Prix Adolphe Crèvecoeur Prijs – 2022

Deux prix ont été attribués | Er werden twee prijzen uitgereikt

1. An annotated checklist of Belgian Therevidae (Diptera: Asiloidea). Jonas Mortelmans & Elias de Bree - Bulletin 158 T2: 133-150.

Abstract

A revision of Therevidae in two Belgian entomological collections showed the current catalogue was in dire need of an update. This paper gives an overview of the material in both the collections of RBINS and FuSagx, and of four private collections. Three species should be omitted from the catalogue as no recent material was found in collections:Thereva aurata Loew, 1854, Thereva circumscripta Loew, 1847 and Thereva cincta Meigen, 1820. For Thereva fulva (Meigen, 1820) we could not confirm any previous identification, although we did find one unidentified specimen belonging to this species and therefore the species can remain on the catalogue. Four species, Pandivirilia caesia (Meigen, 1838), Pandivirilia melaleuca (Loew, 1847), Thereva inornata Verrall, 1909 and Thereva microcephala Loew, 1847 are reported new to the Belgian fauna.

2. Inventaire et conservation des abeilles sauvages (Hymenoptera : Anthophila) du sillon industriel hainuyer (Belgique). William Fiordaliso, Sara Reverté, Thomas Wood, Yvan Barbier, Pierre Rasmont, Alexandre Lefèbvre, Martin Loockx, Alexandre Reese, Eulalie Ruelle, Denis Michez - BJE 2022 vol.132

Abstract

The industrial backbone of the Belgian province of Hainaut is well known for its high level of anthropization. The objectives of this study were to conduct an inventory of wild bee species living in these artificial landscapes and to locate biodiversity hotspots among different types of environments such as parks, quarries, brownfields, meadows, and spoil heaps. Ultimately, these results should facilitate the development of conservation policies. Three years of sampling at 112 sites are summarised in this article. A total of 9410 specimens were captured and 180 beespecies were found, about 45% of the national diversity. Among them, 24 species are threatened at the Belgian level and one species, Lasioglossum politum, was considered extinct in Belgium. Its resurgence could be linked to rising temperatures. Furthermore, our results emphasize the fact that thermophilic anthropogenic habitats such as spoil heaps and quarries are important for many endangered species that are confined to specific nesting substrates. On the other hand, while parks had a diverse assemblage of wild bees, few were nationally threatened. As a result, we call on public policies to refocus their strategy away from urban parks and to allocate more resources to spoil heaps and quarries conservation.