Bombus muscorum or humilis ?

Bombus muscorum or humilis ?

Observation - Bombus muscorum or humilis ? - UK and Ireland. Description: I saw this bee on S E coast of Ireland ,B.muscorum is known on site and B. humilis is not known from Ireland .The muscorum specimens I usually find are darker than this one . Any thoughts anyone please !IRE

I saw this bee on S E coast of Ireland ,B.muscorum is known on site and B. humilis is not known from Ireland .The muscorum specimens I usually find are darker than this one . Any thoughts anyone please !IRE