Synallaxis amazonica HELLMAYR 1907
Creators: name: Stopiglia, Renata
name: Barbosa, Waleska
name: Ferreira, Mateus
name: Raposo, Marcos A
name: Dubois, Alain
name: Harvey, Michael G
name: Kirwan, Guy M
name: Forcato, Giovanna
name: Bockmann, Flavio A
name: Ribas, Camila C
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Furnariidae
Synallaxis
Synallaxis amazonica

description: SYNALLAXIS AMAZONICA HELLMAYR, 1907
Synallaxis rutilans amazonica Hellmayr, 1907: 14
(holotype, AMNH 523587, an adult female from Itaituba, left bank of the Tapajós River, Pará, Brazil, examined by us; see Remarks 7 for comments).
Synallaxis rutilans tertia Hellmayr, 1907:15 (holotype, NMW 20198, an adult female from Engenho do Gama, Guaporé River, Mato Grosso, Brazil).
Diagnosis: Synallaxis amazonica differs from S. omissa in having the forehead, supercilium and face amber (36). However, S. amazonica lacks any morphological diagnosis compared to S. rutilans, S. caquetensis and S. dissors, as both the rufous pattern of S. caquetensis and olive pattern of S. dissors occur in S. amazonica, including individuals with intermediate plumage.
Description: Throat sepia (119); breast amber (36), varying individually between robin rufous (340) and chestnut (32); abdomen and flanks olive brown (28), varying individually between clay colour (26) and raw umber (123), with elements of raw umber (123) as a secondary colour; rectrices sepia (119); back and crown olive brown (28), varying individually to Vandyke brown (121), with elements of raw umber (123) and Vandyke brown (121) as the secondary colour; forehead amber (36) varying individually to chestnut (32); supercilium and face amber (36), varying individually to chestnut (32); wing-coverts chestnut (32), varying individually to amber (36); remiges Vandyke brown (121), varying individually to Vandyke brown (221); bill length 11.7–14.6 mm; bill depth 3.8–5.0 mm; wing length 53.1–63.9 mm; tail length 54.0–72.0 mm, with ten rectrices (see Tables 7, 8).
Distribution: Understorey of terra firme forest in Brazil, S. amazonica occurs from the left bank of the Xingu River, in central Pará, and the right bank of the Amazonas/Solimões River, in Amazonia, southwest to western Mato Grosso, Rondônia, Acre and to eastern Peru and western Bolivia. The distribution of Synallaxis amazonica is represented in Figures 1 and 4 by the turquoise, blue and green colours of the Tapajós, Rondônia and Inambari endemic areas, respectively.
Remarks 7: Vaurie (1980: 117) mentioned that ‘As first reviser, I select amazonica (Hellmayr, 1907: 14) as the name of the rufous populations, rather than tertia (Hellmayr, 1907: 15), which Cory & Hellmayr (1925) noted subsequently is ‘closely similar’ to amazonica ’. Synallaxis r. amazonica Hellmayr, 1907, was described simultaneously with Synallaxis r. tertia Hellmayr, 1907, and from the moment that Vaurie (1980) considered these two names to be subjective synonyms he acted in accordance with Article 24.2.2 of the Code, wherein it is stated that determining the precedence of names is the role of the first reviser. We maintain the understanding of Vaurie (1980) that S. r.tertia is a junior subjective synonym of S.r.amazonica, but we think that S.r.amazonica should not be the name applied to‘rufous’ populations of the S.rutilans group. Populations with diagnostically rufous plumage are named Synallaxis caquetensis Chapman, 1914, considering the type locality and the results of our analysis.Thus, in fact, the act of Vaurie(1980) as first reviser fixed the priority of S.r.amazonica ahead of S.r.tertia, but application of the name S. r.amazonica proposed here is distinct from that used by Vaurie (1980) and is not affected by his judgment as first reviser.
description: Published as part of Stopiglia, Renata, Barbosa, Waleska, Ferreira, Mateus, Raposo, Marcos A, Dubois, Alain, Harvey, Michael G, Kirwan, Guy M, Forcato, Giovanna, Bockmann, Flavio A & Ribas, Camila C, 2022, Taxonomic challenges posed by discordant evolutionary scenarios supported by molecular and morphological data in the Amazonian Synallaxis rutilans group (Aves: Furnariidae), pp. 65-87 in Zoological Journal of the Linnean Society 195 (1) on pages 81-82, DOI: 10.1093/zoolinnean/zlab076, http://zenodo.org/record/6530667