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Abstract Sulawesi is the largest, most topographically complex island in the Wallacean biogeographic zone, and it has a rich fauna of endemic small mammals, dominated by rodents of the family Muridae. Among murids, the Bunomys division is the most species‐rich radiation on Sulawesi. In total, the division contains 11 genera and 32 species, five and 20 of which are endemic to Sulawesi. We combined a five‐locus phylogeny and linear cranial morphology to better understand the taxonomy and local scales of endemism within the Bunomys division on Sulawesi. Phylogenetic analyses of mitochondrial and nuclear DNA placedB. fratrorumamong other genera and inferredParuromysas sister to the type species ofTaeromys(T. celebensis). We resolve these issues by resurrectingFrateromys, a genus under whichB. fratrorumwas once placed, and returningParuromys dominatortoTaeromys. Within three species,F. fratrorum, T. callitrichus,andT. taerae, we recovered Pleistocene age divergences between populations sampled across the northern peninsula of Sulawesi; divergence between western and eastern populations ofF. fratrorummay reflect the existence of two species.
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Phylogeny and classification of Nesobasis Selys, 1891 and Vanuatubasis Ober & Staniczek, 2009 (Odonata: Coenagrionidae)
Abstract Island archipelagos in the South Pacific have relatively high species endemism within the insect order Odonata, specifically damselflies. Nesobasis Selys, 1891, an endemic damselfly genus from Fiji, includes over 20 species, but a clear understanding of its evolutionary relationship to other damselflies in the region is lacking. Scientists have questioned the monophyly of Nesobasis due to variations within the genus leading to the establishment of three divisions provisionally named as: comosa-, erythrops- and longistyla- groups. However, Nesobasis has shown to be monophyletic in previous phylogenetic analyses. Using additional species in this study, we investigate the phylogenetic relationships between Nesobasis and other damselflies from the region, specifically the endemic Vanuatubasis Ober & Staniczek, 2009 from the neighboring island archipelagos of Vanuatu. The relationship between these taxa has not yet been examined with molecular data. Five genes were used in a maximum likelihood phylogenetic reconstruction and examined morphological data to determine the relationship between these genera. Our results recover three distinct clades overall with Vanuatubasis nested within Nesobasis (i.e., non-monophyletic). Vanuatubasis is sister to the longistyla and erythrops groups. The third group, comosa, was found sister to the clade of Vanuatubasis ( longistyla + erythrops ). As a result of these findings, we propose the new genus, Nikoulabasis gen. nov.
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- Award ID(s):
- 2002432
- PAR ID:
- 10437925
- Date Published:
- Journal Name:
- Insect Systematics & Evolution
- ISSN:
- 1399-560X
- Page Range / eLocation ID:
- 1 to 18
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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Accepted Manuscript1.0
- Journal Article:
- https://doi.org/10.1163/1876312X-bja10049
