RMJF2Y8F–Close up of yellow ox eye flower Buphthalmum salicifolium with forest cuckoo bumblebee, Scotland, UK

RM2A7FCKY–Forest Cuckoo Bumblebee,Bombus sylvestris

RM2CCTAPH–Forest cuckoo bumblebee, Bombus sylvestris, visiting Knapweed flower.

RMP89H4D–Forest Cuckoo Bumblebee (Bombus sylvestris) adult female photographed on a white background. Powys, Wales. May.

RM2BNMXKK–Male Forest Cuckoo Bumblebee (Bombus sylvestris) on Ivy (Hedera helix), Herefordshire, England.

RM2EX464P–Forest cuckoo bumblebee (Bombus sylvestris) Bumblebee parasite, on Yellowhead flower (Inula sp), Jardin des Plantes, Paris, France

Forest cuckoo bumblebee (Bombus sylvestris) male feeding on flowers (Brachyglottis). This species is parasitic in Early bumblebee nests. Monmouthshire, Wales, UK, June.

RMW7WXAF–Forest cuckoo bumblebee (Bombus sylvestris) male feeding on flowers (Brachyglottis). This species is parasitic in Early bumblebee nests. Monmouthshire, Wales, UK, June.

RM2J9YPX3–Closeup on a large Forest cuckoo bumblebee , Bombus sylvestris, sitting on a white brambleburry flower, Rubus fructicosus

Forest cuckoo bumblebee (Bombus sylvestris) male in flight towards flowers (Brachyglottis). This species is parasitic in Early bumblebee nests. Monmouthshire, Wales, UK, June.

RMW7WXAK–Forest cuckoo bumblebee (Bombus sylvestris) male in flight towards flowers (Brachyglottis). This species is parasitic in Early bumblebee nests. Monmouthshire, Wales, UK, June.

RME1GF9J–Forest or Four-coloured Cuckoo Bumblebee - Bombus sylvestris

RMKYRFGC–Forest Cuckoo Bumblebee, four coloured cuckoo bee (Bombus sylvestris) several animals on a thistle blossom

RF2H829KC–Bumblebee (possible Bombus sylvestris - Forest Cuckoo Bee) feeding on a white flower, Lake District, UK

RM2BNMXR6–Male Forest Cuckoo Bumbelbee (Bombus sylvestris), garden, Herefordshire, England.