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Contribution à la connaissance des lépidoptères et coléoptères crépusculaires et nocturnes de l'île de Port-Cros (archipel des Îles d'Hyères, Var, France)

Abstract : Contribution to the knowledge of crepuscular and nocturnal Lepidoptera and Coleoptera on Port-Cros Island (Hyères Archipelago, Var, France). The aim of this work is to improve the knowledge on poorly known taxonomic groups within the Port-Cros National Park. Crepuscular and nocturnal Lepidoptera and Coleoptera were studied on Port-Cros island using UV light traps established on three sampling points (Éminence fort, Manoir grassland and Vigie fort), representative of the main types of environment, during four sessions distributed throughout the year 2019. Fourteen species of Coleoptera and 76 species of Lepidoptera were observed. The overall species diversity in the three sampling points during the four sessions is unequal. Vigie fort is the point with maximal diversity (72 species). For both Lepidoptera and Coleoptera, the October session is the richest in species number, whereas the May session is the poorer, for two out of three sampling points. Coleopteran species numbers are very low and do not correspond to the potential community of crepuscular and noctural Coleoptera on this island, especially by comparison with previous studies in the neighbouring island of Porquerolles. This situation is probably related to the abnormally low precipitations during summer 2019. Most of the Coleoptera are widespread in the region, but some of them are new for Port-Cros island. Most Lepidoptera species are restricted to the South of France and/or are migratory. Port-Cros island is both a stage for migratory moths and a site favourable to the establisment of sedentary moths.
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https://hal-amu.archives-ouvertes.fr/hal-03437876
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Submitted on : Saturday, November 20, 2021 - 6:55:31 PM
Last modification on : Wednesday, November 24, 2021 - 3:02:48 AM

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  • HAL Id : hal-03437876, version 1

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Philippe Ponel, Marion Fouchard, Jean-Pierre Hébrard. Contribution à la connaissance des lépidoptères et coléoptères crépusculaires et nocturnes de l'île de Port-Cros (archipel des Îles d'Hyères, Var, France). Scientific Reports of the Port-Cros National Park, Parc National de Port-Cros, 2021, 35, pp.383-410. ⟨hal-03437876⟩

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