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Trochilidae

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Old Tuesday 9th June 2020, 06:46   #226
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Proposal (835) to SACC

Change the English name of Saucerottia saucerottei
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Old Monday 15th June 2020, 16:44   #227
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IOC Updates Diary June 15

Revise the sequence and genera of Trochilidae.
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Old Monday 29th June 2020, 16:01   #228
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Campylopterus curvipennis

Nataly Cruz-Yepez, Clementina González, Juan Francisco Ornelas. (2020). Vocal recognition suggests premating isolation between lineages of a lekking hummingbird, Behavioral Ecology.
https://doi.org/10.1093/beheco/araa050

Abstract:
Species with genetically differentiated allopatric populations commonly differ in phenotypic traits due to drift and/or selection, which can be important drivers of reproductive isolation. Wedge-tailed sabrewing (Campylopterus curvipennis) is a species complex composed of three genetically and acoustically differentiated allopatric lineages that correspond to currently recognized subspecies in Mexico: C. c. curvipennis (Sierra Madre Oriental), C. c. pampa (Yucatán Peninsula), and C. c. excellens (Los Tuxtlas). Although excellens is taxonomically recognized as a distinct species, there is genetic evidence that lineages excellens and curvipennis have diverged from each other later than pampa. In this study, we experimentally tested C. c. curvipennis song recognition as a major factor in premating reproductive isolation for lineage recognition. To this end, we conducted a song playback experiment to test whether territorial males of one C. c. curvipennis lek discriminate among potential competitors based on male songs from the three lineages. Males of curvipennis responded more aggressively to songs of their own lineage and excellens, than to songs of the most divergent lineage pampa, as evidenced by significant differences in a variety of intensity and latency response variables. This indicate that the pampa male song does not represent a competitive threat as curvipennis and excellens songs, in which divergence and song recognition represent premating reproductive isolation between these isolated lineages. However, the acoustic limits between curvipennis and excellens might be attenuated by gene flow in case of secondary contact between them, despite the strong and relatively rapid divergence of their sexually selected song traits.
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Old Monday 27th July 2020, 18:52   #229
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Eugenes fulgens

Luz E Zamudio-Beltrán, Juan Francisco Ornelas, Andreia Malpica, Blanca E Hernández-Baños, Genetic and morphological differentiation among populations of the Rivoli’s Hummingbird (Eugenes fulgens) species complex (Aves: Trochilidae), The Auk, , ukaa032, https://doi.org/10.1093/auk/ukaa032

Abstract:

Genetic variation and phylogeographic studies have been crucial for understanding mechanisms of speciation. We analyzed genetic variation and phylogeography to reconstruct the demographic history of the Rivoli’s Hummingbird (Eugenes fulgens) species complex and also evaluated their morphological differentiation. This widely distributed species inhabits the highlands of Mexico and northern Central America, with 2 subspecies separated by the Isthmus of Tehuantepec (west: E. f. fulgens, east: E. f. viridiceps). We surveyed genetic variation in 2 mitochondrial DNA markers (mtDNA, with 129 individuals) and nuclear DNA (6 microsatellites, with 85 individuals). We also inferred the demographic history, estimated divergence times, and analyzed morphological variation using 470 vouchered specimens. We modeled the current potential distribution of the species using ecological niche modeling and projected it into the past to model the effects of the Pleistocene climatic cycles. Haplotype networks, pairwise FST comparisons, AMOVA, and morphological analysis revealed differences between geographically isolated populations separated by the Isthmus of Tehuantepec (IT; corresponding to the 2 recognized subspecies: fulgens and viridiceps), and by the Motagua-Polochic-Jocotán (MPJ) system fault. Demographic scenarios revealed a contraction in distribution during the last interglacial, and expansion during the Last Glacial Maximum (LGM) with little change since the LGM. Divergence between groups separated by the Isthmus of Tehuantepec ~59,600 yr ago occurred in the presence of gene flow, suggesting that the Isthmus of Tehuantepec is a semipermeable barrier to gene flow. STRUCTURE analyses of microsatellite data detected 3 genetically differentiated groups. Several results fit a model of recent lineage divergence, including a significant signal of genetic differentiation, demographic expansion, decreased gene flow from past to present, and northward expansion during the LGM and contraction during the interglacial periods. We conclude that the genetic differentiation of E. fulgens in the Madrean Pine-Oak Woodlands resulted from recent geographical isolation of populations separated by natural barriers (IT and MPJ).
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Old Wednesday 5th August 2020, 10:53   #230
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A cryptic new species of hummingbird of the Campylopterus largipennis complex (Aves: Trochilidae)
LEONARDO ESTEVES LOPES, MARCELO FERREIRA DE VASCONCELOS, LUIZ PEDREIRA GONZAGA

Abstract

A new species of Campylopterus sabrewing is described from eastern Brazilian tropical dry forests occurring below 900 m asl. Its holotype (MZUSP 99024) is an adult female from Sítio Duboca (16°43’19’’S, 43°58’20’’W, elevation 840 m), municipality of Montes Claros, state of Minas Gerais. A taxonomic revision based on more than 1,000 museum specimens revealed that the new taxon, together with C. largipennis, C. diamantinensis and C. obscurus (with C. aequatorialis considered as a subjective junior synonym) should be ranked as species. We provide a key to permit easy identification of the four species. The new species is very similar to the parapatric C. diamantinensis of high altitude “campos rupestres” above 1,000 m asl, differing from it by its smaller size and longer light tail tips, as well as by sternum measurements. Given the several threats faced by the habitat to which the new species is endemic, we propose to consider it as Vulnerable under the IUCN criteria.

Keywords

cryptic biodiversity, Neotropical, Trochilidae, tropical dry forests, Aves

http://www.mapress.com/j/zt/article/...otaxa.4268.1.1


Campylopterus calcirupicola sp. nov
IOC Updates Diary Aug 4

Accept split of Diamantina Sabrewing Campylopterus diamantinensis from Grey-breasted Sabrewing C. largipennis.
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Old Tuesday 11th August 2020, 05:38   #231
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Elliotomyia

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The generic nomenclature of the Trochilini: a correction
F. GARY STILES, J. V. JR. REMSEN

Abstract

Because the generic name Elliotia proposed by us (Stiles et al. 2017a) was found to be preoccupied, we herein rename this genus, including a detailed diagnosis; the generic circumscription and type species remain unchanged. This change does not affect the generic reorganization of the Trochilini presented by Stiles et al. (2017a).

https://mapress.com/j/zt/article/view/zootaxa.4691.2.10
Proposal (877) to SACC

Recognize the genus Elliotomyia for chionogaster and viridicauda
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