Hope you found your way over here from Scienceblogs for the answer you’ve all been waiting for.
What was that sleek little black and yellow insect?
Commentator JasonC, in fine form, correctly guessed the colletid bee Hylaeus for all ten points. Here’s another view:
I’d also like to thank the commentariat for the excellent discussion about how these mysteries should be graded. Should guessers list their rationale for arriving at the answer, as GrrlScientist does for her mystery birds? I’ll have to mull that over.