Monday, July 31, 2017

[Ornithology • 2017] Pyrrhula crassa • A New Extinct Species of Large Bullfinch (Aves: Fringillidae: Pyrrhula) from Graciosa Island (Azores, North Atlantic Ocean)


 [upper] Pyrrhula crassa  Rando, Pieper, Olson, Pereira & Alcover, 2017 
[lower] P. pyrrhula & P. murina. 


 possible aspect in life illustration: Pau Oliver. 

Abstract

A new species of extinct bullfinch, Pyrrhula crassa n. sp., is described from bones found in Furna do Calcinhas, a small cave situated at Caldeira, a volcano located in the southeastern portion of the Graciosa Island (Azores archipelago, North Atlantic Ocean). It is the first extinct passerine bird to be described from this archipelago. Both skull and post-cranial bones are larger in the new species than in its relatives, the Eurasian Bullfinch (P. pyrrhula) and the Azores Bullfinch or “Priolo” from São Miguel Island (P. murina), the new species being the largest known in this genus. The morphology of its humerus and the estimated wing length and surface area seem to indicate a flying ability similar to that of the extant P. murina. The possible sources of colonization of the genus into Azores, causes and chronology of extinction of the new species are discussed

Keywords: Aves, Fringillidae, Pyrrhula



FIGURE 5. A: Skull and mandible, lateral view. From top to bottom: Pyrrhula pyrrhula, LARC 2328; P. murina, SPEA 120; Pyrrhula crassa n. sp., based on premaxilla MCMa 2006.016 and mandible MCMa 2002.016. The missing parts have been added using the equivalent parts of P. murina. Scale = 1 cm.
B: From top to bottom: aspect of extant P. pyrrhulaP. murina; and possible aspect in life of Pyrrhula crassa n. sp. (colours are speculative). Art by Pau Oliver.

Systematic paleontology
Order Passeriformes Linnaeus, 1758
Family Fringillidae (Vigors, 1825)
Subfamily Carduelinae Vigors, 1825

Tribe Pyrrhulini
Genus Pyrrhula Brisson, 1760


Pyrrhula crassa n. sp.

 Etymology. From Latin, crassa, thick, referring to the large size of the species and particularly to its notably heavy bill. 
Vernacular names proposed: Greater Azores Bullfinch (English) – Priolo maior dos Açores (Portuguese).





 J. C. Rando, H. Pieper, Storrs L. Olson, F. Pereira and J. A. Alcover. 2017. A New Extinct Species of Large Bullfinch (Aves: Fringillidae: Pyrrhula) from Graciosa Island (Azores, North Atlantic Ocean). Zootaxa. 4282(3); 567–583.  DOI: 10.11646/zootaxa.4282.3.9

Resumo Uma nova espécie extinta de Pyrrhula, P. crassa n. sp., é descrita a partir de ossos encontrados em a Furna do Calcinhas, uma pequena caverna situada na Caldeira, vulcão localizado no sudoeste da ilha Graciosa (Arquipélago dos Açores, Atlântico Norte). É a primeira ave Passeriforme extinta descrita neste arquipélago. Tanto o crânio e os ossos do seu esqueleto pós-craniano são maiores que os dos seus parentes, o dom-fafe Pyrrhula pyrrhula e o priolo Pyrrhula murina. A nova espécie é a maior do gênero. A morfologia do úmero e o tamanho estimado das suas asas indica uma capacidade para o voo semelhante a o priolo. As possíveis fontes de colonização dos Açores por Pyrrhula e as causas e cronologia da extin- ção da espécie nova são discutidas.



A new bird which humans drove to extinction discovered in Azores
phy.so/420358270   @physorg_com
New species of Pyrrhula described for Graciosa Island
gba.uac.pt/media/press&events/ver.php?id=661

1 comment:

  1. Your blog is very nice, will u want to contribute your knowledge in our weekly newspaper? Here is the link, www.wildlifenecology2012.blogspot.com

    ReplyDelete