Bombus lucorum is a large bumblebee. It has a short head and, long and uneven pubescence. Typically, coloration is a bands. Black head, yellow necklace, black T1, yellow T2, black T3 and part of T4 . Rest of gaster is white.
Of the six sbspecies that exist in Europe, Bombus lucorum is represented in the iberian fauna by ssp. congruens ( Krúger, 1951)
Length of queens: 18-21 mm. Length slightly smaller in workers.