White-tailed Bumblebee

Bombus lucorum is a large bumblebee, the queen having a length of 18–22 mm (0.71–0.87 in) and a wingspan of around 36 mm (1.4 in). The workers are normally somewhat smaller. The species has a short proboscis (tongue). The predominating colour is black, with a pale yellow collar, another yellow band on the second tergite (abdominal segment), and a white tail. Both darker and paler forms exist. (Wikipedia)