Bombus bohemicus?

Bombus bohemicus?

Observation - Bombus bohemicus?. Description: I know its going to be tricky from this single photo but am wondering if anyone is able to give an ID. Definitely a female cuckoo (very large) but undecided between vestalis and bohemicus. The yellow band at top of tail didn't seem extensive enough for ve

I know its going to be tricky from this single photo but am wondering if anyone is able to give an ID. Definitely a female cuckoo (very large) but undecided between vestalis and bohemicus. The yellow band at top of tail didn't seem extensive enough for vestalis but failed to get any more pics beofre she flew off like a Lancaster bomber!