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Frank E. Rheindt
Department of Biological Sciences, National University of Singapore

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INTEGRATIVE TAXONOMY REVEALS CRYPTIC ROBIN LINEAGE IN THE GREATER SUNDA ISLANDS Elize Y. X. Ng; Arya Y. Yue; James A. Eaton; Chyi Yin Gwee; Bas van Balen; Frank E. Rheindt
Treubia Vol. 47 No. 1 (2020): Vol. 47, No. 1, June 2020
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v47i1.3872

Abstract

Southeast Asian avifauna is under threat from both habitat loss and illegal poaching, yet the region’s rich biodiversity remains understudied. Here, we uncover cryptic species-level diversity in the Sunda Blue Robin (Myiomela diana), a songbird complex endemic to Javan (subspecies diana) and Sumatran (subspecies sumatrana) mountains. Taxonomic inquiry into these populations has previously been hampered by a lack of DNA material and the birds’ general scarcity, especially sumatrana which is only known from few localities. We demonstrate fundamental bioacoustic differences in courtship song paired with important distinctions in plumage saturation and tail length that combine to suggest species-level treatment for the two taxa. Treated separately, both taxa are independently threatened by illegal poaching and habitat loss, and demand conservation action. Our study highlights a case of underestimated avifaunal diversity that is in urgent need of revision in the face of imminent threats to species survival.
New records and range extensions of birds from Timor, Alor and Rote Hidayat Ashari; Dewi M. Prawiradilaga; James A. Eaton; Suparno Suparno; Frank E. Rheindt
Treubia Vol. 45 (2018): Vol. 45, December 2018
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v45i0.3628

Abstract

The Lesser Sundas Region continues to be widely unexplored even in such relatively well-known animal groups as birds (Aves). We report the results of an ornithological expedition from November through December 2015 to Timor, Alor and Rote islands along with some opportunistic observations made in that area between 2006 to 2015, providing details on numerous first records of bird species outside their previously known geographic or elevational ranges observed or otherwise recorded during this expedition. Our results underscore the fragmentary nature of our knowledge of the composition of the avifauna of the Lesser Sunda Islands, and demonstrate that there continues to be a large volume of significant new records and range extensions of birds on these islands.
Co-Authors Arya Y. Yue Bas van Balen Chyi Yin Gwee Dewi M. Prawiradilaga Elize Y. X. Ng Hidayat Ashari James A. Eaton James A. Eaton Suparno Suparno