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Chachalacas

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Old Wednesday 29th June 2016, 17:32   #26
idioptilon
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pdf here: https://www.researchgate.net/publica...ment_sequences
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Old Wednesday 2nd November 2016, 17:06   #27
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Proposal (731) to SACC

Elevate Ortalis motmot ruficeps to species rank
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Old Friday 18th August 2017, 08:37   #28
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Pinto's Scaled Chachalaca Ortalis remota has been released of the synonymy of Ortalis squamata

Ortalis remota: a forgotten and critically endangered species of chachalaca (Galliformes: Cracidae) from Eastern Brazil
LUÍS FÁBIO SILVEIRA, BARBARA MIZUMO TOMOTANI, CÉSAR CESTARI, FERNANDO C. STRAUBE, VITOR DE Q. PIACENTINI

Abstract

The habits and general behaviour of the chachalacas (Ortalis spp.) in the Neotropics are well known. However, the validity and even the diagnoses of some taxa are poorly studied, and this may jeopardize the conservation of some populations. Within Ortalis guttata two subspecies are currently accepted, the nominate O. g. guttata (Spix) and O. g. subaffinis Todd. A third taxa, O. g. remota Pinto, 1960, was described based on a single specimen from SE Mato Grosso do Sul state, Brazil. Despite appreciable differences between O. g. remota and other members of Ortalis, this taxon was considered as a synonym of O. squamata, a species restricted to the lowlands of Atlantic Forest, east of Serra do Mar. Here we performed coloration and geographical distribution analysis of O. g. remota with additional examination of the holotype and a thorough comparison of skins and photos with other members of Ortalis (O. squamata, O. araucuan, and O. guttata) intending to disentangle the above taxonomic puzzle. Our results showed that a newly recognized population of O. g. remota differs consistently from all other Ortalis taxa currently treated as distinct species in plumage characters and geographic distribution. Therefore, we defend that it should be considered a valid species, Ortalis remota Pinto, 1960. Ortalis remota has a very restricted range on the upper Paraná River and it is threatened by deforestation and construction of dams.



Keywords

Aves, São Paulo state, taxonomy, threatened species, deforestation

http://www.mapress.com/j/zt/article/...otaxa.4306.4.4

I am curious on the SACC proposal

Last edited by Melanie : Friday 18th August 2017 at 08:56.
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Old Friday 18th August 2017, 09:35   #29
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Melanie or others, is there a SACC proposal? I see SACC as not having updated anything since early May?
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Old Friday 18th August 2017, 09:51   #30
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Quote:
Originally Posted by pbjosh View Post
Melanie or others, is there a SACC proposal? I see SACC as not having updated anything since early May?
The paper is from today. Maybe there will be a proposal because of that paper.
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Old Thursday 31st August 2017, 16:19   #31
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Quote:
Originally Posted by Melanie View Post
Ortalis remota: a forgotten and critically endangered species of chachalaca (Galliformes: Cracidae) from Eastern Brazil
LUÍS FÁBIO SILVEIRA, BARBARA MIZUMO TOMOTANI, CÉSAR CESTARI, FERNANDO C. STRAUBE, VITOR DE Q. PIACENTINI
Full text available here: https://www.researchgate.net/publica...Eastern_Brazil
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Old Wednesday 24th January 2018, 07:44   #32
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Penelope superciliaris

O. D. E. Vargas. Taxonomy and geographic distribution of Penelope superciliaris complex Temminck, 1815 (Aves: Galliformes: Cracidae). Dissertação de Mestrado, São Paulo, 2017.

Abstract:

Penelope superciliaris Temminck, 1815, known as Rusty-margined Guan, is a forest guan with the widest distribution, occurring in Brazil, Paraguay, Argentina and Bolivia, being also one of the seven species of the genus Penelope distributed in Brazil. Its subspecies have been described based on the width and shade of edges of feathers, the development of the superciliary stripe, naked parts pigmentation, general plumage coloration and size. The taxonomy of this taxon is complex and even today many authors never reached a consensus on the validity of the subordinate taxa; most of them recognize only three subspecies: P. s. superciliaris, P. s. jacupemba and P. s. major; other populations proposed as new races are currently synonymized with the previous three. For this complex, no review was conducted in the last 70 years that is why, with recent collection of new material, I performed a taxonomic revision based on external morphological characters. The aim on this work is to verify how many taxa exist at the species level in the Penelope superciliaris complex, and delimit their respective geographic distributions. To achieve these goals, we performed qualitative analyzes of external morphological characters as plumage coloration, naked parts pigmentation, and were tested inter- and intra-populational variations according to these characters. For statistical analyzes we performed univariate and multivariate tests to evaluate the sexual dimorphism and geographical variation. From eighteen geographic groups formed, the qualitative analyzes reveals that there is no sexual dimorphism, and most of them have a high degree of individual variation. Statistical analyzes did not discriminate the sexes and populations based on the eight body measurements used, but the taxa were discriminated by plumage coloration and naked parts pigmentation. According to the Phylogenetic Species Concept (PSC), we consider that the Penelope superciliaris complex must be divided in four species: Penelope pseudonyma Neumann, 1933, a blue-faced guans population restricted to the Madeira-Tapajós interfluvium in the Amazon forest; Penelope ochromitra Neumann, 1933, from the Caatinga and Cerrado that borders with this biome; Penelope alagoensis Nardelli, 1993, from the Pernambuco Center of Endemism; and Penelope superciliaris Temminck, 1815, which occurs in the rest of the distribution of the complex.
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Old Wednesday 7th February 2018, 07:32   #33
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Proposal (731) to SACC

Elevate Ortalis motmot ruficeps to species rank
DID NOT PASS
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Old Wednesday 4th April 2018, 12:07   #34
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Morphological evidence for the taxonomic status of the Bridge’s Guan, Penelope bridgesi, with comments on the validity of P. obscura bronzina (Aves: Cracidae).

Penelope obscura Temminck, 1815 is a forest guan found in Brazil, Paraguay, Uruguay, Argentina and Bolivia. Three subspecies are currently recognized: Penelope o. obscura Temminck, 1815, P. o. bridgesi Gray, 1860, and P. o. bronzina Hellmayr, 1914. The limits between Penelope taxa are poorly understood since few studies have evaluated their differences in plumage, distribution and taxonomy. Based on 104 specimens deposited in ornithological collections we studied the variations in the plumage of P. obscura, including all characters that have been used to describe the included subspecies. Our results show that the plumage of these birds is extremely variable in southern and southeastern Brazil. Without any morphological and morphometric characters to support P. o. bronzina as a valid taxon, we synonymized it with P. obscura. Conversely, P. o. bridgesi, which occurs in the Yungas and the Chaco, is a distinct taxon and should be treated as a separate species from P. obscura.
https://zoologia.pensoft.net/article/12993/
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Old Wednesday 1st July 2020, 18:04   #35
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Ortalis motmot ruficeps

Tomotani, B., Silveira, L. F., & Pacheco, J. F. (2020). Morphology and vocalization support specific status of the Chestnut-headed Chachalaca, Ortalis motmot ruficeps (Wagler, 1830) (Aves; Galliformes; Cracidae). Papéis Avulsos De Zoologia, 60, e20206012. https://doi.org/10.11606/1807-0205/2020.60.12

Abstract:

The Little Chachalaca (Ortalis motmot) is a widely distributed species in the Amazon basin, typically found in riverine habitats. There are two disjunct populations: the northern O. m. motmot and the southern O. m. ruficeps (known as Chestnut-headed Chachalaca). Here we performed a vocal, morphological and plumage comparison between these two taxa. Birds present differences in tail coloration but are otherwise undiagnosable in terms of plumage. Ortalis m. ruficeps is, however, markedly smaller and lighter than O. m. motmot, with no overlap in size or weight. We also found vocal differences between O. m. motmot and O. m. ruficeps, no overlap in geographic distributions and no signs of hybridization across its range. Based on the available data, Ortalis m. ruficeps thus must be considered a valid species, endemic to Brazil.


With thanks to Tom Schulenberg for bringing this paper to our attention.
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Old Friday 31st July 2020, 18:02   #36
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Opinion 2456 (Case 3669) – Family-group names based on Ortalis Merrem, 1786 (Aves, Cracidae): usage conserved by suppression of the family-group names based on Ortalis Fallén, 1810 (Insecta, Diptera)

Abstract


Under the plenary power, the International Commission on Zoological Nomenclature has conserved the family-group name Ortalidini Donegan, 2012 (Aves, Cracidae) with this spelling and authorship by suppressing all family-group names based on Ortalis Fallén, 1810 (Insecta, Diptera). As a result, Ortalidaini Donegan, 2012 is an incorrect original spelling, and Ortalisini David, 2014 is an unjustified emendation of Ortalidini Donegan, 2012.


Keywords

Nomenclature; taxonomy; ORTALIDAINI; ORTALIDINI; ORTALINI; ORTALISINI; chachalacas; ORTALISCIDAE; CEROXYDIDAE; family-group names; stem formation; homonymy; correct original spelling; English-French discrepancy.

https://www.biotaxa.org/bzn/article/view/63401
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Old Monday 10th August 2020, 14:51   #37
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Proposal (875) to SACC

Elevate Penelope bridgesi to species status and endorse an English name
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