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Data from: Transoceanic origin of microendemic and flightless New Caledonian weevils

Citation

Toussaint, Emmanuel F.A. et al. (2017), Data from: Transoceanic origin of microendemic and flightless New Caledonian weevils, Dryad, Dataset, https://doi.org/10.5061/dryad.vq31g

Abstract

The origin of the astonishing New Caledonian biota continues to fuel a heated debate among advocates of a Gondwanan relict scenario and defenders of late oceanic dispersal. Here, we study the origin of New Caledonian Trigonopterus flightless weevils using a multimarker molecular phylogeny. We infer two independent clades of species found in the archipelago. Our dating estimates suggest a Late Miocene origin of both clades long after the re-emergence of New Caledonia about 37 Ma. The estimation of ancestral ranges supports an ancestral origin of the genus in a combined region encompassing Australia and New Guinea with subsequent colonizations of New Caledonia out of New Guinea in the mid-Miocene. The two New Caledonian lineages have had very different evolutionary trajectories. Colonizers belonging to a clade of foliage dwellers greatly diversified, whereas species inhabiting leaf-litter have been less successful.

Usage Notes

Location

Melanesia
New Caledonia