The Venezuelan species of Phenacorhamdia (Siluriformes: Heptapteridae), with the description of two new species and a remarkable new tooth morphology for siluriforms

DoNascimiento, Carlos; Milani, Nadia

doi:10.1635/0097-3157(2008)157[163:tvsops]2.0.co;2

Cited by 10 publications

(3 citation statements)

References 4 publications

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“…The Clade 3 includes three genera, namely: Cetopsorhamdia sister to Pariolius + Phenacorhamdia . Conversely, DoNascimento and Milani (2008) proposed a sister relationship between Phenacorhamdia and Chasmocranus based on distinctive bifid hemal spines of the vertebrae immediately above insertion of the anal‐fin pterygiophores. Our molecular analysis, however, placed Phenacorhamdia sister to Pariolius, suggesting that this condition is homoplastic.…”

Section: Resultsmentioning

confidence: 99%

Evolutionary history of Heptapteridae catfishes using ultraconserved elements (Teleostei, Siluriformes)

et al. 2021

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Heptapteridae is composed of 228 valid species allocated in 24 genera, making it the most diverse family within superfamily Pimelodoidea, a clade endemic to the Neotropical freshwaters. Heptapterids are widely distributed from southern Mexico to the Pampas of Argentina and occupy a variety of habitats generally in small‐ to medium‐sized rivers. To evaluate the phylogenetic relationships of Heptapteridae, we used a matrix with 1,319 ultraconserved elements (UCEs) from the genome from 56 specimens spanning 42 species and 24 genera of Heptapteridae and 19 related siluriform taxa. Maximum likelihood, Bayesian and coalescent‐based analyses strongly supported the monophyly of Heptapteridae and confirmed previous hypotheses of a sister relationship between Heptapteridae and Conorhynchos conirostris. We provide the evidence to recognize two subfamilies: (1) Rhamdiinae (Goeldiella, Rhamdella, Rhamdia, Brachyrhamdia, Pimelodella) and (2) Heptapterinae; with two tribes: Brachyglaniini new tribe (Gladioglanis, Myoglanis, Brachyglanis and Leptorhamdia) and Heptapterini (Mastiglanis, Chasmocranus, Cetopsorhamdia, Pariolius, Phenacorhamdia, Nemuroglanis, Imparfinis, Taunayia, Rhamdioglanis, Acentronichthys, Rhamdiopsis and Heptapterus). Inside Heptapterini, we recognize five subclades and provide putative morphological synapomorphies. This paper represents the first molecular hypothesis of intergeneric and interspecific relationships helping to better delineate heptapterid taxa.

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Section: Resultsmentioning

confidence: 99%

Evolutionary history of Heptapteridae catfishes using ultraconserved elements (Teleostei, Siluriformes)

et al. 2021

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“…A long ventral caudal-fin lobe also occurs homoplastically in the genus Phenacorhamdia (cf. Britski, 1993;Bockmann, 1998;DoNascimiento & Milani, 2008).…”

Section: Cetopsorhamdia's Internal Relationshipsmentioning

confidence: 99%

Two new, remarkably colored species of the Neotropical catfish genus Cetopsorhamdia Eigenmann & Fisher, 1916 (Siluriformes, Heptapteridae) from Chapada dos Parecis, western Brazil, with an assessment of the morphological characters bearing on their phylogenetic relationships

Bockmann

Reis

2021

Pap. Avulsos Zool.

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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.

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“…multiradiatus Ihering, 1907, 'H.' stewarti Haseman, 1911, and H. tapanahoniensis Mees, 1967 Guazzelli 2003, altered by Bockmann andde Pinna 2004;DoNascimiento and Milani 2008). All of those diverge from H. mustelinus by one or more easily observable characters, and either can be assigned to other valid genera or regarded simply as incertae sedis within Heptapterini.…”

Section: Introductionmentioning

confidence: 99%

Redefinition of Heptapterus (Heptapteridae) and description of Heptapterus carmelitanorum, a new species from the upper Paraná River basin in Brazil

Deprá¹,

Aguilera²,

Faustino‐Fuster³

et al. 2022

ZSE

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A new diagnosis and a new classification of Heptapterus are provided and a new species, H. carmelitanorum, is described. Heptapterus is diagnosed by the following character combination: adipose fin confluent with the caudal fin; non-bifurcate caudal fin; anal-fin insertion posterior to vertical through adipose-fin insertion; 10–23 anal-fin rays; anal fin not confluent with caudal fin; and extremely elongate body, with a head length of 16.1–24.9%SL. Species included in Heptapterus are H. borodini, H. carmelitanorum, H. carnatus, H. exilis, H. hollandi, H. mandimbusu, H. mbya, H. mustelinus, H. ornaticeps, and H. qenqo. Some of the character states diagnosing H. carmelitanorum among its congeners are the anal-fin insertion less than one eye diameter posterior to a vertical through the adipose-fin insertion (vs. more than one eye diameter in all congeners); the isognathous mouth (vs. slightly to moderately retrognathous, except H. borodini); and the keel formed by ventral procurrent caudal-fin rays shallow, far from reaching anal-fin base (vs. keel formed by ventral procurrent caudal-fin rays deep, continuing almost to the anal-fin base, except in H. borodini and H. hollandi).

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The Venezuelan species of Phenacorhamdia (Siluriformes: Heptapteridae), with the description of two new species and a remarkable new tooth morphology for siluriforms

Cited by 10 publications

References 4 publications

Evolutionary history of Heptapteridae catfishes using ultraconserved elements (Teleostei, Siluriformes)

Evolutionary history of Heptapteridae catfishes using ultraconserved elements (Teleostei, Siluriformes)

Two new, remarkably colored species of the Neotropical catfish genus Cetopsorhamdia Eigenmann & Fisher, 1916 (Siluriformes, Heptapteridae) from Chapada dos Parecis, western Brazil, with an assessment of the morphological characters bearing on their phylogenetic relationships

Redefinition of Heptapterus (Heptapteridae) and description of Heptapterus carmelitanorum, a new species from the upper Paraná River basin in Brazil

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