Biological invasions by alien species represent a serious threat to biodiversity (Simberloff, 2000) and are a major concern worldwide. Vespa velutina, also known as Asian yellow-legged hornet, is an invasive Hymenoptera unintentionally imported into France before 2004 (Villemant et al., 2006; Arca et al. 2015) and first observed in 2005 (Haxaire et al., 2006). Since its accidental introduction, V. velutina has rapidly spread across neighbouring countries. Indeed, while in their native range they have to coexist with several species of Vespidae (Martin, 1995), in Europe, there is only one potential competitor belonging to the same predator guild: the native Vespa crabro. However, recent studies have shown that the Asian yellow-legged hornet clearly outperforms its European cousin in terms of activity, boldness and exploration (Monceau, Moreau, et al., 2015). Nevertheless, the two species share numerous biological and ecological traits including their life cycle and food sources