Hi Russ,
I'm open for all comments and feedback. I have the same opinion that the black is really dark for a killerbee and after the first shed I'm also not really sure. I have no bumblebee in the clutch for comparation, I only saw a citrus bumblebee from another breeder and this one looks different. But I think it's possible that this guy has a normal bumblebee (no citrus). Because the difference seems to be the same as between pastel and citrus pastel within one clutch.
I will breed my citrus pastel to a spider next season and maybe I get the same result?! Latest when I breed this guy I will see what's up.
Thanks and best regards
Markus
P.S. Sorry for the late reply, I was on vacation.