled stream is located in moderate altitudes (570-590) m above sea level and it is the type locality of five recently described species. Through fieldwork carried out in four fieldtrips between 2014 and 2015, 966 specimens were captured belonging to 18 species, distributed in nine families and four orders. Most of these species have a restricted distribution in the upper Rio Machado. Characidae was the most representative family both in number of species and specimens. One species is recognized as new and endemic to the region, and belong to the genus Pyrrhulina (Lebiasinidae), while five other species (Ancistrus verecundus, Bryconops piracolina, Hyphessobrycon lucenorum, Moenkhausia cambacica, and M. parecis) are also possibly endemic to the upper Rio Machado basin. In this scenario, our results provide relevant data for the establishment of guiding policies, management decisions and bases for conservation actions in moderate altitude areas of the Amazon basin.
... As is the case for the whole family Heptapteridae (Bockmann, 1998;Bockmann & Guazzelli, 2003), the alpha diversity of Cetopsorhamdia is considerably underestimated, containing at least eight species pending description, some of which have already been listed in catalogs and faunistic works (cf. Ohara & Lima, 2015;Ohara & Loeb, 2016;Ohara & Marinho, 2016;. During the Brazilian leg of the Transcontinental Catfish Expedition, funded by the All Catfish Species Inventory Project, carried out mainly across the upper Paraguay, upper Tapajós, upper and middle Madeira and Purus, at least 38 new catfishes have been unveiled (Reis, 2005). ...
... The Igarapé Piracolina, where the holotype (MCP 36064) and several paratypes (ANSP 188921, MCP 36063, MNRJ 35877) of C. clathrata were caught, is a small river with sandy bottom, interspersed with sections of gravel and pebbles, and rich aquatic vegetation, with clear waters and moderate to strong current (Fig. 11). Similar habitat and environmental conditions have been reported by Ohara & Lima (2015) and Ohara & Marinho (2016) for C. clathrata (identified as Cetopsorhamdia sp. 3; UFRO-I 22918) in a Figure 10. ...
... Ohara, Tencatt & Britto, 2016) and Pyrrhulina sp. That tributary was categorized as a "terra-firme igarapé" (= highland creek), with its sampled stretch located at 585 m above sea level, described as being small, 1.5-2.5 m wide and 0.3-1.5 m deep, with clear and swift waters, and bottom composed of sand and dead leaves, with little preserved riparian vegetation and surrounded by large plantation fields (mostly soy and corn) (Ohara & Lima, 2015: fig. 4; Ohara & Marinho, 2016: fig. ...
Two new species of heptapterid catfish genus Cetopsorhamdia are described from close localities in western Brazil, at Chapada dos Parecis, an area with extremely high level of endemism. One species is from the upper Rio Madeira system, Rondônia State, and the other from the upper Rio Tapajós system, Mato Grosso State. The two species are diagnosed, among several other features, by their markedly distinctive color patterns, with the former having well-defined quadrangular marks in trunk flanks while the latter bearing irregular, vertical bars along the trunk. The monophyly of Cetopsorhamdia is discussed, with two putative synapomorphies being proposed to support the genus. Potentially informative morphological characters to resolve the internal relationships of the genus are presented and discussed. Despite the striking external differences between the two species herein described, they are found to likely form a clade.
... The Chapada dos Parecis is an important watershed between three river systems (Madeira, Paraguai, and Tapaj os) with moderate altitude at the western border of the Brazilian Shield (Ohara & Lima, 2015a). Intensive and broad ichthyological collecting efforts in the Rio Madeira (Queiroz et al., 2013) and Rio Tapaj os basins (Ohara et al., 2017) failed to yield samples of B. degy from other localities other than the headwaters of Rio Machado and Juruena, indicating a very restricted distribution of the new species. ...
A new species of the bluntnose knifefish genus Brachyhypopomus Mago-Leccia is described from headwaters of upper Rio Juruena, and upper Rio Machado, Amazon basin, Brazil. The new species differs from all congeners by the absence of a small independent ossification of the Weberian complex located posterodorsally to the supraoccipital. It can be additionally distinguished from its congeners by a set of characters in combination that includes: absence of accessory electric organ over the opercular region, absence of a prominent pale uninterrupted middorsal stripe on body, presence of scales on the entire middorsal region of body, dorsal rami of the recurrent branch of anterior lateral-line nerve not externally visible, presence of a dark suborbital stripe, and possession of 8–10 scale rows above the lateral line. The phylogenetic position of the new species is inferred by its inclusion in a total-evidence matrix with data from morphology, mitochondrial genes, and nuclear genes of all species. The new species is apparently restricted to upland tributaries of the Chapada dos Parecis, more than 500 m high. Comments on the occurrence of fish species in multiple independent basins at Chapada dos Parecis are also provided.
http://www.zoobank.org/urn:lsid:zoobank.org:pub:620C58EB-4DA7-4322-9E2D-ACF4152DB0C7
... During a broad survey of the biodiversity (flora and vertebrate fauna) of the northern portion of Pará State conducted by Museu Paraense Emílio Goeldi personnel between 2008-2009 as part of the ''Projeto Diagnóstico da Biodiversidade das Unidades de Conservação Estaduais do Mosaico Calha Norte, Estado do Pará'' (see Á vila-Pires et al., 2010 for details), several remote, biologically poorly known sites situated in tributaries of the Amazon basin draining the Guiana Shield were sampled, which resulted in the discovery of some undescribed fish species (e.g., Wosiacki et al., 2011;Birindelli et al., 2013;Wosiacki and Miranda, 2013). In the present contribution, an additional new species discovered during this survey is described, a species of Hyphessobrycon with a color pattern similar to congeners belonging to the Hyphessobrycon agulha species-group (Géry, 1977;Costa and Géry, 1994;Ohara and Lima, 2015). The aim of the present contribution is to describe this new taxon and discuss its putative relationships. ...
... Among the groups proposed within the genus, the Hyphessobrycon agulha species-group (Géry, 1977;Costa and Géry, 1994) is more similar to Hyphessobrycon zoe in regard to color pattern. The Hyphessobrycon agulha species-group, proposed originally by Géry (1977) and later expanded by subsequent authors (Costa and Géry, 1994;Ohara and Lima, 2015;Zarske, 2015Zarske, , 2016García-Alzate et al., 2017;Moreira and Lima, 2017), is currently composed by H. agulha, H. clavatus, H. eschwartzae, H. herbertaxelrodi, H. klausanni, H. loretoensis, H. lucenorum, H. margitae, H. metae, H. mutabilis, and H. peruvianus. Species belonging to the group typically possess a humeral blotch (inconspicuous in some species) followed by a broad, blurred midlateral stripe. ...
... Additionally, Hyphessobrycon wadai, although not associated with this group in its original description, can also be included as it has the diffuse broad lateral stripe shared by its component species (Marinho et al., 2016a). There is no evidence, however, that the Hyphessobrycon agulha species-group is monophyletic, although it seems likely that some of its component species are closely related to each other (e.g., H. herbertaxelrodi and H. lucenorum; Ohara and Lima, 2015). Hyphessobrycon zoe possesses a comparatively poorly developed diffuse lateral stripe, only conspicuous after the midbody. ...
A new species of Hyphessobrycon from a tributary of the Rio Paru do Oeste (Rio Trombetas basin), at the lower Amazon basin draining the Guiana Shield region in Pará State, Brazil, is described. The new species presents a unique combination of an irregularly-shaped humeral blotch, a broad diffuse midlateral stripe, and a roughly triangular caudal peduncle blotch. The new species is herein included in the Hyphessobrycon agulha species-group, and comparisons with species belonging to this group and to a similar-looking non-congener, Hemigrammus bellottii, are presented. © 2020 by the American Society of Ichthyologists and Herpetologists.
... Despite that, the traditional definition of the genus of Eigenmann (1917) is still used in taxonomic studies, mainly for practical reasons. Nevertheless, some species groups have been proposed within this genus, based primarily on similarities of colour pattern, shape of body and fins, and secondary sexual characters (Ingenito et al., 2013;Lima et al., 2014;Moreira & Lima, 2017;Ohara & Lima, 2015;Pastana & Ohara, 2016;Weitzman & Palmer, 1997). ...
Hyphessobrycon chiribiquete n. sp. is described from the Río Caquetá drainage in Colombia and the Río Ucayali drainage in Peru, western Amazon. The new species is diagnosed from its congeners by having the following combination of characters: a conspicuous narrow midlateral stripe, starting on the sides of the body behind the opercle near the lateral line; lateral stripe overlapped anteriorly with a vertically elongated humeral blotch; inner premaxillary teeth pentacuspid; margin of anal fin falcate in mature males.
... Hyphessobrycon rheophilus possesses a very faint dark broad longitudinal band along the body, extending from the opercle to the caudal peduncle terminus. This condition is somewhat similar to the one present in species belonging to the Hyphessobrycon agulha group (sensu Ohara & Lima, 2015) Hyphessobrycon species inhabit many different environments, from small to large streams/rivers, lakes and floodplains and, as most small characids, are found typically in shallow depths or close to the shore (Lima & Moreira, 2003;Lima et al., 2013;Lima & Flausino Jr., 2016;Ohara, Lima & Barros, 2017). However, Hyphessobrycon rheophilus was only collected in rapids, a very unusual habitat for species of Hyphessobrycon, which is typically dominated in the Amazon and Orinoco basins by tetras belonging to the Stevardiinae. ...
A new species from rapids of Rio Aripuanã, Rio Madeira basin, in Brazil, and from the same type of habitat in the upper Rio Negro and upper Rio Orinoco basins in Brazil, Colombia, and Venezuela is described and assigned to the genus Hyphessobrycon. The new species presents an interrupted lateral line plus a single perforated scale on caudal peduncle and a small dark blotch on dorsal procurrent caudal-fin rays, features not found in the other species of Hyphessobrycon. Comments on the phylogenetic position of the new species, its rheophilic habits, and the biogeographic implications of its distribution are presented.
... these genera (Eigenmann, 1908(Eigenmann, , 1921 is still used in taxonomic studies, mainly for practical reasons. Nevertheless, new taxa have been described in genera different from those in which they would fit according to the traditional definition (Benine et al., 2009;Lima & Gerhard, 2001;Lima & Toledo-Piza, 2001;Lima et al., 2007;Ohara & Lima, 2015a), and groups of species gathering, sometimes, species assigned to different genera have been proposed based primarily on similarities of colour pattern, shape of body and fins, and secondary sexual characters (Ohara & Lima, 2015b). Some of these groups as merely artificial operational assemblages to aid species identification (Bertaco & Lucena, 2006;Bertaco & Malabarba, 2001;Géry, 1977;Moreira-Filho & Bertollo, 1991), whereas others represent potential monophyletic groups, with explicit putative synapomorphies (Ingenito et al., 2013;Lima & Sousa, 2009;Lima & Toledo-Piza, 2001;Lima et al., 2014;Ohara & Lima, 2015a, b;Pastana & Ohara, 2016;Weitzman & Palmer, 1997). ...
A new species of Hyphessobrycon is described from a marshland area in the headwaters of Rio Jequitinhonha basin, Minas Gerais, Brazil. The new species differs from congeners by presenting a single well‐delimited conspicuous humeral blotch, rounded to vertically oval, restricted to the area dorsal to the lateral‐line row of scales, without a narrower downward extension, greatest body depth anterior to dorsal‐fin origin, bony processes in anal and pectoral‐fin rays of males and four teeth in the inner row of the premaxillary bone. The new species presents a set of morphological features shared by some species currently assigned to Hasemania, Myxiops and to the Astyanax scabripinnis complex. Some of these features are discussed.
... Roberts' (1972) hypothesis has been repeatedly corroborated and colorful characin species are indeed far more numerous in clear-or blackwater rivers and streams (cf. Bertaco, Carvalho, 2005a, 2005bCarvalho, Bertaco, 2006;Lima, Birindelli, 2006;Lima et al., 2007;Bertaco, Malabarba, 2007;Sousa et al., 2010;Bertaco et al., 2011;Ingenito et al., 2013;Mattox et al., 2013;Netto-Ferreira et al., 2013;Marinho et al., 2014;Pastana, Dagosta, 2014;Dagosta et al., 2015;Ohara, Lima, 2015). ...
The history of knowledge about Amazonian biogeography is as rich as its fish community, and a fascinating theme of study in itself. Several current paradigms and controversies about Amazonian fish biogeography are rooted in principles dating from the second half of the 18th to the first half of the 19th centuries. The present work establishes a relationship between current biogeographical ideas and their old predecessors, on the basis of a chronologically-oriented historical continuity analysis. The advent of evolutionary theory has not contributed significantly to a transformation of the knowledge on the biogeography of Amazonian fishes. On the other hand, the two main schools of biogeographical thought (dispersalist and vicariant) had major implications on how Amazonian fish distribution is interpreted. The process was gradual and many hypotheses have combined elements from each of the two schools. Chronologically, practically the entire tradition of Amazonian biogeography takes place within the evolutionary paradigm, although its founder Louis Agassiz was himself an anti-evolutionist. The birth of Amazonian biogeography is Agassiz´s travel in Amazon. That document makes it clear that the author did not consider dispersal as a valid explanation for the biogeographical patterns he found. Later, Carl Eigenmann helps to spread the dispersalist tradition as a model for biogeographical explanations in fish distributions, a phase which lasted until the late 20th century. A major shift occurs with the contributions of Marylin Weitzman, Stanley Weitzman and Richard Vari, who associated the temporal framework of phylogenetic hypotheses with distribution patterns, underscoring the predictive power of vicariant biogeography. The present-day paradigm begins with the work of John Lundberg and attempts to incorporate geomorphological and phylogenetic information into integrative biogeographical hypotheses. Some emblematic problems have delayed proposition of general hypotheses on the phylogenetic biogeography of South American fishes, such as the poor state of knowledge of their species-level systematics; an incomplete distributional record for most species and sparse or non-existent data on the phylogenetic history of most supraspecific taxa. Such drawbacks are now being corrected at a fast pace. Recent advances on geographical distribution and an increasing number of phylogenetic hypotheses will allow unprecedented large-scale biogeographic analyses, including those based on event models and Bayesian inference. Thus, the biogeography of South American fishes, especially Amazonian ones, should soon experiment a new age of progress. The success of that new phase will depend on its ability to recognize and segregate multiple overlapping temporal layers of hydrological changes, and to develop analytical tools that can deal with temporal mixing.
