Chorology, flight curves and diel activity of oak-living clear-wing moths in Extremadura, SW Spain (Lepidoptera: Sesiidae)
Aim of study: To acquire data on the chorology, phenology and diel activity of oak-living clear-wing moths, given the increased phytosanitary impact of some species. Area of study: The region of Extremadura (SW Spain), with more than 1.2 million hectares of oak forests. Material and methods:...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Consejo Superior de Investigaciones Científicas (CSIC)
2025-06-01
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| Series: | Forest Systems |
| Subjects: | |
| Online Access: | https://fs.revistas.csic.es/index.php/fs/article/view/20915 |
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| Summary: | Aim of study: To acquire data on the chorology, phenology and diel activity of oak-living clear-wing moths, given the increased phytosanitary impact of some species.
Area of study: The region of Extremadura (SW Spain), with more than 1.2 million hectares of oak forests.
Material and methods: Trapping using sex pheromones was conducted over four years (2020-2023) throughout Extremadura (42 site by year combinations) in holm, cork and Pyrenean oak woodlands. The main target species were monitored (April-November) with delta traps to construct flight curves and with automated traps to assess diel activity.
Main results: Abundance-occupancy values revealed that the main species were Synanthedon conopiformis and Synanthedon vespiformis, followed by Paranthrene insolita and Synanthedon codeti. These clear-wing moths were well distributed and occurred in all three oak habitats over a wide altitudinal range. Adult phenology was species-specific: P. insolita and S. conopiformis mostly occurred in spring, S. codeti in summer, while S. vespiformis exhibited a marked bimodal flight pattern with peaks in May and September- October. Adults of S. vespiformis were larger in spring than in summer/autumn, which is discussed from an ecological-evolutionary perspective. Diel activity differed between species; the earliest was P. insolita (15:00-18:00 h), then S. vespiformis (17:00-19:00 h), and finally S. conopiformis (19:00-21:00 h). Two target species (Synanthedon stomoxiformis and Synanthedon spuleri) were never recorded, while some non-target ones were captured.
Research highlights: This research contributes to the understanding of the life-history and behaviour of oak-living clear-wing moths in SW Spain. Data will be useful for managing these oak woodborers in dehesa forests.
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| ISSN: | 2171-5068 2171-9845 |