Re: non-honey bees and apples: Boyle-Makowski's papers see Proc. Ent. Soc.
Ontario 118: 125-141; Can. Ent. 17: 509-521; J. Hort. Sci. 58: 355-363.
 
Dear Ed: I'm now back from Asia, oil palms and coconuts. Cheers, Peter.