Isleria, a new genus of antwren (Aves: Passeriformes: Thamnophilidae)

Bravo, Gustavo A.; Chesser, R. Terry; Brumfield, Robb T.

doi:10.11646/zootaxa.3195.1.5

Cited by 14 publications

(16 citation statements)

References 27 publications

(24 reference statements)

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“…These studies have corroborated previous suggestions on the polyphyly of several antbird genera (e.g. Hackett & Rosenberg, ; Ridgely & Tudor, ; Bates, Hackett & Goerck, ; Zimmer & Isler, ), and the resurrection or recognition of several new thamnophilid genera in recent years (Bornschein, Reinert & Teixeira, ; Isler et al ., ; Isler & Whitney, ; Belmonte‐Lopes et al ., ; Bravo, Chesser & Brumfield, ; Bravo et al ., ; Isler, Bravo & Brumfield, ). Monophyly of other genera remains to be assessed.…”

Section: Introductionmentioning

confidence: 99%

Reassessment of the systematics of the widespread Neotropical genusCercomacra(Aves: Thamnophilidae)

et al. 2014

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A comprehensive molecular phylogeny of the family Thamnophilidae indicated that the widespread neotropical genus Cercomacra Sclater, 1858 is polyphyletic. Two non‐sister clades in putative Cercomacra were uncovered: (1) the ‘nigricans’ clade (Cercomacra sensu stricto), formed by manu, brasiliana, cinerascens, melanaria, ferdinandi, carbonaria, and nigricans; and (2) the ‘tyrannina’ clade formed by nigrescens, laeta, parkeri, tyrannina, and serva. Sciaphylax was sister to the ‘tyrannina’ clade and this group was sister to a clade formed by Drymophila and Hypocnemis. This whole major clade then was sister to Cercomacra sensu stricto. Further work is needed to resolve the phylogenetic placement of brasiliana and cinerascens within Cercomacra, and the relationships within the ‘tyrannina’ clade. Because the group of species referred to as the ‘tyrannina’ clade does not have an available name, we erect a new genus that recognizes the monophyly and distinct nature of this group. A molecular time scale for the evolution within Cercomacra sensu lato is proposed. © 2014 The Linnean Society of London

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Section: Introductionmentioning

confidence: 99%

Reassessment of the systematics of the widespread Neotropical genusCercomacra(Aves: Thamnophilidae)

et al. 2014

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“…Even for presumably well‐described groups, molecular data have indicated that many recognized taxonomic clades are not monophyletic, and taxonomic reclassifications are needed (Bravo et al . ; Gutiérrez‐Pinto et al . ; d'Horta et al .…”

Section: Introductionmentioning

confidence: 99%

Identifying biases at different spatial and temporal scales of diversification: a case study in the Neotropical parrotlet genus Forpus

et al. 2012

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The temporal origins of the extraordinary biodiversity of the Neotropical region are highly debated. Recent empirical work has found support for alternative models on the tempo of speciation in Neotropical species further fuelling the debate. However, relationships within many Neotropical lineages are poorly understood, and it is unclear how this uncertainty impacts inferences on the evolution of taxa in the region. We examined the robustness of diversification patterns in the avian genus Forpus by testing whether the use of different units of biodiversity (i.e. biological species and statistically inferred species) impacted diversification rates and inferences regarding important biogeographic breaks in the genus. We found that the best-fit model of diversification for the biological species data set was a declining rate of diversification; whereas a model of constant diversification was the best-fit model for statistically inferred species or subspecies. Moreover, the relative importance of different landscape features in delimiting genetic structure across the landscape varied across data sets with differing units of biodiversity. Patterns based on divergence times among biological species indicated old speciation events across major geographic and river barriers. In contrast, data sets more inclusive of the diversity in Forpus illustrate the role of both old divergence across major landscape features and more recent divergences that are possibly attributed to Pleistocene climatic changes. Overall, these results indicate that conflicting models on the temporal origins of Neotropical birds may be attributable to sampling biases.

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“…The Myrmotherula complex (i.e., genus Myrmotherula sensu Zimmer and Isler ) in the Neotropical family Thamnophilidae is a polyphyletic group (Hackett and Rosenberg ; Irestedt et al ; Brumfield et al ; Belmonte‐Lopes et al ; Bravo et al ) that consists of 35 species of sexually dimorphic small insectivorous forest birds that are relatively homogeneous in size and shape. The complex is ideal for the study of evolutionary processes that underlie relationships between ecology and morphology because these birds form a tight ecological assemblage with high levels of intrageneric sympatry and syntopy (Stotz ).…”

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“…Some members of the genera Formicivora , Terenura , and Myrmochanes have been associated to the complex (e.g., Irestedt et al ; Brumfield et al ; Bravo et al ; Ohlson et al ). The fivefold polyphyly in the complex (Hackett and Rosenberg ; Irestedt et al ; Brumfield et al ; Belmonte‐Lopes et al ; Bravo et al ) suggests different lineages within the complex have either converged into similar morphologies or have retained ancestral morphological features.…”

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confidence: 99%

Adaptive processes drive ecomorphological convergent evolution in antwrens (Thamnophilidae)

2014

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Phylogenetic niche conservatism (PNC) and convergence are contrasting evolutionary patterns that describe phenotypic similarity across independent lineages. Assessing whether and how adaptive processes give origin to these patterns represent a fundamental step toward understanding phenotypic evolution. Phylogenetic model-based approaches offer the opportunity not only to distinguish between PNC and convergence, but also to determine the extent that adaptive processes explain phenotypic similarity.The Myrmotherula complex in the Neotropical family Thamnophilidae is a polyphyletic group of sexually dimorphic small insectivorous forest birds that are relatively homogeneous in size and shape. Here, we integrate a comprehensive species-level molecular phylogeny of the Myrmotherula complex with morphometric and ecological data within a comparative framework to test whether phenotypic similarity is described by a pattern of PNC or convergence, and to identify evolutionary mechanisms underlying body size and shape evolution. We show that antwrens in the Myrmotherula complex represent distantly related clades that exhibit adaptive convergent evolution in body size and divergent evolution in body shape. Phenotypic similarity in the group is primarily driven by their tendency to converge toward smaller body sizes. Differences in body size and shape across lineages are associated to ecological and behavioral factors.

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Isleria, a new genus of antwren (Aves: Passeriformes: Thamnophilidae)

Cited by 14 publications

References 27 publications

Reassessment of the systematics of the widespread Neotropical genusCercomacra(Aves: Thamnophilidae)

Reassessment of the systematics of the widespread Neotropical genusCercomacra(Aves: Thamnophilidae)

Identifying biases at different spatial and temporal scales of diversification: a case study in the Neotropical parrotlet genus Forpus

Adaptive processes drive ecomorphological convergent evolution in antwrens (Thamnophilidae)

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