Commom mallow (Malva sylvestris) is a favorite plant for the Red tailed bumblebee (Bombus lapidarius) [1]. Here a female is foraging for nectar.

References
1 Nederlands SoortenregisterCommom mallow (Malva sylvestris) is a favorite plant for the Red tailed bumblebee (Bombus lapidarius) [1]. Here a female is foraging for nectar.
References
1 Nederlands Soortenregister