Phylogenetic restitution and taxonomic revision of the New Caledonian endemic genus Thasycles Chapuis (Coleoptera: Chrysomelidae, Eumolpinae)
The fauna of Eumolpinae of New Caledonia has been under intense scrutiny in over the last decade and numerous species are being described on a regular basis. In this study, we revise in detail the group of Colaspis laboulbenei Montrouzier, 1861, currently in the genus Dematochroma Baly, 1864, using...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/260681 |
| Acceso en línea: | http://hdl.handle.net/10261/260681 |
| Access Level: | acceso abierto |
| Palabra clave: | Biodiversity hotspots Species distribution Eumolpini Island radiation New combinations New species http://metadata.un.org/sdg/15 Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss |
| Sumario: | The fauna of Eumolpinae of New Caledonia has been under intense scrutiny in over the last decade and numerous species are being described on a regular basis. In this study, we revise in detail the group of Colaspis laboulbenei Montrouzier, 1861, currently in the genus Dematochroma Baly, 1864, using a combined approach with DNA-based phylogenies and the study of morphology and species distributions. Several relevant systematic conclusions result from this revision: (1) recognition of the monophyletic group around Dematochroma laboulbenei; (2) recognition of an important morphological character, namely the presence or absence of a dorsal groove on pygidium, separating two narrowly parapatric lineages in this group; (3) reversal of a long-held synonymy with D. laboulbenei and reinstatement of Thasycles cordiformis Chapuis, 1874 stat. rev.; (4) restitution of Thasycles Chapuis, 1874 stat. rev. based on phylogenetic and taxonomic arguments to delimit this group of species; (5) transfer of Dematochroma fusca Jolivet, Verma & Mille, 2007, D. laboulbenei and Dematochroma panieensis Jolivet et al., 2007 to Thasycles; and (6) description of seven new species, including Thasycles castaneus Gómez-Zurita n. sp., Thasycles compactus Gómez-Zurita n. sp., Thasycles grandis Gómez-Zurita n. sp., Thasycles magnus Gómez-Zurita n. sp., Thasycles puncticollis Gómez-Zurita n. sp., Thasycles tenuis Gómez-Zurita n. sp., and Thasycles variegatus Gómez-Zurita n. sp. A species identification key and a brief discussion about the systematics and potential factors affecting the diversification and distribution of Thasycles are provided. |
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