Bombus pratorum is a species with three European species. In the Iberian Península there is just one, Bombus pratorum ssp. santonae (Tkalcu, 1985).
It is a small size species.
Females: 15-18 mm.
Males: 11-13 mm.
Black head and thorax. The thorax has the collar and the scutellum yellow. Yellow T1 and T2. Black T3 and T4' sides. Yellowish red gaster. Black or brown legs. Long hairs.