Eggman, to get a killerbee, you need a pastel gene from the mother AND the father. Because, you need the baby to be a super pastel. You can't get a super pastel from a super pastel mother bred to a non-pastel father - that will only give you pastel babies - but, they will ALL be pastel... no normals.
Then you'll need the mother OR the father to have a spider gene as well for the baby to be a super pastel spider a.k.a. killerbee.