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Research Article

Phylogeny and systematics of the Sesamia coniota Hampson species group (Lepidoptera: Noctuidae: Noctuinae: Apameini: Sesamiina), with the description of three new species from the Afrotropical region

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Pages 417-435 | Accepted 17 Aug 2020, Published online: 23 Oct 2020
 

Summary

In this study, we review six morphologically similar species of Sesamia Guenée, 1852 from Africa, including three new species that are described: Sesamia corymbosus Le Ru n. sp., S. schoenoplectus Le Ru n. sp. and S. temberma Le Ru n. sp. These six species belong to a species complex that we hereby define as the Sesamia coniota group. Host plants of four species are recorded: Schoenoplectus corymbosus (Roth ex Roem. & Schult.) J. Raynal. for S. corymbosus and S. schoenoplectus, Echinochloa pyramidalis (Lam.) Hitschc. & Chase, Eriochloa meyeriana (Nees) Pilg., Schoenoplectus corymbosus and Typha latifolia L. for S. jansei, Tams & Bowden, 1953 and Pennisetum sp. for S. temberma. We also conduct molecular phylogenetic analyses on a multimarker (four mitochondrial and two nuclear genes) molecular dataset encompassing 36 specimens (including 32 specimens belonging to the S. coniota group). Molecular analyses allow assessing the phylogenetic relationships of five out of six species of the group.

Résumé

Phylogénie and systématique du groupe d’espèces Sesamia coniota (Lepidoptera : Noctuidae : Apameini : Sesamiina) avec la description de trois nouvelles espèces de la région afrotropicale. Dans cette étude, nous passons en revue six espèces du genre Sesamia Guenée, 1852 distribuées en Afrique. Trois nouvelles espèces sont décrites : Sesamia corymbosus Le Ru n. sp., S. schoenoplectus Le Ru n. sp. et S. temberma Le Ru n. sp. Ces six espèces appartiennent à un complexe d’espèces que nous définissons comme le groupe d’espèce Sesamia coniota. Les plantes-hôtes de quatre espèces sont répertoriées : Schoenoplectus corymbosus (Roth ex Roem. & Schult.) J. Raynal. pour S. corymbosus et S. schoenoplectus, Echinochloa pyramidalis (Lam.) Hitschc. & Chase, Eriochloa meyeriana (Nees) Pilg., Schoenoplectus corymbosus et Typha latifolia L. pour S. jansei Tams & Bowden, 1953, et Pennisetum sp. pour S. temberma. Nous avons également réalisé des analyses de reconstruction phylogénétique sur un jeu de données moléculaires multimarqueurs (quatre gènes mitochondriaux et deux gènes nucléaires) comprenant 36 spécimens (dont 32 appartiennent au groupe d’espèce S. coniota). Les analyses moléculaires permettent d’inférer les relations phylogénétiques de cinq des six espèces du groupe.http://www.zoobank.org/urn:lsid:zoobank.org:pub:1B70994A-31E2-40B8-BE4F-E64A7A23627Chttp://www.zoobank.org/urn:lsid:zoobank.org:act:1F1F13A1-B3E2-4C96-BD5D-5616E66AB84Fhttp://www.zoobank.org/urn:lsid:zoobank.org:act:C346CC14-663D-4CD3-BC7F-2C304C8A523Ahttp://www.zoobank.org/urn:lsid:zoobank.org:act:AB5B9C4F-3E52-43F1-A677-51258E1021EB

Acknowledgements

We want to thank the Editor in Chief A. Mantilleri, and two anonymous reviewers for their comments and suggestions on a previous version of the manuscript. We thank the curators of MCSN (F. Rigato), MNHN (J. Minet & J. Barbut), NHM (A. Zilli) and TMSA (M. Krüger) for the permission to study and photograph the types and additional material. Laboratory facilities were provided by icipe, African Insect Science for Food and Health (Kenya), the UMR CBGP (Centre de Biologie pour la Gestion des Populations) in Montferrier/Lez (France) and the UMR EGCE (formerly laboratory Evolution Génomes Spéciation) in Gif/Yvette (France). All specimens were collected under appropriate collection permits from the countries recorded and no conflicts of interest were discovered.

Supplementary material

Supplemental data for this article can be accessed here.

Additional information

Funding

This work was supported by the IRD, by the project IMPACT_PHYTO funded by the Division for Plant Health and Environment (SPE) of INRAE, by icipe – African Insect Science for Food and Health (Kenya) – and by the program “Bibliothèque du Vivant” (“Library of Life”) (Project Noctuid Stem Borer Biodiversity; NSBB) supported by a joint CNRS, INRAE and MNHN consortium.

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