Western honeybee; European honeybee
Refers specifically to Apis mellifera, the common honeybee species used in apiculture worldwide.
The Western honeybee is used in beekeeping all over the world.
蜜蜂 is the general term for honeybee, while 西洋蜜蜂 specifies the Western/European species.
日本蜜蜂 is the native Japanese honeybee (Apis cerana japonica), in contrast to the introduced Western honeybee.
Compound of 西洋 (Western) and 蜜蜂 (honeybee), a straightforward descriptive term for the European honeybee species.