Old Lineage on an Old Island : Pixibinthus, a New Cricket Genus Endemic to New Caledonia Shed Light on Gryllid Diversification in a Hotspot of Biodiversity Jeremy Anso, Laure Barrabé, Laure Desutter-Grandcolas, Hervé Jourdan, Philippe Grandcolas, Jiajia Dong, Tony Robillard

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Jeremy Anso, Laure Barrabé, Laure Desutter-Grandcolas, Hervé Jourdan, Philippe Grandcolas, et al.. Old Lineage on an Old Island : Pixibinthus, a New Cricket Genus Endemic to New Caledonia Shed Light on Gryllid Diversification in a Hotspot of Biodiversity. PLoS ONE, Public Library of Science, 2016, 11 (3), pp.e0150920. ￿10.1371/journal.pone.0150920￿. ￿hal-02096383￿

HAL Id: hal-02096383 https://hal.umontpellier.fr/hal-02096383 Submitted on 11 Apr 2019

HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. RESEARCH ARTICLE Old Lineage on an Old Island: Pixibinthus,a New Cricket Genus Endemic to New Caledonia Shed Light on Gryllid Diversification in a Hotspot of Biodiversity

Jérémy Anso1,2*, Laure Barrabé3, Laure Desutter-Grandcolas1, Hervé Jourdan2, Philippe Grandcolas1, Jiajia Dong1, Tony Robillard1

1 Muséum national d'Histoire naturelle, Institut de Systématique, Évolution, Biodiversité, ISYEB - UMR 7205 – CNRS, MNHN, UPMC, EPHE, Sorbonne Universités, Paris, France, 2 Institut Méditerranéen de Biodiversité et d’Écologie marine et continentale (IMBE), Aix Marseille Université, CNRS, IRD, Avignon Université UMR IRD 237 IMBE, Centre IRD Nouméa, Nouvelle-Calédonie, 3 Laboratoire de Botanique et d’Ecologie Végétales Appliquées, Herbarium NOU, UMR 123: botAnique et Modélisation de l’Architecture des Plantes et des vegetations (AMAP), Centre IRD Nouméa, Nouvelle-Calédonie

* [email protected] OPEN ACCESS

Citation: Anso J, Barrabé L, Desutter-Grandcolas L, Jourdan H, Grandcolas P, Dong J, et al. (2016) Old Abstract Lineage on an Old Island: Pixibinthus, a New Cricket Genus Endemic to New Caledonia Shed Light on Few studies have focused on the early colonization of New Caledonia by , after the Gryllid Diversification in a Hotspot of Biodiversity. re-emergence of the main island, 37 Myr ago. Here we investigate the mode and tempo of PLoS ONE 11(3): e0150920. doi:10.1371/journal. evolution of a new endemic cricket genus, Pixibinthus, recently discovered in southern New pone.0150920 Caledonia. First we formally describe this new monotypic genus found exclusively in the Editor: Diego Fontaneto, Consiglio Nazionale delle open shrubby vegetation on metalliferous soils, named ‘maquis minier’, unique to New Cal- Ricerche (CNR), ITALY edonia. We then reconstruct a dated molecular phylogeny based on five mitochondrial and Received: November 12, 2015 four nuclear loci in order to establish relationships of Pixibinthus within Eneopterinae crick- Accepted: February 22, 2016 ets. Pixibinthus is recovered as thesister clade of the endemic genus Agnotecous, mostly

Published: March 30, 2016 rainforest-dwellers. Dating results show that the island colonization by their common ances- tor occurred around 34.7 Myr, shortly after New Caledonia re-emergence. Pixibinthus and Copyright: © 2016 Anso et al. This is an open access article distributed under the terms of the Agnotecous are then one of the oldest lineages documented so far for New Caledo- Creative Commons Attribution License, which permits nia. This discovery highlights for the first time two clear-cut ecological s